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Ma W, Wang S, Wang Y, Zeng J, Xu J, He X. Antiproliferative Amaryllidaceae alkaloids from the bulbs of Hymenocallis littoralis (Jacq.) Salisb. PHYTOCHEMISTRY 2022; 197:113112. [PMID: 35101748 DOI: 10.1016/j.phytochem.2022.113112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 01/05/2022] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Seven undescribed Amaryllidaceae alkaloids classified into four types, including the plicamine-type, secoplicamine-type, belladine-type and pretazettine-type, along with another three alkaloids that have not been isolated from plant material and seven known alkaloids, were isolated from the bulbs of Hymenocallis littoralis (Jacq.) Salisb. The structures were elucidated on the basis of various spectroscopic methods (UV, IR, MS, NMR, ECD). The isolated alkaloids were screened for antiproliferative activity against four human tumour cell lines (HepG2, HeLa, SPC-A-1, FaDu) through MTT assay, and some alkaloids exhibited potent cytotoxicity. Meanwhile, cell morphological assessment, flow cytometric analysis, Western blot analysis, clone formation and scratch wound assays were utilized for an undescribed belladine-type alkaloid and two known alkaloids, which had antiproliferative effects on the HepG2 cell line via induction of apoptosis in a dose-dependent manner. A pair of diastereoisomers of Amaryllidaceae alkaloids exhibited significant differences in antiproliferative activity. In addition, the alkaloids also possessed the potential to inhibit tumour cell migration.
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Affiliation(s)
- Wenjing Ma
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Siyu Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Yihai Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China.
| | - Jia Zeng
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Jingwen Xu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China
| | - Xiangjiu He
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China.
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2
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Dong Z, Gao N, Deng B, Huang X, Hu C, Chen P, Wu Q, Lu C, Pan M. Stable transformation of fluorescent proteins into Nosema bombycis by electroporation. Parasit Vectors 2022; 15:141. [PMID: 35449112 PMCID: PMC9022262 DOI: 10.1186/s13071-022-05236-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 03/10/2022] [Indexed: 11/10/2022] Open
Abstract
Background Microsporidia are a group of intracellular parasitic eukaryotes, serious pathogens that cause widespread infection in humans, vertebrates, and invertebrates. Because microsporidia have a thick spore wall structure, the in vitro transformation, cell culture, and genetic operation technology of microsporidia are far behind that of other parasites. Methods In this study, according to an analysis of the life-cycle of microsporidia, Nosema bombycis, and different electro-transformation conditions, the transduction efficiency of introducing foreign genes into N. bombycis was systematically determined. Results We analyzed the direct electro-transformation of foreign genes into germinating N. bombycis using reporters under the regulation of different characteristic promoters. Furthermore, we systematically determined the efficiency of electro-transformation into N. bombycis under different electro-transformation conditions and different developmental stages through an analysis of the whole life-cycle of N. bombycis. These results revealed that foreign genes could be effectively introduced through a perforation voltage of 100 V pulsed for 15 ms during the period of N. bombycis sporeplasm proliferation. Conclusions We present an effective method for electro-transformation of a plasmid encoding a fluorescent protein into N. bombycis, which provides new insight for establishing genetic modifications and potential applications in these intracellular parasites. Graphical Abstract ![]()
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Affiliation(s)
- Zhanqi Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China.,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, 400716, China
| | - Na Gao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Boyuan Deng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Xuhua Huang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China.,The General Extension Station of Sericulture Technology of Guangxi Zhuang Autonomous Region, Nanning, 530007, China
| | - Congwu Hu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Peng Chen
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China.,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, 400716, China
| | - Qin Wu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Cheng Lu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China. .,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, 400716, China.
| | - Minhui Pan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China. .,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, 400716, China.
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Park S, Kim SY, Cho J, Jung D, Seo D, Lee J, Lee S, Yun S, Lee H, Park O, Seo B, Kim S, Seol M, Woo SH, Park TK. Introduction of Para-Hydroxy Benzyl Spacer Greatly Expands the Utility of Ortho-Hydroxy-Protected Aryl Sulfate System: Application to Nonphenolic Payloads. Bioconjug Chem 2019; 30:1969-1978. [DOI: 10.1021/acs.bioconjchem.9b00341] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Yin S, Qiu Y, Jin C, Wang R, Wu S, Liu H, Koo S, Han L, Zhang Y, Gao X, Pang X, Wang T, Yu H. 7‐Deoxynarciclasine shows promising antitumor efficacy by targeting Akt against hepatocellular carcinoma. Int J Cancer 2019; 145:3334-3346. [DOI: 10.1002/ijc.32395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 05/02/2019] [Indexed: 01/17/2023]
Affiliation(s)
- Shuangshuang Yin
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Yuling Qiu
- School of PharmacyTianjin Medical University Tianjin China
| | - Chengyun Jin
- School of Pharmaceutical Sciences, Key Laboratory of State Ministry of Education, Key Laboratory of Henan province for Drug Quality Control and EvaluationZhengzhou University Zhengzhou Henan China
| | - Rui Wang
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Song Wu
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Hongwei Liu
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Sangho Koo
- Department of ChemistryMyongji University Seoul South Korea
| | - Lifeng Han
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Yi Zhang
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Xiumei Gao
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Xu Pang
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Tao Wang
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
| | - Haiyang Yu
- Tianjin State Key Laboratory of Modern Chinese MedicineTianjin University of Traditional Chinese Medicine Tianjin China
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Saidin S, Othman N, Noordin R. In Vitro Testing of Potential Entamoeba histolytica Pyruvate Phosphate Dikinase Inhibitors. Am J Trop Med Hyg 2017; 97:1204-1213. [PMID: 28820699 DOI: 10.4269/ajtmh.17-0132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Adverse effects and resistance to metronidazole have motivated the search for new antiamoebic agents against Entamoeba histolytica. Control of amoeba growth may be achieved by inhibiting the function of the glycolytic enzyme and pyruvate phosphate dikinase (PPDK). In this study, we screened 10 compounds using an in vitro PPDK enzyme assay. These compounds were selected from a virtual screening of compounds in the National Cancer Institute database. The antiamoebic activity of the selected compounds was also evaluated by determining minimal inhibitory concentrations (MICs) and IC50 values using the nitro-blue tetrazolium reduction assay. Seven of the 10 compounds showed inhibitory activities against the adenosine triphosphate (ATP)/inorganic phosphate binding site of the ATP-grasp domain. Two compounds, NSC349156 (pancratistatin) and NSC228137 (7-ethoxy-4-[4-methylphenyl] sulfonyl-3-oxido-2, 1, 3-benzoxadiazol-3-ium), exhibited inhibitory effects on the growth of E. histolytica trophozoites with MIC values of 25 and 50 μM, and IC50 values of 14 and 20.7 μM, respectively.
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Affiliation(s)
- Syazwan Saidin
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, USM, Penang, Malaysia
| | - Nurulhasanah Othman
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, USM, Penang, Malaysia
| | - Rahmah Noordin
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, USM, Penang, Malaysia
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Potter TJ, Ellman JA. Total Synthesis of (+)-Pancratistatin by the Rh(III)-Catalyzed Addition of a Densely Functionalized Benzamide to a Sugar-Derived Nitroalkene. Org Lett 2017; 19:2985-2988. [PMID: 28537406 DOI: 10.1021/acs.orglett.7b01220] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report the concise total synthesis of (+)-pancratistatin, accessed in a 10-step linear sequence from commercially available inputs. The convergent synthesis features a highly diastereoselective Rh(III)-catalyzed C-H bond addition to a d-glucose-derived nitroalkene and a late-stage intramolecular transamidation to furnish the B ring lactam.
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Affiliation(s)
- Tyler J Potter
- Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06520-8170, United States
| | - Jonathan A Ellman
- Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06520-8170, United States
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7
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Kato M, Yasui K, Yamanaka M, Nagasawa K. Synthesis of (+)-trans-Dihydrolycoricidine by an Organocatalytic Enantioselective Friedel-Crafts Reaction. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201500469] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Masaru Kato
- Department of Biotechnology and Life Science, Faculty of Technology; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan), Fax
| | - Koji Yasui
- Department of Biotechnology and Life Science, Faculty of Technology; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan), Fax
| | - Masahiro Yamanaka
- Department of Chemistry, Faculty of Science; Rikkyo University; 3-34-1, Nishi-Ikebukuro, Toshima-ku 171-8501 Tokyo Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life Science, Faculty of Technology; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan), Fax
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8
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Ali HES. Biologically Active Tin Compounds Based on Aziridine and Azepane Derivatives. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.100364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Four of new tin(IV) compounds derived from aziridine and azepane substituents have been synthesized and characterization by elemental microanalysis, atomic absorption, FT-IR and 1H-NMR spectroscopy. These tin-derived compounds exhibited biocidal activities on four different microorganisms: Escherichia coli, Staphylococcus aureus, Candida albicans and Aspergillus niger. The use of common and effective biocides depends on the surfactant molecules. On this basis, surface tension measurements were used to determine the critical micellar concentration (cmc), the minimum average area per surfactant molecule (Amin) and the surface excess concentration (Γ∞). A direct relationship has found between the antimicrobial efficacy and Γ∞.
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Akai S, Kojima M, Yamauchi S, Kohji T, Nakamura Y, Sato KI. A Concise Total Synthesis of (+)-Pancratistatin fromD-Glucose Featuring the Henry Reaction. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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El-Sayed NM, Ismail KA, Ahmed SAEG, Hetta MH. In vitro amoebicidal activity of ethanol extracts of Arachis hypogaea L., Curcuma longa L. and Pancratium maritimum L. on Acanthamoeba castellanii cysts. Parasitol Res 2011; 110:1985-92. [DOI: 10.1007/s00436-011-2727-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 11/18/2011] [Indexed: 10/14/2022]
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11
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Microsporidiosis: Epidemiology, clinical data and therapy. ACTA ACUST UNITED AC 2010; 34:450-64. [DOI: 10.1016/j.gcb.2010.07.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 06/22/2010] [Accepted: 07/05/2010] [Indexed: 11/19/2022]
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12
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Manpadi M, Kireev AS, Magedov IV, Altig J, Tongwa P, Antipin MY, Evidente A, van Otterlo WAL, Kornienko A. Synthesis of structurally simplified analogues of pancratistatin: truncation of the cyclitol ring. J Org Chem 2010; 74:7122-31. [PMID: 19743883 DOI: 10.1021/jo901494r] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pancratistatin is a phenanthridone-type natural product isolated from several plants of the Amaryllidaceae family. Its potent antiproliferative, antivascular, antiviral, and antiparasitic properties have attracted the attention of synthetic, biological, and medicinal chemists. Pancratistatin's low natural availability and complex structure have steered many of these research projects toward the preparation of its simplified synthetic analogues with useful levels of activity. In this work we have developed synthetic chemistry aimed at the preparation of pancratistatin analogues with a truncated cyclitol portion of the molecule. The described synthetic pathways are based on a highly anti-diastereoselective arylcuprate conjugate addition to gamma-alkoxy-alpha,beta-enoates and syn-selective azidation at the alpha-position of ester enolates. Analogues with the formally cleaved C3-C4 bond, and thus containing an open ring C, as well as a compound containing a truncated lactol moiety in lieu of the cyclitol, were prepared. Several of the analogues exhibited weak antiproliferative activity, with the highest potency observed in the case of the lactol analogue. From these results implications for the design of future pancratistatin analogues are discussed. Furthermore, the synthetic pathways can be used to construct pancratistatin-mimetic libraries, in which the cyclitol moiety is replaced by other cyclic motifs.
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Affiliation(s)
- Madhuri Manpadi
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
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13
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Dam JH, Madsen R. Convergent Synthesis of Pancratistatin from Piperonal and Xylose. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900719] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Affiliation(s)
- Madhuri Manpadi
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
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Pandey G, Balakrishnan M, Swaroop PS. A Suzuki Cross-Coupling and Intramolecular Aza-Michael Addition Reaction Sequence Towards the Synthesis of 1,10b-epi-7-Deoxypancratistatins and Their Cytotoxicity Studies. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800830] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Kornienko A, Evidente A. Chemistry, biology, and medicinal potential of narciclasine and its congeners. Chem Rev 2008; 108:1982-2014. [PMID: 18489166 PMCID: PMC2856661 DOI: 10.1021/cr078198u] [Citation(s) in RCA: 262] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, 801 Leroy Place, New Mexico 87801, USA.
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Kornienko A, Evidente A. Chemistry, biology, and medicinal potential of narciclasine and its congeners. Chem Rev 2008; 108:1982-2014. [PMID: 18489166 DOI: 10.1002/chin.200840228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Affiliation(s)
- Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, 801 Leroy Place, New Mexico 87801, USA.
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Ingrassia L, Lefranc F, Mathieu V, Darro F, Kiss R. Amaryllidaceae isocarbostyril alkaloids and their derivatives as promising antitumor agents. Transl Oncol 2008; 1:1-13. [PMID: 18607503 PMCID: PMC2510759 DOI: 10.1593/tlo.08100] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 01/29/2008] [Accepted: 01/29/2008] [Indexed: 11/18/2022] Open
Abstract
This review covers the isolation, total synthesis, biologic activity, and more particularly the in vitro and in vivo antitumor activities of naturally occurring isocarbostyril alkaloids from the Amaryllidaceae family. Starting from these natural products, new derivatives have been synthesized to explore structure-activity relationships within the chemical class and to obtain potential candidates for preclinical development. This approach appears to be capable of providing novel promising anticancer agents.
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Affiliation(s)
| | - Florence Lefranc
- Service de Neurochirurgie, Hôpital Erasme, Université Libre de Bruxelles, Route de Lennik, 808, B-1070 Brussels, Belgium
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles, Campus de la Plaine CP205/1, Boulevard du Triomphe, B-1050 Brussels, Belgium
| | - Véronique Mathieu
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles, Campus de la Plaine CP205/1, Boulevard du Triomphe, B-1050 Brussels, Belgium
| | - Francis Darro
- Unibioscreen SA, Avenue Joseph Wybran, B-1070 Brussels, Belgium
| | - Robert Kiss
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles, Campus de la Plaine CP205/1, Boulevard du Triomphe, B-1050 Brussels, Belgium
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Pettit GR, Melody N, Herald DL, Knight JC, Chapuis JC. Antineoplastic agents. 550. Synthesis of 10b(s)-epipancratistatin from (+)-narciclasine. JOURNAL OF NATURAL PRODUCTS 2007; 70:417-22. [PMID: 17346078 DOI: 10.1021/np068046e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
By means of a five-step reaction sequence, narciclasine (2a), isolated from Narcissus sp., was converted to 10b(S)-epipancratistatin (3a) in 5.7% overall yield. The key step entailed a radical-initiated 10b,1 C-O cleavage employing tributyltin hydride to yield a B/C cis ring juncture (3b). Biological evaluation of 10b(S)-epipancratistatin (3a) provided evidence that antineoplastic activity was reduced by a factor of 10 when the B/C trans juncture was replaced with a B/C cis ring juncture.
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Affiliation(s)
- George R Pettit
- Cancer Research Institute and Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 872404, Tempe, AZ 85287-2404, USA.
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Rastogi SK, Kornienko A. A solution to the stereochemical problems posed by amaryllidaceae constituents using a highly syn-selective arylcuprate conjugate addition to γ-amino and γ-carbamato-α,β-enoates. TETRAHEDRON, ASYMMETRY 2006; 17:3170-3176. [PMID: 22791936 PMCID: PMC3393039 DOI: 10.1016/j.tetasy.2006.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Various substituted arylcuprates undergo stereocontrolled additions to L-serine-derived γamino- and γ-carbamato-α,β-enoates with high syn-selectivities. The stereochemical outcome of these reactions is fully consistent with the reductive elimination-based model proposed previously. This method is well suited for the preparation of a broad range of biologically active amaryllidaceae constituents and their aromatic analogues.
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Affiliation(s)
- Shiva K. Rastogi
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
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Pettit GR, Eastham SA, Melody N, Orr B, Herald DL, McGregor J, Knight JC, Doubek DL, Pettit GR, Garner LC, Bell JA. Isolation and structural modification of 7-deoxynarciclasine and 7-deoxy-trans-dihydronarciclasine. JOURNAL OF NATURAL PRODUCTS 2006; 69:7-13. [PMID: 16441059 DOI: 10.1021/np058068l] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
As an extension of structure-activity relationship studies of pancratistatin (1), various techniques were first evaluated for separating the mixtures of 7-deoxynarciclasine (2b) and 7-deoxy-trans-dihydronarciclasine (3a) isolated from Hymenocallis littoralis. An efficient solution for that otherwise difficult separation then allowed the lactam carbonyl group of protected (4c and 5c) alcohols 2b and 3a to be reduced employing lithium aluminum hydride. Cleavage (TBAF followed by H2SO4) of the silyl ester/acetonide protected 6a gave amine 8. X-ray crystal structure determinations were employed to confirm the structures of 3,4-acetonide-5-aza-6-deoxynarciclasine (6b), 5-aza-6-deoxynarciclasine (8a), and 5-aza-6-deoxy-trans-dihydronarciclasine (9a, 9b). Against the murine P388 lymphocytic leukemia and a panel of human cancer cell lines, the parent natural products, 7-deoxynarciclasine (2b) and 7-deoxy-trans-dihydronarciclasine (3a), were found to generally be more cancer cell growth inhibitory (GI50 0.1 to <0.01 microg/mL) than the compounds with structural modifications such as amine 8 by a factor of 10 or more. The trans ring juncture of isocarbostyril 3a proved to be an important modification of narciclasine (2a) for improving cancer cell growth inhibition in this series.
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Affiliation(s)
- George R Pettit
- Cancer Research Institute and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-2404, USA.
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Iwabuchi Y, Ogasawara K, Fujimura T, Shibuya M. An Enantio- and Diastereocontrolled Synthesis of (+)-7-Deoxy-trans-dihydronarciclasine. HETEROCYCLES 2005. [DOI: 10.3987/com-05-s(k)68] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Rinner U, Hillebrenner HL, Adams DR, Hudlicky T, Pettit GR. Synthesis and biological activity of some structural modifications of pancratistatin. Bioorg Med Chem Lett 2004; 14:2911-5. [PMID: 15125958 DOI: 10.1016/j.bmcl.2004.03.032] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2004] [Revised: 03/06/2004] [Accepted: 03/12/2004] [Indexed: 11/25/2022]
Abstract
Structurally modified derivatives of 7-deoxypancratistatin have been synthesized and evaluated in cancer cell line inhibition studies.
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Affiliation(s)
- Uwe Rinner
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
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Bouladoux N, Biligui S, Desportes-Livage I. A new monoclonal antibody enzyme-linked immunosorbent assay to measure in vitro multiplication of the microsporidium Encephalitozoon intestinalis. J Microbiol Methods 2003; 53:377-85. [PMID: 12689715 DOI: 10.1016/s0167-7012(02)00258-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Microsporidia are obligate intracellular eukaryotic parasites that infect a wide range of hosts, including invertebrates and vertebrates. Microsporidia have emerged as important opportunistic pathogens of humans with the onset of the AIDS pandemic. The potential impact of these infections in human pathology has required the development of antiparasitic strategies, based on the search for molecules having an effect on the development and/or the multiplication of microsporidia. This creates a demand for a simple and reliable in vitro technique for measuring the multiplication of microsporidia. We developed a new monoclonal antibody (MAb) enzyme-linked immunosorbent assay (ELISA) technique and measured the growth of Encephalitozoon intestinalis in an in vitro culturing system using this method. The monoclonal antibody is specific for a coat protein of E. intestinalis sporogonic stages produced in parasitophorous vacuole. An anti-mouse antibody labeled with peroxidase was used as conjugate. This ELISA is a suitable, specific and semiquantitative technique for measuring the spread of E. intestinalis. It is easy to perform and required 5 h from start to end. A good correlation was observed when the ELISA data were compared with the manual microscopic counts of parasitophorous vacuoles obtained after immunofluorescent assay (IFA). Moreover, the ELISA method proved more accurate than the immunofluorescent assay. In summary, the ELISA system described in this study provides a simple reliable assay for measuring the spread of microsporidia in vitro and may prove valuable for the screening of putative interesting antimicrosporidial compounds.
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Affiliation(s)
- Nicolas Bouladoux
- Inserm U511, Immunobiologie Cellulaire et Moléculaire des Infections Parasitaires, CHU Pitié-Salpêtrière, 91, boulevard de l'hôpital, 75643 Paris Cedex 13, France
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