1
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Nguyen TMH, Nguyen TTO, Le NT, Spyridovich EV, Nguyen VH, Chau VM. Preliminary Observation on the Fibrinolytic Activity of Dimocarpus longan Seed. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03519-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Phi Thi D, Doan Thi Mai H, Cao DD, Vu Thi Q, Nguyen MA, Le Thi HM, Tran DT, Chau VM, Pham VC. Novel 1,3-Benzodioxole From Marine-Derived Actinomycete in East Vietnam Sea. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20920042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Analysis of an antimicrobial extract from the culture broth of the marine-derived actinomycete Streptomyces sp. G261 led to the isolation of a new 1,3-benzodioxole derivative (1), together with 10 known compounds 2-11. The actinomycete strain G261 was isolated from sediment, collected at Cu Lao Cham, Quang Nam in Vietnam. The taxonomic identification of the strain G261 was achieved by analysis of 16SrRNA gene sequences. On the basis of morphological and phylogenetic evidence, the actinomycete strain G261 was assigned to the genus Streptomyces. The structures of the isolated compounds were established by their spectral data analysis, including mass spectrometry, 1-dimensional nuclear magnetic resonance (1D-NMR), and 2D-NMR. The structure of 1 was confirmed by comparison of the calculated with experimental13C NMR data. Compound 1 exhibited antimicrobial activity against Enterococcus faecalis and Staphylococcus aureus with minimum inhibitory concentration values of 128 and 256 µg/mL, respectively. Whereas, compound 1 had a weak inhibition when tested against 4 cancer cell lines, KB, LU-1, HepG-2, and MCF-7.
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Affiliation(s)
- Dao Phi Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Department of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Duc Danh Cao
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Department of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Quyen Vu Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Mai Anh Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Hong Minh Le Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Dang Thach Tran
- Depatment of Applied Science and Technology, University Industry Vinh, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Department of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
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3
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Doan TMH, Nguyen TL, Trinh TTV, Vu VN, Phi TD, Litaudon M, Roussi F, Chau VM, Pham VC. Cytotoxic Phenolic Compounds from Fruit Glandular Trichomes of Macaranga tanarius. J Anal Methods Chem 2019; 2019:2917032. [PMID: 31737404 PMCID: PMC6815561 DOI: 10.1155/2019/2917032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/07/2019] [Accepted: 09/12/2019] [Indexed: 06/10/2023]
Abstract
A new flavonoid, macatanarin D (1), together with five known stilbenes (2-6), was isolated from fruit glandular trichomes of Macaranga tanarius. Their structures were elucidated on the basis of spectroscopic methods and through comparison with data reported in the literature. All isolated compounds were evaluated for their cytotoxic activities against KB and MCF-7 cell lines. Compounds 3, 4, and 5 showed the strongest activities against both cell lines with IC50 values in the range of 0.03-0.12 μM, and compound 2 only showed a significant cytotoxicity against KB cell line (IC50 = 0.26 μM) and a moderate cytotoxicity against MCF-7 (IC50 = 10.4 μM). Compounds 1 and 6 showed weak cytotoxic activities against KB cell line with IC50 values of 29.3 and 24.7 μM, respectively.
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Affiliation(s)
- Thi Mai Huong Doan
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Thuy Linh Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Thi Thanh Van Trinh
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Nam Vu
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Thi Dao Phi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR2301, University of Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Fanny Roussi
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR2301, University of Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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4
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Le TNV, Truong BN, Le TP, Litaudon M, Tran DT, Chau VM, Mai HDT, Pham VC. Cytotoxic phenolic compounds isolated from the fruits of Macaranga denticulata. Nat Prod Res 2019; 35:1861-1868. [PMID: 31293177 DOI: 10.1080/14786419.2019.1639175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A new modified geranylated flavonoid, 3'-dehydroxy-solophenol C (1), along with 17 known compounds (2-18) were isolated from the fruits of Macaranga denticulata. Their structures were established by spectral analysis, such as mass spectrometry, 1D-NMR and 2D-NMR. The new geranylated flavonoid 1 showed a moderate cytotoxic activity against the A549 cell line with IC50 value of 16.0 µM. Compound 9 showed the highest cytotoxic activities against KB, HepG2, Lu-1 and MCF7 cell lines with IC50 values of 0.6, 0.8, 1.3 and 1.2 µM, respectively.
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Affiliation(s)
- Tran Nguyen Vu Le
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST, Caugiay, Hanoi, Vietnam
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST, Caugiay, Hanoi, Vietnam
| | - Thi Phuong Le
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Dang Thach Tran
- Institute of Applied Science and Technology, University Industry Vinh, Vinh, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST, Caugiay, Hanoi, Vietnam
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5
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Do TQ, Truong BN, Mai HDT, Nguyen TL, Nguyen VH, Nguyen HD, Nguyen TD, Nguyen TC, Luong TV, Giang LT, Chau VM, Pham VC. New dianthramide and cinnamic ester glucosides from the roots of Aconitum carmichaelii. J Asian Nat Prod Res 2019; 21:507-515. [PMID: 29597834 DOI: 10.1080/10286020.2018.1454436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
Four new compounds N-salicyl-3-hydroxyanthranilic acid methyl ester (1), N-(2'-dehydroxysalicyl)-3-hydroxyanthranilic acid methyl ester (2), methyl-4-β-D-allopyranosyl-ferulate (3), and methyl-4-β-D-gulopyranosyl-cinnamate (4), along with six known compounds (5-10), were isolated from the roots of Aconitum carmichelii Debx. Their structures were elucidated on the basis of spectral data analysis, including 1D, 2D-NMR, and HR-ESI-MS. Compounds 1 and 2 showed the inhibition of nitric oxide (NO) production with IC50 values of 9.13 and 19.94 μM, respectively.
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Affiliation(s)
- Thi Quynh Do
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Bich Ngan Truong
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Huong Doan Thi Mai
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Thuy Linh Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Van Hung Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Hai Dang Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Tien Dat Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
- b Center for Research and Technology Transfer , VAST , Hanoi 100000 , Vietnam
| | - The Cuong Nguyen
- c Institute of Ecology and Biological Resources , VAST , Hanoi 100000 , Vietnam
| | - Trieu Vung Luong
- d Department of Agriculture and Rural Development of Ha Giang , Ha Giang 310000 , Vietnam
| | - Loc Thang Giang
- e Pho Bang Centre for Plant and Animal Varieties , Ha Giang 310000 , Vietnam
| | - Van Minh Chau
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Van Cuong Pham
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
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6
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Nguyen THV, Tran TT, Cam TI, Pham MQ, Pham QL, Vu DH, Nguyen XN, Chau VM, Van KP. Alkaloids From Zanthoxylum nitidum and Their Cytotoxic Activity. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19844133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Zanthoxylum nitidum (Roxb.) DC (Rutaceae) is a traditional medicine used for the treatment of various diseases like toothache, gingivitis, fever, colic vomiting, diarrhea, and cholera. Three new alkaloids, zanthocadinanine C (1), 7-methoxy-8-demethoxynitidine (2), and zanthonitiside I (3) were isolated from the stems and twigs of Z. nitidum. Their structures were determined on the basis of extensive spectroscopic, including 1-dimensional and 2-dimensional nuclear magnetic resonance and mass spectroscopy data. Compounds 1–3 were evaluated for cytotoxic activity against 5 human cancer cell lines, KB, MCF-7, LNCaP, HepG-2, and LU-1. Compound 2 showed significant cytotoxic activity against all tested human cancer cell lines with IC50 values ranging from 10.3 to 12.6 µM.
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Affiliation(s)
- Thi Hong Van Nguyen
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Thi Tuyen Tran
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Thi Inh Cam
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Minh Quan Pham
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Quoc Long Pham
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Dinh Hoang Vu
- Hanoi University of Science and Technology, Hai Ba Trung, Hanoi, Vietnam
| | | | - Van Minh Chau
- Institute of Marine Biochemistry, VAST, Cau Giay, Hanoi, Vietnam
| | - Kiem Phan Van
- Institute of Marine Biochemistry, VAST, Cau Giay, Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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7
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Mai HDT, Toan TP, Huu GT, Le TN, Oanh VTK, Hang NTM, Thu HT, Chau VM, Litaudon M, Pham VC. New flavonoid and stilbene derivatives from the fruits of Macaranga balansae. Nat Prod Res 2019; 34:2772-2778. [DOI: 10.1080/14786419.2019.1587425] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
- Graduate University of Science and Technology, VAST , Caugiay , Hanoi, Vietnam
| | - Thang Pham Toan
- School of Chemical Engineering, Hanoi University of Science and Technology , Ha Ba Trung , Hanoi, Vietnam
- Institute of Forensic Sciences, Ministry of Public Security , Thanh Xuan , Hanoi, Vietnam
| | - Giap Tran Huu
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
| | - Thanh Nguyen Le
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
- Graduate University of Science and Technology, VAST , Caugiay , Hanoi, Vietnam
| | - Vu Thi Kim Oanh
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
| | - Nguyen Thi Minh Hang
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
| | - Huong Tran Thu
- School of Chemical Engineering, Hanoi University of Science and Technology , Ha Ba Trung , Hanoi, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Caugiay , Hanoi, Vietnam
- Graduate University of Science and Technology, VAST , Caugiay , Hanoi, Vietnam
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8
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Doan Thi Thuy A, Trinh Thi Thanh V, Doan Thi Mai H, Le HT, Litaudon M, Nguyen VH, Chau VM, Pham VC. Cytotoxic Alkaloids from Leaves of Pilea aff. martinii. Planta Med 2019; 85:496-502. [PMID: 30791057 DOI: 10.1055/a-0826-0483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two new phenanthroquinolizidine alkaloids (1: and 2: ) and a new piperidine derivative (3: ) were isolated from the leaves of Pilea aff. martinii together with 3 known alkaloids: julandine (4: ), cryptopleurine (5: ), and 1,3,6,6-tetramethyl-5,6,7,8-tetrahydro-isoquinolin-8-one (6: ). Their structures were determined by spectral data analyses including mass spectrometry and 2-dimensional nuclear magnetic resonance data. The absolute configurations of 1: -3: were established by comparison of their experimental circular dichroism data with the calculated electronic circular dichroism spectra. The isolated compounds were evaluated for their cytotoxicity against 4 cancer cell lines: KB (mouth epidermal carcinoma cells), HepG-2 (human liver hepatocellular carcinoma cells), LU-1 (human lung adenocarcinoma cells), and MCF-7 (human breast cancer cells). The new phenanthroquinolizidine pileamartine D (2: ) showed strong and selective proliferation inhibition toward KB and HepG-2 cells with IC50 values of 25 and 27 nM, respectively. Pileamartine C (1: ), julandine (4: ), and cryptopleurine (5: ) exhibited cytotoxicity against 4 tested cancer cell lines with IC50 values less than 1 µM.
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Affiliation(s)
- Ai Doan Thi Thuy
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- National University of Agriculture, Trau Quy, Hanoi, Vietnam
| | - Van Trinh Thi Thanh
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Huyen Tram Le
- Hanoi University of Science and Technology (HUST), Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Sud, Paris, France
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
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9
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Cao DD, Do TQ, Doan Thi Mai H, Vu Thi Q, Nguyen MA, Le Thi HM, Tran DT, Chau VM, Cong Thung D, Pham VC. Antimicrobial lavandulylated flavonoids from a sponge-derived actinomycete. Nat Prod Res 2018; 34:413-420. [DOI: 10.1080/14786419.2018.1538219] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Duc Danh Cao
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Faculty of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Thi Quynh Do
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Faculty of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Faculty of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Quyen Vu Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Mai Anh Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Hong Minh Le Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Dang Thach Tran
- Institute of Applied Science and Technology, University Industry Vinh, Vinh, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Do Cong Thung
- Institute of Marine Environment and Resources, VAST, Haiphong, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Faculty of Chemistry, Graduate University of Science and Technology, VAST, Hanoi, Vietnam
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10
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Trinh TTV, Truong BN, Longeon A, Doan TMH, Deville A, Chau VM, Pham VC, Bourguet-Kondracki ML. New 9α-Hydroxy-5α,6α-epoxyhydroxysterols from the Vietnamese Marine Sponge Ircinia echinata. Mar Drugs 2018; 16:md16110424. [PMID: 30388820 PMCID: PMC6267468 DOI: 10.3390/md16110424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 10/19/2018] [Accepted: 10/23/2018] [Indexed: 11/16/2022] Open
Abstract
Chemical investigation of the methanol extract of the Vietnamese marine sponge Ircinia echinata led to the isolation of six new 9α-hydroxy-5α,6α-epoxysterols: 5α,6α-epoxycholesta-7,22(E)-dien-3β,9α-diol (1), 5α,6α-epoxycholesta-7,24(28)-dien-3β,9α-diol (2), (24R)-5α,6α-epoxy-24-ethyl-cholesta-7-en-3β,9α-diol (3), 5α,6α-epoxycholesta-7-en-3β,9α-diol (4), (24S)-5α,6α-epoxyergosta-7,22-dien-3β,9α-diol (5), and (24R)-5α,6α-epoxy-24-methyl-cholesta-7-en-3β,9α-diol (6) along with the known 5α-6α-epoxysterols: 5α,6α-epoxystigmasta-7-en-3β-ol (7), 5α,6α-epoxystigmasta-7,22-dien-3β-ol (8), and 5α,6α-epoxyergosta-7-en-3β-ol (9). Their structures and their configurations were established on the basis of high resolution mass spectra and extensive 1D and 2D NMR spectroscopic data and by comparison with the literature. Their cytotoxic activity, evaluated against three human cancer cell lines, MCF-7, Hep-G2 and LU-1, revealed that only compounds 3 and 4 exhibited significant antiproliferative activity and compound 3 showed a selective inhibition towards the MCF-7 human breast cancer cells.
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Affiliation(s)
- Thi Thanh Van Trinh
- Advanced Center for Bioorganic Chemistry of the Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay 8424, Hanoi, Vietnam.
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry of the Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay 8424, Hanoi, Vietnam.
| | - Arlette Longeon
- Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle, 57 rue Cuvier (CP54), 75005 Paris, France.
| | - Thi Mai Huong Doan
- Advanced Center for Bioorganic Chemistry of the Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay 8424, Hanoi, Vietnam.
| | - Alexandre Deville
- Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle, 57 rue Cuvier (CP54), 75005 Paris, France.
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry of the Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay 8424, Hanoi, Vietnam.
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry of the Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay 8424, Hanoi, Vietnam.
| | - Marie-Lise Bourguet-Kondracki
- Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle, 57 rue Cuvier (CP54), 75005 Paris, France.
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11
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Cao DT, Tran VH, Vu VN, Mai HDT, Le THM, Vu TQ, Nguyen HH, Chau VM, Pham VC. Antimicrobial metabolites from a marine-derived Actinomycete Streptomyces sp. G278. Nat Prod Res 2018; 33:3223-3230. [PMID: 29726708 DOI: 10.1080/14786419.2018.1468331] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Analysis of an antimicrobial extract prepared from culture broth of the marine-derived actinomycete Streptomyces sp. G278 led to the isolation of ten compounds, 1-10. Two compounds, 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene (1), and 3-hydroxyl-2-methylpyridine (2) were isolated from a natural source for the first time. The structures of the isolated compounds were established by their spectral data analysis, including mass spectrometry, 1D-NMR, 2D-NMR, and X-ray crystallographic analysis in case of compound 3. All isolated compounds were evaluated for their antimicrobial activity against a panel of clinically significant microorganisms. Compounds 1 and 3 selectively inhibited Enterococcus faecalis (MIC: 256 μg/mL). Compound 2 was found to have antibacterial and antifungal activity against Escherichia coli (MIC: 64 μg/mL), Salmonella enterica (MIC: 256 μg/mL), Staphylococcus aureus (MIC: 256 μg/mL), Enterococcus faecalis (MIC: 256 μg/mL), and Candida albicans (MIC: 64 μg/mL). Except for compounds 9 and 10, the other known metabolites (4-8) also exhibited antimicrobial activity.
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Affiliation(s)
- Duc Tuan Cao
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST , Hanoi , Vietnam.,Faculty of Pharmacy, Haiphong University of Medicine and Pharmacy , Haiphong , Vietnam
| | - Van Hieu Tran
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam
| | - Van Nam Vu
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST , Hanoi , Vietnam
| | - Thi Hong Minh Le
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam
| | - Thi Quyen Vu
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam
| | - Hung Huy Nguyen
- Faculty of Chemistry, VNU University of Sciences , Hanoi , Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hà Nội , Vietnam.,Academy of Science and Technology , Hanoi , Vietnam.,Faculty of Chemistry, Graduate University of Science and Technology, VAST , Hanoi , Vietnam
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12
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Chau VM, Engeln JT, Axelrath S, Khatter SJ, Kwon R, Melton MA, Reinsvold MC, Staley VM, To J, Tanabe KJ, Wojcik R. Beyond the Chief Complaint: Our Patients' Worries. J Med Humanit 2017; 38:541-547. [PMID: 28975579 DOI: 10.1007/s10912-017-9479-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fourth-year medical students at the University of Colorado School of Medicine distributed cards to patients in the emergency department asking, "What Worries You Most?" The patients' responses provided insight about their most pressing concerns, often unrelated to their "chief complaints."
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Affiliation(s)
- V M Chau
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA.
| | - J T Engeln
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - S Axelrath
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - S J Khatter
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - R Kwon
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - M A Melton
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - M C Reinsvold
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - V M Staley
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - J To
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - K J Tanabe
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
| | - R Wojcik
- Gold Humanism Honor Society, Class of 2017, University of Colorado School of Medicine, Aurora, CO, USA
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13
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Trieu QH, Mai HDT, Litaudon M, Phi Thi D, Tran TA, Nguyen VH, Chau VM, Pham VC. Two new linear acetogenins from the fruits of Goniothalamus gracilipes. Nat Prod Res 2017; 32:287-293. [DOI: 10.1080/14786419.2017.1354189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Quy Hung Trieu
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
- Faculty of Natural Sciences, Hung Vuong University, Viettri, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Marc Litaudon
- Département de Chimie des Substances Naturelles et Chimie Médicinale, Institut de Chimie des Substances Naturelles, Paris, France
| | - Dao Phi Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Tuan Anh Tran
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
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14
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Phi TD, Mai HDT, Tran VH, Vu VL, Truong BN, Tran TA, Chau VM, Pham VC. Synthesis of bengamide E analogues and their cytotoxic activity. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Nguyen TT, Truong BN, Doan Thi Mai H, Litaudon M, Nguyen VH, Do Thi T, Chau VM, Pham VC. Cytotoxic dammarane-type triterpenoids from the leaves of Viburnum sambucinum. Bioorg Med Chem Lett 2017; 27:1665-1669. [PMID: 28318944 DOI: 10.1016/j.bmcl.2017.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/17/2017] [Accepted: 03/06/2017] [Indexed: 11/30/2022]
Abstract
Four new dammarane-type triterpenoids (1-4) and twelve known compounds (5-16) were isolated from the leaves of Viburnum sambucinum Reinw. ex Blume. Their structures were determined by spectral data analysis, including MS and 2D NMR. Cytotoxic activity evaluation in vitro against four cancer cell lines (KB, LU-1, HepG2 and MCF7) suggested that the octanor-dammarane derivatives were the main cytotoxic components of the leaves of V. sambucinum.
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Affiliation(s)
- Thanh Tra Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam; Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Univ. Paris-Sud, 91198 Gif-sur-Yvette, France
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Thao Do Thi
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
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16
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Tran DT, Mai HDT, Tran HG, Truong BN, Litaudon M, Nguyen VH, Chau VM, Van CP. Two new sesquiterpenes from the fruits of Fissistigma villosissimum. J Asian Nat Prod Res 2017; 19:235-240. [PMID: 27324457 DOI: 10.1080/10286020.2016.1196195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/26/2016] [Indexed: 06/06/2023]
Abstract
Two new sesquiterpenes, namely fissistinone (1) and fissistinol (2), along with ten known compounds (3-12), were isolated from the fruits of Fissistigma villosissimum. Their structures were elucidated on the basis of spectral data analysis, including one-dimensional (1D), two-dimensional (2D)-nuclear magnetic resonance (NMR), and high-resolution-electrospray ionization-mass spectrometry (HR-ESI-MS). Compounds 1-8 were evaluated for their cytotoxic activities against KB cell line; however, all these compounds did not show cytotoxic activity.
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Affiliation(s)
- Dang Thach Tran
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
- c Faculty of Technology , Industrial University of Vinh , Vinh , Vietnam
| | - Huong Doan Thi Mai
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Huu Giap Tran
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Bich Ngan Truong
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Marc Litaudon
- b Département de Chimie des Substances Naturelles et Chimie Médicinale , Institut de Chimie des Substances Naturelles , Gif-sur-Yvette Cedex 91190 , France
| | - Van Hung Nguyen
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Van Minh Chau
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Cuong Pham Van
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
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17
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Phi TD, Doan Thi Mai H, Tran VH, Truong BN, Tran TA, Vu VL, Chau VM, Pham VC. Design, synthesis and cytotoxicity of bengamide analogues and their epimers. Medchemcomm 2017; 8:445-451. [PMID: 30108762 DOI: 10.1039/c6md00587j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/18/2016] [Indexed: 11/21/2022]
Abstract
Starting from d-glycero-d-gulo-heptonic acid γ-lactone and amino acids, a number of diastereoisomeric bengamide analogues were synthesized. Optimization of the reaction conditions revealed that microwave irradiation assistance is a powerful method for the preparation of aminolactams, as well as for the coupling reactions of the lactone 5 with aminolactams. Cytotoxic activity evaluation against six cancer cell lines (KB, HepG2, LU1, MCF7, HL60, and Hela) demonstrated that the configuration of C-2' seems to be critical for the cytotoxic activity of compounds 8b (2'R) and 8a (2'S). Additionally, comparison of cytotoxicity of the protected acetonide compounds with that of their corresponding deprotected bengamide analogues suggested that the flexibility of the ketide side chain should be required for their cytotoxic activity.
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Affiliation(s)
- Thi Dao Phi
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049.,Graduate University of Science and Technology , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Van Hieu Tran
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Tuan Anh Tran
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049.,University of Science and Technology of Hanoi , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam
| | - Van Loi Vu
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
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18
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Nguyen TT, Truong BN, Mai HDT, Litaudon M, Nguyen VH, Thi TD, Tran VH, Tran DT, Chau VM, Pham VC. New Cyclopentyl Fatty Acid and Cyanohydrin Glycosides from Fruits of Hydnocarpus hainanensis. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three new compounds, hydnohainanic acid (1), and hydnohainanin A (2) and B (3) were isolated from the fruits of Hydnocarpus hainanensis (Achariaceae). Their structures were determined by spectroscopic analysis, including 2D NMR, and MS. Compounds 1-3 were evaluated for their cytotoxic activity against the KB cell line. Compound 1 had a moderate cytotoxicity with an IC50 value of 32.5 μg/mL, while the two remaining compounds did not exhibit inhibition, even at a concentration of 128 μg/mL.
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Affiliation(s)
- Thanh Tra Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
- Institute of Chemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Univ. Paris-Sud, 91198, Gif-sur-Yvette, France
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Thao Do Thi
- Institute of Biotechnology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Hieu Tran
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Dang Thach Tran
- Industrial University of Vinh, 26 Nguyen Thai Hoc, Vinh, Nghe-An, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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19
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Thi QV, Tran VH, Mai HDT, Le CV, Hong MLT, Murphy BT, Chau VM, Pham VC. Secondary Metabolites from an Actinomycete from Vietnam's East Sea. Nat Prod Commun 2016; 11:401-404. [PMID: 27169191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Analysis of an antimicrobial extract prepared from culture broth of the marine-derived actinomycete Nocardiopsis sp. (strain G057) led to the isolation of twelve compounds, 1-12. Compound 1 (2-[(2R-hydroxypropanoyl)amino]benzamide) was found to be a new enantiomeric isomer while compounds 2 (3-acetyl-4-hydroxycinnoline) and 3 (3,3'-bis-indole) were isolated from a natural source for the first time. The structures of 1-12 were determined by analyses of MS and 2D NMR data. All compounds were evaluated for their antimicrobial activity against a panel of clinically significant microorganisms. Compound 1 selectively inhibited Escherichia coli (MIC: 16 µg/mL). Compounds 2 and 3 exhibited antimicrobial activity against several strains of both Gram-positive and Gram-negative bacteria, and the yeast Candida albicans. Cytotoxic evaluation of compounds 1-3 against four cancer cell lines (KB, LU-1, HepG-2 and MCF-7) indicated that compound 3 produced a weak inhibition against KB and LU cell lines. Two remaining compounds, 1 and 2 were not cytotoxic, even at the concentration of 128 µg/mL.
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20
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Abstract
Analysis of an antimicrobial extract prepared from culture broth of the marine-derived actinomycete Nocardiopsis sp. (strain G057) led to the isolation of twelve compounds, 1–12. Compound 1 (2-[(2 R-hydroxypropanoyl)amino]benzamide) was found to be a new enantiomeric isomer while compounds 2 (3-acetyl-4-hydroxycinnoline) and 3 (3,3′-bis-indole) were isolated from a natural source for the first time. The structures of 1 – 12 were determined by analyses of MS and 2D NMR data. All compounds were evaluated for their antimicrobial activity against a panel of clinically significant microorganisms. Compound 1 selectively inhibited Escherichia coli (MIC: 16 μg/mL). Compounds 2 and 3 exhibited antimicrobial activity against several strains of both Gram-positive and Gram-negative bacteria, and the yeast Candida albicans. Cytotoxic evaluation of compounds 1 – 3 against four cancer cell lines (KB, LU-1, HepG-2 and MCF-7) indicated that compound 3 produced a weak inhibition against KB and LU cell lines. Two remaining compounds, 1 and 2 were not cytotoxic, even at the concentration of 128 μg/mL.
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Affiliation(s)
- Quyen Vu Thi
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Hieu Tran
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Cong Vinh Le
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Minh Le Thi Hong
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Brian T. Murphy
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street (MC 781), Room 539, Chicago, Illinois 60612-7231, United States
| | - Van Minh Chau
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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21
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Thi QV, Tran VH, Mai HDT, Le CV, Hong MLT, Murphy BT, Chau VM, Pham VC. Antimicrobial Metabolites from a Marine-Derived Actinomycete in Vietnam's East Sea. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two new compounds, a quinoline alkaloid (1) and a 1,4-dioxane derivative (2), were isolated from culture broth of the marine-derived actinomycete Micromonospora sp. (strain G019) by bioassay-guided fractionation. This actinomycete strain was isolated from sediment, collected at Cát Bà Peninsula, Vietnam. The taxonomic identification was achieved by analysis of 16S rRNA gene sequences. On the basis of morphological and phylogenetic evidence, strain G019 was assigned to the genus Micromonospora. The structures of 1 and 2 were established by spectroscopic data analysis, including one- and two-dimensional NMR, and MS. Compound 1 was found to have antibacterial activity against Escherichia coli (MIC: 48 μg/mL), Salmonella enterica (MIC: 96 μg/mL) and Enterococcus faecalis (MIC: 128 μg/mL), while compound 2 showed inhibitory activity against Enterococcus faecalis (MIC: 32 μg/mL) and Candida albicans (MIC: 64 μg/mL).
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Affiliation(s)
- Quyen Vu Thi
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Hieu Tran
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Cong Vinh Le
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Minh Le Thi Hong
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Brian T. Murphy
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street (MC 781), Room 539, Chicago, Illinois 60612-7231, USA
| | - Van Minh Chau
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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22
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Thi QV, Tran VH, Maia HDT, Le CV, Hong MLT, Murphy BT, Chau VM, Pham VC. Antimicrobial Metabolites from a Marine-Derived Actinomycete in Vietnam's East Sea. Nat Prod Commun 2016; 11:49-51. [PMID: 26996018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Two new compounds, a quinoline alkaloid (1) and a 1,4-dioxane derivative (2), were isolated from culture broth of the marine-derived actinomycete Micromonospora sp. (strain G019) by bioassay-guided fractionation. This actinomycete strain was isolated from sediment, collected at Cát Bà Peninsula, Vietnam. The taxonomic identification was achieved by analysis of 16S rRNA gene sequences. On the basis of morphological and phylogenetic evidence, strain G019 was assigned to the genus Micromonospora. The structures of 1 and 2 were established by spectroscopic data analysis, including one- and two-dimensional NMR, and MS. Compound 1 was found to have antibacterial activity against Escherichia coli (MIC: 48 µg/mL), Salmonella enterica (MIC: 96 µg/mL) and Enterococcus faecalis (MIC: 128 µg/mL), while compound 2 showed inhibitory activity against Enterococcusfaecalis (MIC: 32 µg/mL) and Candida albicans (MIC: 64 µg/mL).
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23
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Nguyen XN, Nguyen TC, Dan TTH, Do TT, Nguyen HN, Pham HY, Do CT, Vu KT, Hoang LTA, Bui HT, Chau VM, Phan VK. (1)H and (13)C NMR assignments of sesquiterpenes from Dysidea fragilis. Magn Reson Chem 2015; 53:1057-1060. [PMID: 26290322 DOI: 10.1002/mrc.4288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 05/29/2015] [Accepted: 06/05/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Xuan Nhiem Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Cuc Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Thuy Hang Dan
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Trang Do
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hoai Nam Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hai Yen Pham
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Cong Thung Do
- Institute of Marine Environment and Resources, VAST, 246 Danang, Ngo Quyen, Haiphong, Vietnam
| | - Kim Thu Vu
- Faculty of Basic Science, Hanoi University of Mining and Geology, Dongngac, Tuliem, Hanoi, Vietnam
| | - Le Tuan Anh Hoang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Huu Tai Bui
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Kiem Phan
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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24
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Ngoc PB, Pham TB, Nguyen HD, Tran TT, Chu HH, Chau VM, Lee JH, Nguyen TD. A new anti-inflammatory β-carboline alkaloid from the hairy-root cultures of Eurycoma longifolia. Nat Prod Res 2015; 30:1360-5. [DOI: 10.1080/14786419.2015.1056187] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Pham Bich Ngoc
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thanh Binh Pham
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet Cau Giay, Hanoi, Vietnam
| | - Hai Dang Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet Cau Giay, Hanoi, Vietnam
| | - Thu Trang Tran
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hoang Ha Chu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet Cau Giay, Hanoi, Vietnam
| | - Jeong-Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 200-701, Korea
| | - Tien Dat Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet Cau Giay, Hanoi, Vietnam
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Lan PDT, Nguyen QV, Vu VC, Le TN, Nguyen TH, Pham TH, Chau VM, Pham VC. Synthesis of Auronol Derivatives and Their Immunostimulating Activity. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The first synthesis of alphitonin-4- O-β-D-glucopyranoside (1) was described. Since, the nitrile group, a strong hydrogen bond acceptor with a significant solvation shell, is considered to have capacity comparable to sugar for facilitating the cell membrane permeation of the molecules, several alphitonin-4- O-β-D-glucopyranoside and maesopsin-4- O-β-D-glucopyranoside analogues were prepared by replacing glucopyranose moieties with acetonitrile groups. Immunostimulating activity evaluation on lymphocyte proliferation indicated that the compound 7 with an acetonitrile group at OH-4 of alphitonin had a strong stimulation effect on lymphocyte proliferation. Interestingly, when tested against the normal cell NIH/3T3, 7 had no inhibition even at the concentration of 100 μg/mL.
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Affiliation(s)
- Phương Diep Thi Lan
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
- Department of Chemistry, University of Quy Nhon, 170 An Duong Vuong, Quy Nhon, Vietnam
| | - Quoc Vuong Nguyen
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Chien Vu
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Tuan Nguyen Le
- Department of Chemistry, University of Quy Nhon, 170 An Duong Vuong, Quy Nhon, Vietnam
| | - Thi Hue Nguyen
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Hang Pham
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry-Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Diep Thi Lan P, Nguydna QV, Vu VC, Le TN, Nguyena TH, Phama TH, Chau VM, Pham VC. Synthesis of auronol derivatives and their immunostimulating activity. Nat Prod Commun 2015; 10:591-594. [PMID: 25973484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
The first synthesis of alphitonin-4-O-β-D-glucopyranoside (1) was described. Since, the nitrile group, a strong hydrogen bond acceptor with a significant solvation shell, is considered to have capacity comparable to sugar for facilitating the cell membrane permeation of the molecules, several alphitonin-4-O-β-D-glucopyranoside and maesopsin-4-O-β-D-glucopyranoside analogues were prepared by replacing glucopyranose moieties with acetonitrile groups. Immunostimulating activity evaluation on lymphocyte proliferation indicated that the compound 7 with an acetonitrile group at OH-4 of alphitonin had a strong stimulation effect on lymphocyte proliferation. Interestingly, when tested against the normal cell NIH/3T3, 7 had no inhibition even at the concentration of 100 µg/mL.
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Nguyen VH, Pham VC, Mai HDT, Le TN, Nguyen TMH, Vu VN, Tran HG, Do TT, Dehaen W, Chau VM. Synthesis and biological evaluation of shikimic acid derivatives. ACTA ACUST UNITED AC 2014. [DOI: 10.5155/eurjchem.5.4.601-606.1096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Mai HDT, Thanh GV, Tran VH, Vu VN, Vu VL, Le CV, Nguyen TL, Phi TD, Truong BN, Chau VM, Pham VC. Synthesis and Biological Evaluation of Febrifugine Analogues. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400901213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A series of febrifugine analogues were designed and synthesized. Antimalarial activity evaluation of the synthetic compounds indicated that these derivatives had a strong inhibition against both chloroquine-sensitive and -resistant Plasmodium falciparum parasites. Many of them were found to be more active than febrifugine hydrochloride. The tested analogues had also a significant cytotoxicity against four cancer cell lines (KB, MCF7, LU1 and HepG2). Among the synthetic analogues, two compounds 17b and 17h displayed a moderate cytotoxicity while they exhibited a remarkable antimalarial activity.
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Affiliation(s)
- Huong Doan Thi Mai
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Giang Vo Thanh
- University Paris-Sud, 15 Rue Georges Clemenceau, 91405 Orsay, France
| | - Van Hieu Tran
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Nam Vu
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Loi Vu
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Cong Vinh Le
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thuy Linh Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Dao Phi
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Bich Ngan Truong
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Doan Thi Mai H, Vo Thanh G, Tran VH, Vu VN, Vu VL, Truong BN, Phi TD, Chau VM, Pham VC. Synthesis of febrifuginol analogues and evaluation of their biological activities. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.11.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mai HDT, Thanh GV, Tran VH, Vu VN, Vu VL, Le CV, Nguyen TL, Phi TD, Truong BN, Chau VM, Pham VC. Synthesis and biological evaluation of febrifugine analogues. Nat Prod Commun 2014; 9:1717-1720. [PMID: 25632466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
A series of febrifugine analogues were designed and synthesized. Antimalarial activity evaluation of the synthetic compounds indicated that these derivatives had a strong inhibition against both chloroquine-sensitive and -resistant Plasmodium falciparum parasites. Many of them were found to be more active than febrifugine hydrochloride. The tested analogues had also a significant cytotoxicity against four cancer cell lines (KB, MCF7, LU1 and HepG2). Among the synthetic analogues, two compounds 17b and 17h displayed a moderate cytotoxicity while they exhibited a remarkable antimalarial activity.
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31
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Nguyen QV, Lan PDT, Thi HP, Vu VC, Le TN, Chau VM, Pham VC. Facile, protection-free, one-pot synthesis of aureusidin. Nat Prod Commun 2014; 9:1563-1566. [PMID: 25532281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
A new, reliable, and convenient protection-free one-pot method for the synthesis of aureusidin (1) is described. The present synthetic approach involves the condensation of 4,6-dihydroxybenzofuranone with 3,4-dihydroxybenzaldehyde in the presence of concentrated HCl to afford aureusidin (1) in good yield with high purity. This procedure offers a short and simple route for the preparation of aureusidin (1), a bioactive natural product from several vegetal species, as well as for synthesis of other aurones.
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Nguyen QV, Lan PDT, Thi HP, Vu VC, Le TN, Chau VM, Pham VC. Facile, Protection-Free, One-Pot Synthesis of Aureusidin. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400901108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A new, reliable, and convenient protection-free one-pot method for the synthesis of aureusidin (1) is described. The present synthetic approach involves the condensation of 4,6-dihydroxybenzofuranone with 3,4-dihydroxybenzaldehyde in the presence of concentrated HCl to afford aureusidin (1) in good yield with high purity. This procedure offers a short and simple route for the preparation of aureusidin (1), a bioactive natural product from several vegetal species, as well as for synthesis of other aurones.
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Affiliation(s)
- Quoc Vuong Nguyen
- Institute of Marine Biochemistry–Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Phuong Diep Thi Lan
- Department of Chemistry, University of QuyNhon, 170 An Duong Vuong, Quy Nhon, Vietnam
| | - Hang Pham Thi
- Institute of Marine Biochemistry–Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Chien Vu
- Institute of Marine Biochemistry–Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Tuan Nguyen Le
- Department of Chemistry, University of QuyNhon, 170 An Duong Vuong, Quy Nhon, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry–Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry–Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Nguyen PT, Bui TTL, Chau ND, Bui HT, Kim EJ, Kang HK, Lee SH, Jang HD, Nguyen TC, Nguyen VT, Nguyen XC, Nguyen HN, Chau VM, Kim YH. In vitro evaluation of the antioxidant and cytotoxic activities of constituents of the mangrove Lumnitzera racemosa Willd. Arch Pharm Res 2014; 38:446-55. [PMID: 25001899 DOI: 10.1007/s12272-014-0429-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 06/18/2014] [Indexed: 10/25/2022]
Abstract
This study performed phytochemical and bioactive assessments of the mangrove Lumnitzera racemosa Willd. leaves. Bioassay-guided fractionation of the methanolic extracts led to the identification of thirty-six compounds (1-36), their structures were elucidated using detailed NMR spectroscopic and MS analysis. The extracts, fractions, and the isolated compounds were screened for potential antioxidant and cytotoxic activities. Antioxidant assays were performed using peroxyl radical-scavenging and reducing assays, whereas cytotoxicity was measured using MTT assays in HL-60 and Hel-299 cell lines. The methanolic extract, CH2Cl2 and n-BuOH fractions (10.0 μg/mL) exhibited potent antioxidant activity, with Trolox equivalent (TE) values of 24.94 ± 0.59, 28.34 ± 0.20, and 27.09 ± 0.37 (μM), respectively. In addition, the isolated compounds exerted cytotoxic effects in a dose-dependent manner; compounds 1 and 14 exhibited the most potent cytotoxicity in HL-60 cells, with IC50 values of 0.15 ± 0.29 and 0.60 ± 0.16 μM, respectively. To clarify the mechanism(s) behind these cytotoxic effects, we measured the time-dependent changes in apoptotic markers including the condensation and fragmentation of nuclear chromatin, and the downregulation of p-ERK1/2, p-AKT, and c-Myc levels.
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Affiliation(s)
- Phuong Thao Nguyen
- College of Pharmacy, Chungnam National University, Daejeon, 305-764, Republic of Korea
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Nguyen VH, Pham VC, Do TT, Mai HDT, Le NT, Vu VN, Tran VH, Nguyen TMH, Dehaen W, Chau VM. Synthesis and biological evaluation of oseltamivir analogues from shikimic acid. Nat Prod Commun 2014; 9:977-980. [PMID: 25230508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
New oseltamivir analogues were designed and synthesized, starting from shikimic acid. Biological evaluation against three human cancer cell lines (KB, MCF7 and Lu-1) showed that many of them exhibited cytotoxic activity. Azides 5 are more active than the corresponding amines 6. Thus, the reduction of the azide group into amine led to the loss of cytotoxicity. The compounds with a cyclohexanemethyloxy group at C-3 were more active than the other investigated compounds belonging to the same series. This cyclohexanemethyloxy group seems to be critical for the cytotoxic activity of this class of compounds. The synthetic oseltamivir analogues 6a-e had no inhibition activity, even at the concentration of 50 microM when they were evaluated for their in vitro influenza A neuraminidase inhibitory activity by an enzymatic assay.
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Nguyen VH, Pham VC, Do TT, Mai HDT, Le NT, Vu VN, Tran VH, Nguyen TMH, Dehaen W, Chau VM. Synthesis and Biological Evaluation of Oseltamivir Analogues from Shikimic Acid. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
New oseltamivir analogues were designed and synthesized, starting from shikimic acid. Biological evaluation against three human cancer cell lines (KB, MCF7 and Lu-1) showed that many of them exhibited cytotoxic activity. Azides 5 are more active than the corresponding amines 6. Thus, the reduction of the azide group into amine led to the loss of cytotoxicity. The compounds with a cyclohexanemethyloxy group at C-3 were more active than the other investigated compounds belonging to the same series. This cyclohexanemethyloxy group seems to be critical for the cytotoxic activity of this class of compounds. The synthetic oseltamivir analogues 6a-e had no inhibition activity, even at the concentration of 50 μM when they were evaluated for their in vitro influenza A neuraminidase inhibitory activity by an enzymatic assay.
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Affiliation(s)
- Van Hung Nguyen
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Thi Thao Do
- Institute of Biotechnology – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Nguyen Thanh Le
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Van Nam Vu
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Van Hieu Tran
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Thi Minh Hang Nguyen
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Wim Dehaen
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F 3001, Leuven, Belgium
| | - Van Minh Chau
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
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Apel C, Gény C, Dumontet V, Birlirakis N, Roussi F, Pham VC, Doan Thi Mai H, Nguyen VH, Chau VM, Litaudon M. Endiandric acid analogues from Beilschmiedia ferruginea as dual inhibitors of Bcl-xL/Bak and Mcl-1/Bid interactions. J Nat Prod 2014; 77:1430-1437. [PMID: 24901800 DOI: 10.1021/np500170v] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A rapid screening by (1)H and (1)H-(13)C HSQC NMR spectroscopy of EtOAc extracts of Endiandra and Beilschmiedia species allowed the selection of Beilschmiedia ferruginea leaves and flowers extract for a chemical investigation, leading to the isolation of 11 new tetracyclic endiandric acid analogues, named ferrugineic acids A-K (1-11). Their structures were determined by 1D and 2D NMR spectroscopic analysis in combination with HRMS data. These compounds were assayed for Bcl-xL and Mcl-1 binding affinities. Ferrugineic acids B, C, and J (2, 3, and 10) exhibited significant binding affinity for both antiapoptotic proteins Bcl-xL (Ki = 19.2, 12.6, and 19.4 μM, respectively) and Mcl-1 (Ki = 14.0, 13.0, and 5.2 μM, respectively), and ferrugineic acid D (4) showed only significant inhibiting activity for Mcl-1 (Ki = 5.9 μM).
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Affiliation(s)
- Cécile Apel
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles (ICSN), CNRS , 1 av de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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Pham THM, Do TL, Nguyen QT, Nguyen NT, Vu PN, Nong VH, Phan VK, Nguyen XN, Chau VM, Park S, Kim SH. New Dibenzocyclooctadiene Lignan from Kadsura induta and Their Cytotoxic Activities. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.6.1859] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Trinh Thi Thanh V, Pham VC, Doan Thi Mai H, Litaudon M, Guéritte F, Nguyen VH, Chau VM. Cytotoxic aryltetralin lignans from fruits of Cleistanthus indochinensis. Planta Med 2014; 80:695-702. [PMID: 24896244 DOI: 10.1055/s-0034-1368505] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Eight new aryltetralin lignans, cleisindosides A-F (1-6), picroburseranin (7), and 7-hydroxypicropolygamain (8), were isolated from the fruits of Cleistanthus indochinensis (Euphorbiaceae). The structures of the isolates were established on the basis of their one- and two-dimensional NMR spectral data, as well as their mass spectrometric data. Compound 7 was found to have potent cytotoxicity against oral epidermoid carcinoma cells with an IC50 value of 0.062 µM, whereas glycosylation to 3 (IC50 7.5 µM) and stereochemical changes to 8 (IC50 10.8 µM) led to marked decreases in biological activity. Thus, it was determined that the C-7 and C-8' positions are critical for the biological activity of the lignans from this plant.
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Affiliation(s)
- Van Trinh Thi Thanh
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, Gif-sur Yvette, France
| | | | - Van Hung Nguyen
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
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Trieu QH, Mai HDT, Pham VC, Litaudon M, Gueritte F, Retailleau P, Schmitz-Afonso I, Gimello O, Nguyen VH, Chau VM. Styryllactones and acetogenins from the fruits of Goniothalamus macrocalyx. Nat Prod Commun 2014; 9:495-498. [PMID: 24868866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
Two new styryllactones, macrocalactone (1) and 3-deoxycardiobutanolide (2), were isolated from the fruits of Goniothalamus macrocalyx Ban (Annonaceae), together with seven known compounds including four acetogenins, annonacin (3), solamin (4), isoannonacin (5), trans-murisolinone (6), and three other compounds, 7-acetylaltholactone (7), beta-caryophyllene-8R,9R-oxide (8) and 2-(2'-hydroxytetracosanoylamino)-octadecane-1,3,4-triol (9). Their structures were determined by spectroscopic and MS analysis. The absolute configuration of 1 was determined by X-ray crystallographic analysis. The structures of the acetogenins were confirmed by liquid chromatography coupled to a hybrid quadrupole-time of flight mass spectrometer, using post-column lithium infusion. The results were compared with the fragmentation obtained with a hybrid linear trap-orbitrap mass spectrometer. Compound 7 had cytotoxicity against KB, HepG2, Lu, and MCF7 cell lines with IC50 values of 13.1, 23.7, 26.3 and 60.2 microM, respectively, whereas annonacin (3) was selectively active against KB cells (IC50 value of 6.5 microM). The discovery of 3-deoxycardiobutanolide (2) from the fruits of this plant revealed that G. macrocalyx could be a valuable natural resource to obtain this compound as it has been previously reported to have a significant cytotoxicity against different cancer cell lines, especially HL-60 cells.
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Trieu QH, Mai HDT, Pham VC, Litaudon M, Gueritte F, Retailleau P, Schmitz-Afonso I, Gimello O, Nguyen VH, Chau VM. Styryllactones and Acetogenins from the Fruits of Goniothalamus macrocalyx. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Two new styryllactones, macrocalactone (1) and 3-deoxycardiobutanolide (2), were isolated from the fruits of Goniothalamus macrocalyx Ban (Annonaceae), together with seven known compounds including four acetogenins, annonacin (3), solamin (4), isoannonacin (5), trans-murisolinone (6), and three other compounds, 7-acetylaltholactone (7), β-caryophyllene-8R,9R-oxide (8) and 2-(2′-hydroxytetracosanoylamino)-octadecane-l,3,4-triol (9). Their structures were determined by spectroscopic and MS analysis. The absolute configuration of I was determined by X-ray crystallographic analysis. The structures of the acetogenins were confirmed by liquid chromatography coupled to a hybrid quadrupole-time of flight mass spectrometer, using post-column lithium infusion. The results were compared with the fragmentation obtained with a hybrid linear trap-orbitrap mass spectrometer. Compound 7 had cytotoxicity against KB, HepG2, Lu, and MCF7 cell lines with IC50 values of 13.1, 23.7, 26.3 and 60.2 μM, respectively, whereas annonacin (3) was selectively active against KB cells (IC50 value of 6.5 μM). The discovery of 3-deoxycardiobutanolide (2) from the fruits of this plant revealed that G. macrocalyx could be a valuable natural resource to obtain this compound as it has been previously reported to have a significant cytotoxicity against different cancer cell lines, especially HL-60 cells.
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Affiliation(s)
- Quy Hung Trieu
- Institute of Marine Biochemistry - VAST, 18, Hoang Quoc Viet Road, CauGiay, Hanoi, Vietnam
- HungVuong University, PhuTho, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry - VAST, 18, Hoang Quoc Viet Road, CauGiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry - VAST, 18, Hoang Quoc Viet Road, CauGiay, Hanoi, Vietnam
| | - Marc Litaudon
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Françoise Gueritte
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Pascal Retailleau
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Isabelle Schmitz-Afonso
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Olinda Gimello
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Van Hung Nguyen
- Institute of Marine Biochemistry - VAST, 18, Hoang Quoc Viet Road, CauGiay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry - VAST, 18, Hoang Quoc Viet Road, CauGiay, Hanoi, Vietnam
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Tran HHT, Nguyen MC, Le HT, Nguyen TL, Pham TB, Chau VM, Nguyen HN, Nguyen TD. Inhibitors of α-glucosidase and α-amylase from Cyperus rotundus. Pharm Biol 2014; 52:74-77. [PMID: 24044731 DOI: 10.3109/13880209.2013.814692] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
CONTEXT A methanol extract of Cyperus rotundus L. (Cyperaceae) rhizomes showed inhibitory activity against α-glucosidase and α-amylase, two enzymes involve in carbohydrate digestion. OBJECTIVE Identification of compounds from C. rotundus rhizomes responsible for the inhibition of α-glucosidase and α-amylase. MATERIALS AND METHODS Compounds were identified by a phytochemical investigation using combined chromatographic and spectroscopic methods. α-glucosidase and α-amylase inhibitory activities were evaluated by in vitro enzyme inhibition assays. RESULTS A new (2RS,3SR)-3,4',5,6,7,8-hexahydroxyflavane (1), together with three known stilbene dimers cassigarol E (2), scirpusin A (3) and B (4) were isolated. Compound 2 inhibited both α-glucosidase and α-amylase activities while the flavane 1 only showed effect on α-amylase, and compounds 3 and 4 were active on α-glucosidase. All four compounds showed significant 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity. DISCUSSION The inhibitory activities against α-amylase and α-glucosidase of the C. rotundus rhizomes were reported for the first time. Stilbene dimers are considered as potent inhibitors of α-glucosidase and promising antihyperglycemic agents. CONCLUSION The isolated compounds may contribute to the antidiabetic property of C. rotundus.
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Affiliation(s)
- Hong Hanh Thi Tran
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology , 18-Hoang Quoc Viet, Cau Giay, Hanoi , Vietnam and
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Nguyen XC, Longeon A, Pham VC, Urvois F, Bressy C, Trinh TTV, Nguyen HN, Phan VK, Chau VM, Briand JF, Bourguet-Kondracki ML. Antifouling 26,27-cyclosterols from the Vietnamese marine sponge Xestospongia testudinaria. J Nat Prod 2013; 76:1313-1318. [PMID: 23829580 DOI: 10.1021/np400288j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three new C29 sterols with a cyclopropane ring cyclized between C-26 and C-27 of the side chain, aragusterol I (1), 21-O-octadecanoyl-xestokerol A (4), and 7β-hydroxypetrosterol (5b), were isolated from the Vietnamese marine sponge Xestospongia testudinaria, along with the known compounds, aragusterol B (2), xestokerol A (3), 7α-hydroxypetrosterol (5a), 7-oxopetrosterol (6), and petrosterol (7). The structures of the new compounds were established by analysis of spectroscopic data including 1D and 2D NMR, and high-resolution electrospray ionization mass spectrometry (HRESIMS). Their capacity to inhibit the adhesion of isolated bacteria from marine biofilms was evaluated against the bacterial strains Pseudoalteromonas sp. D41, Pseudoalteromonas sp. TC8, and Polaribacter sp. TC5. Aragusterol B (2) and 21-O-octadecanoyl-xestokerol A (4) exhibited the most potent antifouling activity with EC50 values close to these reported in the literature for tributyltin oxide, a marine anti-biofouling agent now considered to be a severe marine pollutant. Due to its comparable activity to tributyltin oxide and its absence of toxicity, the new 26,27-cyclosterol, 21-O-octadecanoyl-xestokerol A (4) constitutes a promising scaffold for further investigations.
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Affiliation(s)
- Xuan Cuong Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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Le MH, Do TTH, Phan VK, Chau VM, Nguyen THV, Nguyen XN, Bui HT, Pham QL, Bui KA, Kim SH, Hong HJ, Kim S, Koh YS, Kim YH. ERRATUM. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.7.2218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nguyen PT, Nguyen HN, Nguyen XC, Bui HT, Tran HQ, Nguyen TTN, Bui TTL, Yang SY, Choi CH, Kim S, Chae D, Koh YS, Phan VK, Chau VM, Kim YH. Steroidal Constituents from the Soft Coral Sinularia dissecta and Their Inhibitory Effects on Lipopolysaccharide-Stimulated Production of Pro-inflammatory Cytokines in Bone Marrow-Derived Dendritic Cells. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.3.949] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Le MH, Do TTH, Phan VK, Chau VM, Nguyen THV, Nguyen XN, Bui HT, Pham QL, Bui KA, Kim SH, Hong HJ, Kim S, Koh YS, Kim YH. Chemical Constituents of the Rhizome of Eleutherine bulbosa and Their Inhibitory Effect on the Pro-Inflammatory Cytokines Production in Lipopolysaccharide-Stimulated Bone Marrow-derived Dendritic Cells. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nguyen PT, Nguyen HN, Nguyen XC, Nguyen XN, Pham TT, Tran HQ, Nguyen TTN, Phan VK, Chau VM, Kim YH. A New Sterol from the Soft Coral Lobophytum crassum. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.249] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Phan VK, Chau VM, Nguyen XN, Pham HY, Hoang LTA, Nguyen XC, Bui HT, Tran HQ, Truong NH, Kim SH, Kwon SU, Lee YM, Kim YH. Chemical Constituents of Ficus drupacea Leaves and Their α-Glucosidase Inhibitory Activities. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.263] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Trinh Thi Thanh V, Doan Thi Mai H, Pham VC, Litaudon M, Dumontet V, Guéritte F, Nguyen VH, Chau VM. Acetylcholinesterase inhibitors from the leaves of Macaranga kurzii. J Nat Prod 2012; 75:2012-2015. [PMID: 23134335 DOI: 10.1021/np300660y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Bioassay-guided fractionation of an extract of leaves of Macaranga kurzii yielded four new compounds, a stilbene (furanokurzin, 1) and three flavonoids (macakurzin A-C, 2-4). Nine known compounds were also isolated (5-13). Their structures were determined by spectroscopic analyses including MS and 2D NMR. The isolates were all evaluated for acetylcholinesterase inhibitory activity. Compound 6 (trans-3,5-dimethoxystilbene) exhibited the greatest activity (IC50 9 μM). Cytotoxic evaluation against KB cells showed that compound 7 had an IC50 of 4 μM, followed by 11 (IC50 10 μM) and 3 (IC50 13 μM).
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Affiliation(s)
- Van Trinh Thi Thanh
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
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Thanh VTT, Pham VC, Mai HDT, Litaudon M, Guéritte F, Retailleau P, Nguyen VH, Chau VM. Cytotoxic lignans from fruits of Cleistanthus indochinensis: synthesis of cleistantoxin derivatives. J Nat Prod 2012; 75:1578-1583. [PMID: 22938151 DOI: 10.1021/np3003832] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Two new aryl-tetralin lignans, 1 and 2, were isolated from the fruits of Cleistanthus indochinensis by bioassay-guided purification. Their structures were determined by spectroscopic analysis including MS and 2D NMR. The absolute configurations of 1 and 2 were established from examination of their CD spectra. Compound 1 was cytotoxic against KB cells with an IC(50) value of 0.022 μM, while compound 2 had weaker cytotoxicity, with an IC(50) value of 1.4 μM. When tested against other cancer cell lines (MCF-7, MCF-7R, and HT29), 1 showed an IC(50) of 0.014 against MCF-7R cells and an IC(50) of 0.036 μM against MCF-7 cells. A series of amide derivatives of a new lactone, homoderivatives of 1, were prepared. Of these derivatives, only compound 3 had weak cytotoxicity against KB cells.
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Affiliation(s)
- Van Trinh Thi Thanh
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
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Phung TXB, Tran THH, Dan TTH, Chau VM, Hoang TH, Nguyen TD. Chalcone-derived Diels-Alder adducts as NF-κB inhibitors from Morus alba. J Asian Nat Prod Res 2012; 14:596-600. [PMID: 22587800 DOI: 10.1080/10286020.2012.670221] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A bioassay-guided phytochemical fractionation of the methanol extract of the Morus alba root barks led to the isolation of two chalcone-derived Diels-Alder adducts (1 and 2). Their structures were elucidated as kuwanon J 2,4,10″-trimethyl ether (1) and kuwanon R (2) by means of spectroscopic methods. Both compounds strongly inhibited nuclear transcription factor.κB activity with the IC₅₀ values of 4.65 and 7.38 μM, respectively.
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Affiliation(s)
- Thi Xuan Binh Phung
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
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