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Zhang Z, Su B, Gong J, Tao H, Mai S. Rhodium-Catalyzed Difunctionalization of Alkenes Using Cyclic 1,3-Dicarbonyl-Derived Iodonium Ylides. Org Lett 2024; 26:1886-1890. [PMID: 38415611 DOI: 10.1021/acs.orglett.4c00186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Herein, we introduce an iodonium ylide strategy to achieve novel α-alkylation of cyclic 1,3-dicarbonyls through harnessing C(sp3)-Rh species generated from 5-exo-trig cyclization to provide rapid access to molecular hybridization of medically important isoindolin-1-ones and cyclic 1,3-dicarbonyls from readily available substrates. This approach features mild conditions, good yield, excellent functional group tolerance, and the simultaneous formation of two new chemical bonds and one stereogenic center. Moreover, the hydroxyl group of resulting product provides a good handle for downstream transformations. Importantly, we also demonstrate this strategy can be achieved in a one-pot manner. A C(sp3)-Rh complex was prepared and proved to be the key intermediate.
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Affiliation(s)
- Zhenwei Zhang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Borong Su
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jiajun Gong
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Huaming Tao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou 510515, China
| | - Shaoyu Mai
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou 510515, China
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2
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Jantrapirom J, Yongpanich P, Tummatorn J, Chainok K, Jiajaroen S, Thongsornkleeb C, Ruchirawat S. Selective electrophilic cyclization of ortho-carbonylarylacetylenols for the synthesis of cyclopenta[ a]naphthalenol and 2-phenylnaphthalen-1-ol analogs. Org Biomol Chem 2023; 21:8500-8515. [PMID: 37702619 DOI: 10.1039/d3ob01344h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
This work demonstrates a new method for the synthesis of cyclopenta[a]naphthalenol and 2-phenylnaphthalen-1-ol analogs via selective cyclization. ortho-Alkynylarylkenones were employed as the common substrates that could be prepared by Sonogashira coupling between 2-haloarylacetophenone and pent-4-yn-1-ol derivatives. These precursors were used without purification to construct 2-phenylnaphthalen-1-ol intermediates by treating with (+)-CSA under heating conditions. Selective cyclization occurred when the reaction was conducted in methyl trimethylacetate solvent which predominantly produced the 2-phenylnaphthalen-1-ol product through 6-endo-dig cyclization without elimination or the formation of cyclopenta[a]naphthalenol via shutting down the 5-exo-dig mode of cyclization. Switching the acid from a Brønsted acid to Bi(OTf)3 led to smooth reactions, providing the cyclopenta[a]naphthalenol products in moderate to good yields. Moreover, we also demonstrated the utilization of 2-phenylnaphthalen-1-ol to prepare naphthoquinone, which is an important core structure of bioactive and natural product compounds.
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Affiliation(s)
- Jantra Jantrapirom
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.
| | - Phornphan Yongpanich
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Jumreang Tummatorn
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Kittipong Chainok
- Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani 12121, Thailand
| | - Suwadee Jiajaroen
- Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani 12121, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
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Moraes TAPD, Dias FCR, Sarmento-Filha MJ, Camara CDA, Silva TMS, Torres SM, Souza IA, Pereira MDF, Morais DB, Silva Junior VA. Role of synthetical amynoquinone ethyl 2-(1,4-dioxo-1,4-dihydronaphthalen-2-ylamino) acetate in inhibition of Ehrlich's tumor. Pathol Res Pract 2023; 241:154272. [PMID: 36525850 DOI: 10.1016/j.prp.2022.154272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022]
Abstract
Quinones are naturally or synthetically occurring secondary metabolites that have various bio-dynamics, highlighting their antitumor potential. This has been explored through their selective cytotoxicity, and studies in medicinal chemistry about the relation between biological activity versus chemical structure may lead to the solution of the toxicity problems associated with quinones. In this context, the antitumor effect of a synthetic naphthoquinone, named Ethyl 2-(1,4-Dioxo-1,4-Dihydronaphthalen-2-Ylamino) Acetate, was tested using mice transplanted with Ehrlich ascitic tumor as an experimental model. The acute toxicity test was performed using 30 mice that received the aminoquinone at doses of 100, 200, 300, and 600 mg/kg. After evaluation of the clinical findings in the spontaneous activity tests, the LD50 calculation for the test substance showed low levels of toxicity at doses lower than 244.11 ± 23.29 mg/kg. Thus, three experimental groups were established, where animals transplanted with tumor cells received NaCl vehicle solution (control, n = 6), and the others were treated with 71.7 mg/kg of Methotrexate (n = 6) or 20 mg/kg of Aminoquinone (n = 6). All administrations were intraperitoneal, in a single dose. Three days after the implantation of the tumor cells the animals were weighed daily and evaluated for tumor biometry and development. The treatments occurred five days after the implantation of the tumor cells and were extended for 7 more days. At the end of the 12-day experimental period, all animals were euthanized for biochemical and histopathological analyses of the tumors and vital organs. The spontaneous activity test showed that the amount of responses associated with the nervous system tends to increase with the increase in dosage, highlighting the excitatory effect on the central nervous system in almost all dosages employed, followed by depressant activities on this system. There was a significant tumor reduction, both in animals treated with methotrexate (71.7 %) and in those treated with aminoquinone (91.6 %) in the control group. There was no significant difference in tumor volume between the animals treated with aminoquinone or methotrexate. The histopathological analysis revealed that in both treatments there were fewer mitoses in the tumor mass compared to the control group. However, there was apparent toxicity to the liver, heart, and left kidney in the treatment with methotrexate compared to aminoquinone. The significant capacity for tumor reduction presented by aminoquinone allows pointing it as a promising alternative for the development of a more efficient drug to control tumor development, being necessary for the development of new studies to deepen the knowledge about its mechanisms of action.
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Affiliation(s)
| | | | - Maria José Sarmento-Filha
- Programa de Pós-Graduação em Desenvolvimento e Inovação Tecnológica em Medicamentos, Universidade Federal do Rio Grande do Norte - UFRN, Natal, RN, Brazil
| | - Celso de Amorim Camara
- Departamento de Química, Universidade Federal Rural de Pernambuco - UFRPE, Recife, PE, Brazil
| | | | - Sandra Maria Torres
- Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco - UFRPE, Recife, PE, Brazil
| | - Ivone Antônia Souza
- Departamento de Antibióticos, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brazil
| | | | - Danielle Barbosa Morais
- Departamento de Morfologia, Universidade Federal do Rio Grande do Norte - UFRN, Natal, RN, Brazil
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Antioxidant and Anticancer Potential of Bioactive Compounds from Rhinacanthus nasutus Cell Suspension Culture. PLANTS 2022; 11:plants11151994. [PMID: 35956472 PMCID: PMC9370634 DOI: 10.3390/plants11151994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 12/02/2022]
Abstract
The potential benefits of natural plant extracts have received attention in recent years, encouraging the development of natural products that effectively treat various diseases. This is the first report on establishing callus and cell suspension cultures of Rhinacanthus nasutus (L.) Kurz. A yellow friable callus was successfully induced from in vitro leaf explants on Murashige and Skoog medium supplemented with 1 mg/L 2,4-dichlorophenoxyacetic acid and 1 mg/L 1-naphthalene acetic acid. A selected friable callus line was used to establish the cell suspension culture with the same medium. The antioxidant assays showed that the leaf- and ethanolic-suspension-cultured cell (SCC) extracts exhibited high antioxidant potential. In addition, the in vitro cytotoxicity revealed by the MTT assay demonstrated potent antiproliferative effects against the oral cancer cell lines ORL-48 and ORL-136 in a dose-dependent manner. Several groups of compounds, including terpenoids, phenolics, flavonoids, quinones, and stilbenes, were identified by UHPLC–QToF–MS, with the same compounds detected in leaf and SCC extracts, including austroinulin, lucidenic acid, esculetin, embelin, and quercetin 3-(2″-p-hydroxybenzoyl-4″-p-coumarylrhamnoside). The present study suggests the value of further investigations for phytochemical production using R. nasutus cell suspension culture.
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Prasanna Kumari S, Philip Anthony S, Selva Ganesan S. One-pot synthesis of indole-fused nitrogen heterocycles via the direct C(sp 2)–H functionalization of naphthoquinones; accessibility for deep red emitting materials. NEW J CHEM 2022. [DOI: 10.1039/d2nj02024f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient one-pot, two-step methodology was developed for the transformation of readily available planar naphthoquinone derivatives into structurally complex indole-fused nitrogen heterocycles under aerobic conditions.
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Affiliation(s)
- Subramaniyan Prasanna Kumari
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
| | - Savarimuthu Philip Anthony
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
| | - Subramaniapillai Selva Ganesan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
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Singh AP, Sharma A. Structural Insights and Pharmaceutical Relevance of Plumbagin in Parasitic Disorders: A Comprehensive Review. RECENT ADVANCES IN ANTI-INFECTIVE DRUG DISCOVERY 2022; 17:187-198. [PMID: 36065920 DOI: 10.2174/2772434417666220905121531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/15/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
Recently, natural products have been became the center of attraction for the scientific society and exploration of their biologically abilities is proceeding continuously. In search for novel antiparasitic agents with an objective of protecting humans from parasitic infections, the present work was focused on naphthoquinones possessing antiparasitic activity. Among naphthoquinones, plumbagin is one of the secondary metabolites exhibiting diverse biological properties such as antibacterial, antimalarial, antiinflammatory, insecticidal and antiparasitic. Plumbagin is reported to have antischistosomiasis, anti-haemonchosis, anti-fascioliasis, antiotoacariasis, anti-leishmaniasis, antimalaria, antiallergic and anthelmintic activities. Besides, various methods of extraction of plumbagin from different methods, their effectiveness against different parasites, and the structure-activity relationship reported by different researchers. This work highlight on recent advancements in the phytochemistry of plumbagin, studies associated with various biological activities. The structure-activity relationship studies have also been summarized. To conclude, present review could be beneficial for the scientific community to get better insight into medicinal research of plumbagin and may provide a new horizon for the rational design of plumbagin based compounds.
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Affiliation(s)
| | - Alok Sharma
- ISF College of Pharmacy, Moga, 142001, Punjab, India
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Shen CC, Afraj SN, Hung CC, Barve BD, Kuo LMY, Lin ZH, Ho HO, Kuo YH. Synthesis, biological evaluation, and correlation of cytotoxicity versus redox potential of 1,4-naphthoquinone derivatives. Bioorg Med Chem Lett 2021; 41:127976. [PMID: 33766765 DOI: 10.1016/j.bmcl.2021.127976] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 03/11/2021] [Accepted: 03/14/2021] [Indexed: 11/19/2022]
Abstract
A series of 1,4-naphthoquinone derivatives of lawsone (1), 6-hydroxy-1,4-naphthoquinone (2), and juglone (3) were synthesized by alkylation, acylation, and sulfonylation reactions. The yields of lawsone derivatives 1a-1k (type A), 6-hydroxy-1,4-naphthoquinone derivatives 2a-2j (type B), and juglone derivatives 3a-3h (type C) were 52-99%, 53-96%, and 28-95%, respectively. All compounds were tested in vitro for the cytotoxicity against human oral epidermoid carcinoma (KB) and cervix epithelioid carcinoma (HeLa) cells and their structure-activity relationship was studied. Compound 3c was found to be most potent in KB cell line (IC50 = 1.39 µM). Some compounds were evaluated for DNA topoisomerase I inhibition. Compounds 2c, 3, 3a, and 3d showed topoisomerase inhibition activity with IC50 values of 8.3-91 µM. Standard redox potentials (E°) of all naphthoquinones in phosphate buffer at pH 7.2 were examined by means of cyclic voltammetry. A definite correlation has been found between the redox potentials and inhibitory effects of type A compounds.
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Affiliation(s)
- Chien-Chang Shen
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC
| | - Shakil N Afraj
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC
| | - Chia-Cheng Hung
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC
| | - Balaji D Barve
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC
| | - Li-Ming Yang Kuo
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC
| | - Zhi-Hu Lin
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC
| | - Hisu-O Ho
- School of Pharmacy, Taipei Medical University, Taipei 110, Taiwan, ROC
| | - Yao-Haur Kuo
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan, ROC; Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan, ROC; Ph.D. Program in Clinical Drug Development of Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan, ROC.
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Rhinacanthus nasutus "Tea" Infusions and the Medicinal Benefits of the Constituent Phytochemicals. Nutrients 2020; 12:nu12123776. [PMID: 33317106 PMCID: PMC7763345 DOI: 10.3390/nu12123776] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 12/25/2022] Open
Abstract
Rhinacanthus nasutus (L.) Kurz (Acanthaceae) (Rn) is an herbaceous shrub native to Thailand and much of South and Southeast Asia. It has several synonyms and local or common names. The root of Rn is used in Thai traditional medicine to treat snake bites, and the roots and/or leaves can be made into a balm and applied to the skin for the treatment of skin infections such as ringworm, or they may be brewed to form an infusion for the treatment of inflammatory disorders. Rn leaves are available to the public for purchase in the form of “tea bags” as a natural herbal remedy for a long list of disorders, including diabetes, skin diseases (antifungal, ringworm, eczema, scurf, herpes), gastritis, raised blood pressure, improved blood circulation, early-stage tuberculosis antitumor activity, and as an antipyretic. There have been many studies investigating the roles of Rn or compounds isolated from the herb regarding diseases such as Alzheimer’s and other neurodegenerative diseases, cancer, diabetes and infection with bacteria, fungi or viruses. There have, however, been no clinical trials to confirm the efficacy of Rn in the treatment of any of these disorders, and the safety of these teas over long periods of consumption has never been tested. This review assesses the recent research into the role of Rn and its constituent compounds in a range of diseases.
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Córdova-Rivas S, Araujo-Huitrado JG, Rivera-Avalos E, Escalante-García IL, Durón-Torres SM, López-Hernández Y, Hernández-López H, López L, de Loera D, López JA. Differential Proliferation Effect of the Newly Synthesized Valine, Tyrosine and Tryptophan-Naphthoquinones in Immortal and Tumorigenic Cervical Cell Lines. Molecules 2020; 25:molecules25092058. [PMID: 32354078 PMCID: PMC7248809 DOI: 10.3390/molecules25092058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/17/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022] Open
Abstract
We previously showed that microwave assisted synthesis is the best method for the synthesis of naphthoquinone amino acid and chloride-naphthoquinone amino acid derivatives by a complete evaluation of reaction conditions such as stoichiometry, bases, and pH influence. Following the same strategy, we synthesized chloride and non-chloride tyrosine, valine, and tryptophan-naphthoquinones achieving 85–95%, 80–92%, and 91–95% yields, respectively. The cyclic voltammetry profiles showed that both series of naphthoquinone amino acid derivatives mainly display one redox reaction process. Overall, chloride naphthoquinone amino acid derivatives exhibited redox potential values (E1/2) more positive than non-chloride compounds. The six newly synthesized compounds were tested in HPV positive and negative as well as in immortal and tumorigenic cell lines to observe the effects in different cellular context simulating precancerous and cancerous status. A dose-response was achieved to determine the IC50 of six newly synthesized compounds in SiHa (Tumorigenic and HPV16 positive), CaLo (Tumorigenic and HPV18 positive), C33-A (Tumorigenic and HPV negative) and HaCaT (Keratinocytes immortal HPV negative) cell lines. Non-chloride tryptophan-naphthoquinone (3c) and chloride tyrosine-naphthoquine (4a) effects were more potent in tumorigenic SiHa, CaLo, and C33-A cells with respect to non-tumorigenic HaCaT cells. Interestingly, there seems to be a differential effect in non-chloride and chloride naphthoquinone amino acid derivatives in tumorigenic versus non tumorigenic cells. Considering all naphthoquinone amino acid derivatives that our group synthesized, it seems that hydrophobic and aromatic amino acids have the greatest effect on cell proliferation inhibition. These results show promising compounds for cervical cancer treatment.
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Affiliation(s)
- Sergio Córdova-Rivas
- Laboratorio de microRNAs y Cáncer, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas 98068, Mexico
| | - Jorge Gustavo Araujo-Huitrado
- Laboratorio de microRNAs y Cáncer, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas 98068, Mexico
| | - Ernesto Rivera-Avalos
- School of Chemistry, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico
| | | | - Sergio M. Durón-Torres
- Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Zacatecas 98160, Mexico
| | - Yamilé López-Hernández
- CONACYT, Laboratorio de Metabolómica y Proteómica, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas 98068, Mexico
| | - Hiram Hernández-López
- Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Zacatecas 98160, Mexico
| | - Lluvia López
- Instituto de Investigación de Zonas Desérticas, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78377, Mexico
| | - Denisse de Loera
- School of Chemistry, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico
- Correspondence: (D.d.L.); (J.A.L.); Tel.: +52-444-826-2300 x6415 (D.d.L.); +52-492-149-2648 (J.A.L.)
| | - Jesús Adrián López
- Laboratorio de microRNAs y Cáncer, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas 98068, Mexico
- Correspondence: (D.d.L.); (J.A.L.); Tel.: +52-444-826-2300 x6415 (D.d.L.); +52-492-149-2648 (J.A.L.)
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Annisa R, Hendradi E, Yuwono M. Analysis of 1,4 naphthoquinone in the Indonesian medical plant from extract Eleutherine palmifolia (L.) Merr by UHPLC. ACTA ACUST UNITED AC 2020. [DOI: 10.1088/1755-1315/456/1/012020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mohamady S, Gibriel AA, Ahmed MS, Hendy MS, Naguib BH. Design and novel synthetic approach supported with molecular docking and biological evidence for naphthoquinone-hydrazinotriazolothiadiazine analogs as potential anticancer inhibiting topoisomerase-IIB. Bioorg Chem 2020; 96:103641. [DOI: 10.1016/j.bioorg.2020.103641] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/23/2020] [Accepted: 01/28/2020] [Indexed: 01/16/2023]
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Synthesis of Amino Acid-Naphthoquinones and In Vitro Studies on Cervical and Breast Cell Lines. Molecules 2019; 24:molecules24234285. [PMID: 31775253 PMCID: PMC6930466 DOI: 10.3390/molecules24234285] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/15/2019] [Accepted: 11/18/2019] [Indexed: 01/01/2023] Open
Abstract
We performed an extensive analysis about the reaction conditions of the 1,4-Michael addition of amino acids to 1,4-naphthoquinone and substitution to 2,3-dichloronaphthoquinone, and a complete evaluation of stoichiometry, use of different bases, and the pH influence was performed. We were able to show that microwave-assisted synthesis is the best method for the synthesis of naphthoquinone–amino acid and chloride–naphthoquinone–amino acid derivatives with 79–91% and 78–91% yields, respectively. The cyclic voltammetry profiles showed that both series of naphthoquinone–amino acid derivatives mainly display one quasi-reversible redox reaction process. Interestingly, it was shown that naphthoquinone derivatives possess a selective antitumorigenic activity against cervix cancer cell lines and chloride–naphthoquinone–amino acid derivatives against breast cancer cell lines. Furthermore, the newly synthetized compounds with asparagine–naphthoquinones (3e and 4e) inhibited ~85% of SiHa cell proliferation. These results show promising compounds for specific cervical and breast cancer treatment.
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Boueroy P, Saensa‑Ard S, Siripong P, Kanthawong S, Hahnvajanawong C. Rhinacanthin-C Extracted from Rhinacanthus nasutus (L.) Inhibits Cholangiocarcinoma Cell Migration and Invasion by Decreasing MMP-2, uPA, FAK and MAPK Pathways. Asian Pac J Cancer Prev 2018; 19:3605-3613. [PMID: 30583689 PMCID: PMC6428551 DOI: 10.31557/apjcp.2018.19.12.3605] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cholangiocarcinoma is a malignant tumor with high metastatic and mortality rates. We investigated the effects of rhinacanthin-C on cell proliferation, migration, invasion and the expression of proteins regulating cancer cell invasion-regulated proteins in a cholangiocarcinoma (KKU-M156) cell line. Cytotoxicity of rhinacanthin-C was determined by the SRB assay. Using wound-migration, chamber-migration and chamber-invasion assays, we assessed the effects of rhinacanthin-C against KKU-M156 cells. The activities of matrix metalloproteinases 2 and 9 (MMP-2, MMP-9) and urokinase-type plasminogen activator (uPA) were determined using gelatinase and uPA zymography assays. The expression of invasion-regulated proteins was investigated using western-blot analysis. After treatment with rhinacanthin-C, KKU-M156 cells exhibited antiproliferative effects in a dose-dependent manner with greater efficacy than in Vero cells: IC50 values were 1.50 and 2.37 µM, respectively. Rhinacanthin-C significantly inhibited cell migration and invasion of KKU-M156 cells in a dose-dependent manner. Consistent with this observation, treatment with rhinacanthin-C was associated with a decrease in the expression levels of FAK, p-FAK, MMP-2, and a decrease in the levels of p38-, JNK1/2- and ERK1/2-MAPK pathways as well as inhibiting NF-κB/p65 expression and translocation of NF-κB/p65 to the nucleus. We have shown for the first time that the anti-metastatic effects of rhinacanthin-C on KKU-M156 cells are mediated via inhibition of the expression of invasion-regulated proteins. Rhinacanthin-C may deserve consideration as a potential agent for the treatment of cholangiocarcinoma.
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Affiliation(s)
- Parichart Boueroy
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Center of Excellence for Innovation in Chemistry, Cholangiocarcinoma Research Institute, Cholangiocarcinoma Screening and Care Program (CASCAP), Faculty of Medicine, Khon Kaen University, Khon Kaen,Thailand. ,
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Makar S, Saha T, Singh SK. Naphthalene, a versatile platform in medicinal chemistry: Sky-high perspective. Eur J Med Chem 2018; 161:252-276. [PMID: 30366253 DOI: 10.1016/j.ejmech.2018.10.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 02/01/2023]
Abstract
Naphthalene, a cytotoxic moiety, is an extensively explored aromatic conjugated system with applications in various pathophysiological conditions viz. anticancer, antimicrobial, anti-inflammatory, antiviral, antitubercular, antihypertensive, antidiabetic, anti-neurodegenerative, antipsychotic, anticonvulsant, antidepressant. Naphthalene epoxides and naphthoquinones are most reactive metabolites of naphthalene and are responsible for the covalent interaction with cysteine amino acid of cellular proteins for cytotoxic nature. Many naphthalene derived bioactive phytoconstituents are present in nature including podophyllotoxins (Etoposide, teniposide), bis-ANS 82, Rifampicin, Justiprocumin A, B, Patentiflorin A. The naphthalene-based molecules, viz. Naphyrone, tolnaftate, naftifine, nafcillin, terbinafine, propranolol, nabumetone, nafimidone, naproxen, duloxetine, lasofoxifene, bedaquiline etc. have also been approved by FDA and are being marketed as therapeutics. Thus, the naphthalene scaffold emerges as an important building block in drug discovery owing to its broad spectrum of biological activities through varying structural modifications. This review incorporates the pharmacological aspects of different types of chemically modified naphthalene-based molecules along with their activity profile. This compiled information may serve as a benchmark for the alteration of existing ligands to design novel potent molecules with lesser side effects.
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Affiliation(s)
- Subhajit Makar
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Tanmay Saha
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Sushil K Singh
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India.
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15
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Sittikul P, Songtawee N, Kongkathip N, Boonyalai N. In vitro and in silico studies of naphthoquinones and peptidomimetics toward Plasmodium falciparum plasmepsin V. Biochimie 2018; 152:159-173. [PMID: 30103899 DOI: 10.1016/j.biochi.2018.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/04/2018] [Indexed: 12/16/2022]
Abstract
Plasmodium proteases play both regulatory and effector roles in essential biological processes in this important pathogen and have long been investigated as drug targets. Plasmepsin V from P. falciparum (PfPMV) is an essential protease that processes proteins for export into the host erythrocyte and is a focus of ongoing drug development efforts. In the present study, recombinant protein production, inhibition assays, binding studies as well as molecular docking and molecular dynamics simulation studies were used to investigate the mode of binding of a PEXEL-based peptidomimetic and naphthoquinone compounds to PfPMV. Consistent with our previous study, refolded PfPMVs were produced with functional characteristics similar to the soluble counterpart. Naphthoquinone compounds inhibited PfPMV activity by 50% at 50 μM but did not affect pepsin activity. The IC50 values of compounds 31 and 37 against PfPMV were 22.25 and 68.94 μM, respectively. Molecular dynamics simulations revealed that PEXEL peptide interacted with PfPMV active site residues via electrostatic interactions while naphthoquinone binding preferred van der Waal interactions. P1'-Ser of the PfEMP2 substrate formed an additional H-bond with Asp365 promoting the catalytic efficiency. Additionally, the effect of metal ions on the secondary structure of PfPMV was examined. Our results confirmed that Hg2+ ions reversibly induced the changes in secondary structure of the protein whereas Fe3+ ions induced irreversibly. No change was observed in the presence of Ca2+ ions. Overall, the results here suggested that naphthoquinone derivatives may represent another source of antimalarial inhibitors targeting aspartic proteases but further chemical modifications are required.
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Affiliation(s)
- Pichamon Sittikul
- Department of Biochemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand; Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Napat Songtawee
- Department of Clinical Chemistry, Faculty of Medical Technology, Mahidol University, Phuttamonthon, Nakhon Pathom, 73170, Thailand
| | - Ngampong Kongkathip
- Natural Product and Organic Synthesis Research Unit (NPOS), Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
| | - Nonlawat Boonyalai
- Department of Biochemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand.
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16
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Investigation of chemical reactivity of 2-alkoxy-1,4-naphthoquinones and their anticancer activity. Bioorg Med Chem Lett 2018; 28:2023-2028. [DOI: 10.1016/j.bmcl.2018.04.060] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/20/2018] [Accepted: 04/25/2018] [Indexed: 11/27/2022]
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17
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Shang XF, Liu YQ, Guo X, Miao XL, Chen C, Zhang JX, Xu XS, Yang GZ, Yang CJ, Li JC, Zhang XS. Application of Sustainable Natural Resources in Agriculture: Acaricidal and Enzyme Inhibitory Activities of Naphthoquinones and Their Analogs against Psoroptes cuniculi. Sci Rep 2018; 8:1609. [PMID: 29371639 PMCID: PMC5785474 DOI: 10.1038/s41598-018-19964-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/10/2018] [Indexed: 12/02/2022] Open
Abstract
As important secondary plant metabolites, naphthoquinones exhibit a wide range of biological activities. However, their potential as sustainable alternatives to synthetic acaricides has not been studied. This study for the first time investigates the acaricidal activity of naphthoquinones against Psoroptes cuniculi in vitro. Furthermore, the in vivo activity, the skin irritation effects, the cytotoxicity and the inhibitory activities against mite acetylcholinesterase (AChE) and glutathione S-transferase (GST) of the two compounds that displayed the best insecticidal activity in vitro were evaluated. Among fourteen naphthoquinones and their analogs, juglone and plumbagin were observed to possess the strongest acaricidal activities against P. cuniculi with LC50 values of 20.53 ppm and 17.96 ppm, respectively, at 24 h. After three treatments, these two chemicals completely cured naturally infested rabbits in vivo within 15 days, and no skin irritation was found in any of the treated rabbits. Compared to plumbagin, juglone presented no or weak cytotoxicity against HL-7702 cells. Moreover, these two chemicals significantly inhibited AChE and GST activity. These results indicate that juglone has promising toxicity against P. cuniculi, is safe for both humans and animals at certain doses, and could be used as a potential alternative bio-acaricide for controlling the development of psoroptic mange in agricultural applications.
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Affiliation(s)
- Xiao-Fei Shang
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, 335 Jiangouyan, Lanzhou, 730050, P. R. China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China.
| | - Xiao Guo
- Tibetan Medicine Research Center of Qinghai University, Qinghai University Tibetan Medical College, Qinghai University, 251 Ningda Road, Xining, 810016, P. R. China
| | - Xiao-Lou Miao
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, 335 Jiangouyan, Lanzhou, 730050, P. R. China
| | - Cheng Chen
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Jun-Xiang Zhang
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Xiao-Shan Xu
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Guan-Zhou Yang
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Cheng-Jie Yang
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Jun-Cai Li
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
| | - Xiao-Shuai Zhang
- School of Pharmacy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China
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18
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Zhou D, Yu X, Zhang J, Wang W, Xie H. Organocatalytic Asymmetric Formal [4 + 2] Cycloaddition of in Situ Oxidation-Generated ortho-Quinone Methides and Aldehydes. Org Lett 2017; 20:174-177. [DOI: 10.1021/acs.orglett.7b03539] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ding Zhou
- State
Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory
of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xueting Yu
- State
Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory
of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Jian Zhang
- State
Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory
of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Wang
- State
Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory
of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- Department
of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Hexin Xie
- State
Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory
of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
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19
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Kim DJ, Choi CK, Lee CS, Park MH, Tian X, Kim ND, Lee KI, Choi JK, Ahn JH, Shin EY, Shin I, Kim EG. Small molecules that allosterically inhibit p21-activated kinase activity by binding to the regulatory p21-binding domain. Exp Mol Med 2016; 48:e229. [PMID: 27126178 PMCID: PMC4855275 DOI: 10.1038/emm.2016.13] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/29/2015] [Accepted: 12/30/2015] [Indexed: 11/09/2022] Open
Abstract
p21-activated kinases (PAKs) are key regulators of actin dynamics, cell proliferation and cell survival. Deregulation of PAK activity contributes to the pathogenesis of various human diseases, including cancer and neurological disorders. Using an ELISA-based screening protocol, we identified naphtho(hydro)quinone-based small molecules that allosterically inhibit PAK activity. These molecules interfere with the interactions between the p21-binding domain (PBD) of PAK1 and Rho GTPases by binding to the PBD. Importantly, they inhibit the activity of full-length PAKs and are selective for PAK1 and PAK3 in vitro and in living cells. These compounds may potentially be useful for determining the details of the PAK signaling pathway and may also be used as lead molecules in the development of more selective and potent PAK inhibitors.
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Affiliation(s)
- Duk-Joong Kim
- Research Institute and Quality Management Team, NanoPharm Corp., Jincheon-gun, Korea
| | - Chang-Ki Choi
- Division of Planning and Research, Korea National Institute of Health, KCDC, Osong Health Technology Administration Complex, Cheongju, Korea
| | - Chan-Soo Lee
- Livestock Products Standard Division, Food Standard Planning Office, Food Safety Policy Bureau, Ministry of Food and Drug Safety, Osong Health Technology Administration Complex, Cheongju, Korea
| | - Mee-Hee Park
- Division of Medical Science Knowledge Management, Center of Biomedical Sciences, Korea National Institutes of Health, Osong Health Technology Administration Complex, Cheongju, Korea
| | - Xizhe Tian
- Department of Chemistry, Yanbian University, Yanji, China
| | - Nam Doo Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Korea
| | - Kee-In Lee
- Green Chemistry Division, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Joong-Kwon Choi
- Green Chemistry Division, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Jin Hee Ahn
- Green Chemistry Division, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Eun-Young Shin
- Department of Biochemistry, College of Medicine and Medical Research Center, Chungbuk National University, Cheongju, Korea
| | - Injae Shin
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul, Korea
| | - Eung-Gook Kim
- Department of Biochemistry, College of Medicine and Medical Research Center, Chungbuk National University, Cheongju, Korea
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20
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Devari S, Shah BA. Visible light-promoted C–H functionalization of ethers and electron-deficient arenes. Chem Commun (Camb) 2016; 52:1490-3. [DOI: 10.1039/c5cc08817h] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photocatalyst-free visible-light-mediated C–H arylation of ethers via C(Sp2)–C(Sp3) C–H functionalization involving hydrogen atom transfer (HAT) pathway.
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Affiliation(s)
- Shekaraiah Devari
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
- Natural Product Microbes
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
- Natural Product Microbes
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21
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de Moraes TAP, Filha MJS, Camara CA, Silva TMS, Soares BM, Bomfim IS, Pessoa C, Ximenes GC, Silva Junior VA. Synthesis and cytotoxic evaluation of a series of 2-amino-naphthoquinones against human cancer cells. Molecules 2014; 19:13188-99. [PMID: 25162959 PMCID: PMC6271085 DOI: 10.3390/molecules190913188] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 08/22/2014] [Accepted: 08/22/2014] [Indexed: 11/16/2022] Open
Abstract
The cytotoxicity of a series of aminonaphthoquinones resulting from the reaction of suitable aminoacids with 1,4-naphthoquinone was assayed against SF-295 (glioblastoma), MDAMB-435 (breast), HCT-8 (colon), HCT-116 (colon), HL-60 (leukemia), OVCAR-8 (ovarian), NCI-H358M (bronchoalveolar lung carcinoma) and PC3-M (prostate) cancer cells and also against PBMC (peripheral blood mononuclear cells). The results demonstrated that all the synthetic aminonaphthoquinones had relevant cytotoxic activity against all human cancer lines used in this experiment. Five of the compounds showed high cytotoxicity and selectivity against all cancer cell lines tested (IC50 = 0.49 to 3.89 µg·mL−1). The title compounds were less toxic to PBMC, since IC50 was 1.5 to eighteen times higher (IC50 = 5.51 to 17.61 µg·mL−1) than values shown by tumour cell lines. The mechanism of cell growth inhibition and structure–activity relationships remains as a target for future investigations.
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Affiliation(s)
- Thiago A P de Moraes
- Departamento de Morfologia e Fisiologia Animal-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
| | - Maria J S Filha
- Departamento de Ciencias Moleculares-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
| | - Celso A Camara
- Departamento de Ciencias Moleculares-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
| | - Tania M S Silva
- Departamento de Ciencias Moleculares-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
| | - Bruno M Soares
- Departamento de Farmacologia e Fisiologia, Universidade Federal do Ceará-UFC, Rua Coronel Nunes de Melo, 1127, Rodolfo Teófilo, CP 3157, Fortaleza, Ceará CE 60430-270, Brazil.
| | - Igor S Bomfim
- Departamento de Farmacologia e Fisiologia, Universidade Federal do Ceará-UFC, Rua Coronel Nunes de Melo, 1127, Rodolfo Teófilo, CP 3157, Fortaleza, Ceará CE 60430-270, Brazil.
| | - Claudia Pessoa
- Departamento de Morfologia e Fisiologia Animal-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
| | - George C Ximenes
- Departamento de Morfologia e Fisiologia Animal-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
| | - Valdemiro A Silva Junior
- Departamento de Morfologia e Fisiologia Animal-UFRPE, Universidade Federal Rural de Pernambuco-UFRPE, Rua Dom Manoel de, s/n, Dois Irmãos, Recife, Pernambuco PE 52171-900, Brazil.
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22
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Brötz E, Herrmann J, Wiese J, Zinecker H, Maier A, Kelter G, Imhoff JF, Müller R, Paululat T. Synthesis and Cytotoxic Activity of a Small Naphthoquinone Library: First Synthesis of Juglonbutin. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402272] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Synthesis and Anticancer Evaluation of Naphthoquinone Esters with 2′-Cyclopentyl and 2′-Cyclohexyl Substituents. Biosci Biotechnol Biochem 2014; 74:1205-14. [DOI: 10.1271/bbb.90946] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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A One-pot, Efficient Synthesis of Polyfunctionalized Pyrido[2,3-d]pyrimidines and Uncyclized Adducts by Aldehydes, 1,3-Dicarbonyl Compounds, and 6-Aminouracils. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1704] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Nasiri HR, Madej MG, Panisch R, Lafontaine M, Bats JW, Lancaster CRD, Schwalbe H. Design, Synthesis, and Biological Testing of Novel Naphthoquinones as Substrate-Based Inhibitors of the Quinol/Fumarate Reductase from Wolinella succinogenes. J Med Chem 2013; 56:9530-41. [DOI: 10.1021/jm400978u] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hamid Reza Nasiri
- Institute
of Organic Chemistry and Chemical Biology, Center for Biomolecular
Magnetic Resonance, Johann Wolfgang Goethe-University Frankfurt, Max-von-Laue-Straße
7, D-60438 Frankfurt
am Main, Germany
| | - M. Gregor Madej
- Department of
Molecular Membrane Biology, Cluster of Excellence Frankfurt “Macromolecular
Complexes,” Max Planck Institute of Biophysics, Max-von-Laue-Straße 3, D-60438 Frankfurt am Main, Germany
| | - Robin Panisch
- Institute
of Inorganic and Analytical Chemistry, Johann Wolfgang Goethe-University Frankfurt, Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany
| | - Michael Lafontaine
- Department
of Structural Biology, Center of Human and Molecular Biology, Faculty
of Medicine, Saarland University, Building 60, D-66421 Homburg, Germany
| | - Jan W. Bats
- Institute
of Organic Chemistry and Chemical Biology, Center for Biomolecular
Magnetic Resonance, Johann Wolfgang Goethe-University Frankfurt, Max-von-Laue-Straße
7, D-60438 Frankfurt
am Main, Germany
| | - C. Roy D. Lancaster
- Department of
Molecular Membrane Biology, Cluster of Excellence Frankfurt “Macromolecular
Complexes,” Max Planck Institute of Biophysics, Max-von-Laue-Straße 3, D-60438 Frankfurt am Main, Germany
- Department
of Structural Biology, Center of Human and Molecular Biology, Faculty
of Medicine, Saarland University, Building 60, D-66421 Homburg, Germany
| | - Harald Schwalbe
- Institute
of Organic Chemistry and Chemical Biology, Center for Biomolecular
Magnetic Resonance, Johann Wolfgang Goethe-University Frankfurt, Max-von-Laue-Straße
7, D-60438 Frankfurt
am Main, Germany
- German Cancer Consortium
(DKTK), 69120 Heidelberg, Germany
- German Cancer
Research Center (DKFZ), 69120 Heidelberg, Germany
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26
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Cheruvathur MK, Thomas TD. Shoot organogenesis from root-derived callus of Rhinacanthus nasutus (L.) Kurz. and assessment of clonal fidelity of micropropagted plants using RAPD analysis. Appl Biochem Biotechnol 2013; 172:1172-82. [PMID: 24146370 DOI: 10.1007/s12010-013-0598-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 10/08/2013] [Indexed: 12/01/2022]
Abstract
An efficient regeneration system was established for an ethnomedicinal shrub Rhinacanthus nasutus from root-derived callus organogenesis. The root segments were cultured on MS medium supplemented with various concentrations of Kn (1.0-4.0 μM) alone or in combination with IBA (0.2-0.6 μM) or 2, 4-D (0.5-1.5 μM). The optimum frequency (94%) of callus induction was recorded on MS medium supplemented with 3.0 μM Kn and 0.4 μM IBA. For shoot regeneration from callus, MS medium supplemented with different concentrations (1.0-7.0 μM) of BA or TDZ alone or in combination with NAA (0.2-1.0 μm) was employed. The highest frequency of shoot regeneration (91%) and mean number of shoots (28.3) were observed on MS medium supplemented with 5.0 μM BA and 0.7 μM NAA. The shoots were excised and cultured on MS medium with 4.0 μM IBA produced 3.4 roots per shoot in 88% cultures. Of the 65 plants transferred to soil 54 survived (83%). The plants were transferred to field after successful hardening. RAPD analysis of the regenerated plants showed high similarity with the mother plant.
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Affiliation(s)
- Meena K Cheruvathur
- Post Graduate and Research Department of Botany, St. Thomas College, Pala, Arunapuram (P.O), 686574, Kottayam, Kerala, India
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27
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Khaddour Z, Eleya N, Akrawi OA, Hamdy AM, Patonay T, Villinger A, Langer P. Chemoselective Suzuki–Miyaura cross-coupling reactions of methyl 4-bromo-3-(trifluoromethylsulfonyloxy)-2-naphthoate. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Tandon VK, Kumar S. Recent development on naphthoquinone derivatives and their therapeutic applications as anticancer agents. Expert Opin Ther Pat 2013; 23:1087-108. [DOI: 10.1517/13543776.2013.798303] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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29
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Wellington KW, Gordon GER, Ndlovu LA, Steenkamp P. Laccase-Catalyzed CS and CC Coupling for a One-Pot Synthesis of 1,4-Naphthoquinone Sulfides and 1,4-Naphthoquinone Sulfide Dimers. ChemCatChem 2013. [DOI: 10.1002/cctc.201200606] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Synthesis of novel naphthoquinone aliphatic amides and esters and their anticancer evaluation. Eur J Med Chem 2013; 60:271-84. [DOI: 10.1016/j.ejmech.2012.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 11/16/2012] [Accepted: 12/05/2012] [Indexed: 11/23/2022]
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31
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Siripong P, Yahuafai J, Piyaviriyakul S, Kanokmedhakul K, Koide H, Ishii T, Shimizu K, Ruchirawat S, Oku N. Inhibitory effect of liposomal rhinacanthin-N isolated from Rhinacanthus nasutus on pulmonary metastasis in mice. Biol Pharm Bull 2012; 35:1197-200. [PMID: 22791173 DOI: 10.1248/bpb.b12-00244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We previously observed that rhinacanthins, which are the main naphthoquinone esters isolated from the roots of a Thai medicinal plant, Rhinacanthus nasutus KURZ. (family Acanthaceae), suppress the growth of Meth-A sarcoma in the tumor-bearing mice and that rhinacanthin-N has the strongest antitumor activity among these naphthoquinone esters tested. In the present study, we investigated the effect of rhinacanthin-N on pulmonary metastasis induced by B16F10 melanoma cells in mice. C57BL/6 male mice were injected intravenously with B16F10 melanoma cells, and liposomal rhinacanthin-N was administered intraperitoneally from day 1 to 7 after tumor implantation. Liposomes were used to formulate an injectable form of the hydrophobic agent. Treatment of the mice with 5 or 10 mg/kg/d of liposomal rhinacanthin-N significantly inhibited the pulmonary metastatic colonization of the melanoma cells. Based on these data, our findings demonstrate that rhinacanthin-N possesses antimetastatic efficacy, which may make it a lead compound for the development of a new anticancer drug for use in cancer chemotherapy.
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Affiliation(s)
- Pongpun Siripong
- Natural Products Research Section, Research Division, National Cancer Institute, Bangkok 10400, Thailand.
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Boonyalai N, Sittikul P, Pradidphol N, Kongkathip N. Biophysical and molecular docking studies of naphthoquinone derivatives on the ATPase domain of human topoisomerase II. Biomed Pharmacother 2012; 67:122-8. [PMID: 23089478 DOI: 10.1016/j.biopha.2012.08.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 08/26/2012] [Indexed: 10/27/2022] Open
Abstract
Numerous naphthoquinone derivatives, such as rhinacanthins function as anticancer drugs, which target hTopoII. The structure of hTopoII contains both an ATPase domain and a DNA binding domain. Several drugs bind to either one or both of these domains, thus modifying the activity of hTopoII. The naphthoquinone esters and amides used in this study showed that their hTopoIIα inhibitory activity was inversely proportional to ATP concentration. In order to better characterize the inhibitory action of these compounds, sufficient quantities of soluble functional hTopoII-ATPase domain were required. Therefore, both the alpha and beta isoforms of the hTopoII-ATPase domain were over-expressed in Escherichia coli. The hTopoIIα-ATPase activity was reduced in the presence of naphthoquinone derivatives. Additionally, a molecular docking study revealed that the selected naphthoquinone ester and amide bind to the ATP-binding domain of hTopoIIα. Collectively, the results here provide for the first time a novel insight into the interaction between naphthoquinone esters and amides, and the ATP-binding domain of hTopoIIα. The further elucidation of the mechanism of action of the naphthoquinone esters and amides inhibitory activity is essential.
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Affiliation(s)
- Nonlawat Boonyalai
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50, Phahon Yothin road, Chatuchak, 10900 Bangkok, Thailand.
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Pradidphol N, Kongkathip N, Sittikul P, Boonyalai N, Kongkathip B. First synthesis and anticancer activity of novel naphthoquinone amides. Eur J Med Chem 2012; 49:253-70. [DOI: 10.1016/j.ejmech.2012.01.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 01/09/2012] [Accepted: 01/10/2012] [Indexed: 11/28/2022]
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Castiglioni E, Di Fabio R, Togninelli A, Brough S, Brown F, Cin MD, Gianotti M, Marchioro C, Merlo G, Spinosa R, Wigglesworth MJ, Botta M. Towards the Discovery of New Hypnotic Agents: Synthesis and Preliminary Pharmacological Evaluation of a Novel Class of Dibenzo[a,d]cycloheptene Derivatives. ChemMedChem 2010; 5:1843-6. [DOI: 10.1002/cmdc.201000280] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Siriwatanametanon N, Fiebich BL, Efferth T, Prieto JM, Heinrich M. Traditionally used Thai medicinal plants: in vitro anti-inflammatory, anticancer and antioxidant activities. JOURNAL OF ETHNOPHARMACOLOGY 2010; 130:196-207. [PMID: 20435130 DOI: 10.1016/j.jep.2010.04.036] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 04/15/2010] [Accepted: 04/24/2010] [Indexed: 05/29/2023]
Abstract
AIMS OF THE STUDY In order to assess traditional Thai claims about the therapeutic potential of medicinal plants and to select plants for future phytochemical research, nine plant species with anti-inflammatory uses were selected from Thai textbooks and assessed for their in vitro anti-inflammatory, antiproliferative and antioxidant activities. METHODS Nuclear factor-kappaB (NF-kappaB) inhibitory effects in stably transfected HeLa cells were determined by luciferase assay, and effects on LPS-induced pro-inflammatory mediators prostaglandin E2 (PGE2), interleukin (IL)-6, IL-1beta, and tumour necrosis factor (TNF)alpha in primary monocytes were assessed by ELISA. Cytotoxic activities were examined against HeLa cells, human leukaemia CCRF-CEM cells and the multidrug-resistant CEM/ADR5000 subline using the MTT and XTT tests. However, a redox status has been linked with both inflammation and cancer, antioxidant effects were also assessed using the DPPH, lipid-peroxidation, and Folin-Ciocalteau methods. RESULTS Among all the nine species, Gynura pseudochina var. hispida and Oroxylum indicum showed the most promising NF-kappaB inhibitory effects with the lowest IC(50) values (41.96 and 47.45 microg/ml, respectively). Muehlenbeckia platyclada did not inhibit the NF-kappaB activation but effectively inhibited the release of IL-6, IL-1beta and TNF-alpha with IC(50) values ranging between 0.28 and 8.67 microg/ml. Pouzolzia indica was the most cytotoxic against CCRF-CEM cells and the multidrug-resistant CEM/ADR5000 cells (9.75% and 10.48% viability, at 10 microg/ml, respectively). Rhinacanthus nasutus was the most potent cytotoxicity against HeLa cells (IC(50) 3.63 microg/ml) and showed specific cytotoxicity against the multidrug-resistant CEM/ADR5000 cells (18.72% viability at 10 microg/ml, p<0.0001 when compared to its cytotoxicity against CCRF-CEM cells). Moreover, Oroxylum indicum showed a high level of antioxidant activity by inhibiting lipid-peroxidation (IC(50) 0.08 microg/ml). CONCLUSIONS This study provides in vitro evidence for the use of the Thai plants, most importantly Gynura pseudochina var. hispida, Oroxylum indicum and Muehlenbeckia platyclada as Thai anti-inflammatory remedies and these plants are now a priority for further phytochemical research.
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Affiliation(s)
- Nisarat Siriwatanametanon
- Centre for Pharmacognosy and Phytotherapy, The School of Pharmacy, University of London, London, United Kingdom
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Kongkathip N, Pradidphol N, Hasitapan K, Grigg R, Kao WC, Hunte C, Fisher N, Warman AJ, Biagini GA, Kongsaeree P, Chuawong P, Kongkathip B. Transforming rhinacanthin analogues from potent anticancer agents into potent antimalarial agents. J Med Chem 2010; 53:1211-21. [PMID: 20067272 DOI: 10.1021/jm901545z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Twenty-six novel naphthoquinone aliphatic esters were synthesized by esterification of 1,4-naphthoquinone alcohols with various aliphatic acids. The 1,4-naphthoquinone alcohols were prepared from 1-hydroxy-2-naphthoic acid in nine steps with excellent yields. Twenty-four of the novel synthetic naphthoquinone esters showed significant antimalarial activity with IC(50) values in the range of 0.03-16.63 microM. The length of the aliphatic chain and the presence of C-2' substituents on the propyl chain affected the activity. Interestingly, compounds 31 and 37 showed very good antimalarial activity and were not toxic to normal Vero cells, and the PTI values of 31 (>1990.38) and 37 (1825.94) are excellent. Both 31 and 37 showed potent inhibition against P. falciparum 3D7 cyt bc(1) and no inhibition on rat cyt bc(1). They showed IC(50) values in the nanomolar range, providing full inhibition of cyt bc(1) with one molecule inhibitor bound per cyt bc(1) monomer at the Q(o) site.
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Affiliation(s)
- Ngampong Kongkathip
- Natural Products and Organic Synthesis Research Unit (NPOS), Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Kasetsart University, Jatujak, Bangkok 10900, Thailand.
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Abid OUR, Ibad MF, Nawaz M, Ali A, Sher M, Rama NH, Villinger A, Langer P. Synthesis of 1,4-diaryl-2-naphthoates based on site-selective Suzuki–Miyaura reactions. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Siripong P, Hahnvajanawong C, Yahuafai J, Piyaviriyakul S, Kanokmedhakul K, Kongkathip N, Ruchirawat S, Oku N. Induction of apoptosis by rhinacanthone isolated from Rhinacanthus nasutus roots in human cervical carcinoma cells. Biol Pharm Bull 2009; 32:1251-60. [PMID: 19571394 DOI: 10.1248/bpb.32.1251] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rhinacanthone, a main bioactive naphthoquinone, isolated from roots of Rhinacanthus nasutus KURZ, (family Acanthaceae), a Thai traditional medicine, has been reported to possess anticancer effects, although the anticancer mechanism is still unclear. Therefore, we investigated the effects of rhinacanthone on cell proliferation, cell cycle progression and apoptosis induction in human cervical carcinoma (HeLa) cells. beta-Lapachone, an anticancer drug having a chemical structure related to rhinacanthone, was used as a positive control. The results demonstrated that rhinacanthone inhibited proliferation of HeLa cells in a dose-dependent manner and had greater efficacy than that of beta-lapachone: IC(50) values of the compound ranged from 1.2+/-0.1 to 5.5+/-0.86 muM for 2-24 h time periods. Rhinacanthone-treated HeLa cells displayed several apoptotic features as evidenced by the appearance of chromatin condensation, internucleosomal DNA fragmentation, increase in the proportion of sub G(1) apoptotic cells, and externalization of annexin-V. The apoptotic processes by the treatment with rhinacanthone involved in a marked increase in the level of pro-apoptotic protein Bax and decrease in the levels of anti-apoptotic proteins Bcl-2 and survivin as well as subsequent activation of caspase-9 and caspase-3. Moreover, rhinacanthone increased the expression of apoptosis-inducing factor (AIF) which would translocate from mitochondria to nucleus through cytosol, and induce apoptosis through caspase independent signaling pathway. Taken together, our findings for the first time demonstrate that rhinacanthone-induced apoptosis in HeLa cells is mediated primarily through the mitochondria-dependent signaling pathway, suggesting that it may be a promising agent for the treatment of human cervical cancer.
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Affiliation(s)
- Pongpun Siripong
- Natural Products Research Section, Research Division, National Cancer Institute.
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Sharma BK, Singh P, Kumar R, Sharma S. Quantitative structure-activity relationship study of novel rhinacanthins and related naphthoquinone esters as anticancer agents. J Enzyme Inhib Med Chem 2008; 23:50-5. [DOI: 10.1080/14756360701408606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- B. K. Sharma
- Department of Chemistry, S.K. Government College, Sikar, 332 001, India
| | - P. Singh
- Department of Chemistry, S.K. Government College, Sikar, 332 001, India
| | - R. Kumar
- Department of Chemistry, S.K. Government College, Sikar, 332 001, India
| | - Susheela Sharma
- Department of Engineering Chemistry, Sobhasaria Engineering College, Sikar, 332 021, India
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Saíz-Urra L, González MP, Teijeira M. 2D-autocorrelation descriptors for predicting cytotoxicity of naphthoquinone ester derivatives against oral human epidermoid carcinoma. Bioorg Med Chem 2007; 15:3565-71. [PMID: 17368033 DOI: 10.1016/j.bmc.2007.02.032] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2007] [Revised: 02/16/2007] [Accepted: 02/19/2007] [Indexed: 11/29/2022]
Abstract
A QSAR study was developed, employing 2D-autocorrelation descriptors and a set of 37 naphthoquinone ester derivatives, in order to model the cytotoxicity of these compounds against oral human epidermoid carcinoma (KB). A comparison with other approaches such as the BCUT, Galvez topological charge indexes, Randić molecular profile, Geometrical, and RDF descriptors was carried out. Mathematical models were obtained by means of the multiple regression analysis (MRA) and the variables were selected using genetic algorithm. Based on the statistical results the 2D-autocorrelation descriptors were considered the best and were able to describe more than 84.2% of the variance in the experimental activity once we controlled for outliers.
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Affiliation(s)
- Liane Saíz-Urra
- Chemical Bioactive Center, Central University of Las Villas, Santa Clara, Villa Clara, C.P. 54830, Cuba
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Ferreira VF, Jorqueira A, Souza AMT, da Silva MN, de Souza MCBV, Gouvêa RM, Rodrigues CR, Pinto AV, Castro HC, Santos DO, Araújo HP, Bourguignon SC. Trypanocidal agents with low cytotoxicity to mammalian cell line: a comparison of the theoretical and biological features of lapachone derivatives. Bioorg Med Chem 2006; 14:5459-66. [PMID: 16725327 DOI: 10.1016/j.bmc.2006.04.046] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2006] [Revised: 04/24/2006] [Accepted: 04/28/2006] [Indexed: 11/23/2022]
Abstract
Starting from alpha- and beta-lapachones, in this work we compared the biological and theoretical profile of several oxyran derivatives of lapachone as potential trypanocidal agents. Our biological results showed that the oxyrans tested act as trypanocidal agents against Trypanosoma cruzi with minimal cytotoxicity in the VERO cell line compared to naphthoquinones. The oxyran derivative of alpha-lapachone (7a) showed to be one of the most potent compounds. In our molecular modeling study, we analyzed the C-ring moiety and the redox center of beta-lapachone molecule as the moieties responsible for the trypanocidal and cytotoxic effects on mammalian cell line. The computational methods used to delineate the structural requirements for the trypanocidal profile pointed out that the transposition of the C-ring moiety of beta-lapachone, combined with its oxyran ring, introduced important molecular requirements for trypanocidal activity in the HOMO energy, HOMO orbital coefficient, LUMO density, electrostatic potential map, dipole moment vector, and calculated logP (clogP) parameter. This study could lead to the development of new antichagasic medicines based on alpha-lapachone analogs.
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Affiliation(s)
- Vitor F Ferreira
- Universidade Federal Fluminense, Instituto de Química, Departamento de Química Orgânica, Niterói, Rio de Janeiro, Brazil.
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Siripong P, Yahuafai J, Shimizu K, Ichikawa K, Yonezawa S, Asai T, Kanokmedakul K, Ruchirawat S, Oku N. Antitumor Activity of Liposomal Naphthoquinone Esters Isolated from Thai Medicinal Plant: Rhinacanthus nasutus KURZ. Biol Pharm Bull 2006; 29:2279-83. [PMID: 17077529 DOI: 10.1248/bpb.29.2279] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We previously observed that rhinacanthins-C, -N and -Q, three main naphthoquinone esters isolated from the roots of Thai medicinal plant; Rhinacanthus nasutus KURZ. (Acanthaceae) induced apoptosis of human cervical carcinoma HeLaS3 cells. Since these rhinacanthins showed limited solubility in aqueous medium, we attempted to entrap them into liposomal membrane: Liposomalization enabled injection of the drugs and the drugs were expected to transfer to lipoproteins in the bloodstream. Liposomal formulations of rhinacanthins-C, -N and -Q showed strong antiproliferative activity against HeLaS3 cells with the IC50 values of 32, 17, 70 microM; 19, 17, 52 microM and 2.7, 2.0 and 5.0 microM for the exposure time of 24, 48, and 72 h, respectively. These liposomes suppressed the tumor growth in Meth-A sarcoma-bearing BALB/c mice at the dose of 5.0 mg/kg/d for 10 d. Among rhinacanthins, liposomal rhinacanthin-N significantly suppressed solid tumor growth. Based on these results, our findings demonstrated that rhinacanthin-N suppressed tumor growth in vivo, and suggested that liposomes are useful for preparing injectable formulation of hydrophobic drugs.
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Affiliation(s)
- Pongpun Siripong
- Natural Products Research Section, Research Division, National Cancer Institute, Bangkok, Thailand
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Siripong P, Yahuafai J, Shimizu K, Ichikawa K, Yonezawa S, Asai T, Kanokmedakul K, Ruchirawat S, Oku N. Induction of Apoptosis in Tumor Cells by Three Naphthoquinone Esters Isolated from Thai Medicinal Plant: Rhinacanthus nasutus KURZ. Biol Pharm Bull 2006; 29:2070-6. [PMID: 17015953 DOI: 10.1248/bpb.29.2070] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rhinacanthus nasutus KURZ. (Acanthaceae) has been used as Thai traditional medicine for the treatment of various cancers. Recently, we reported that rhinacanthins, active components of the plant, had antiproliferative activity against human cancer line cells. In the present study, we investigated the growth inhibitory mechanism of rhinacanthins-C, -N and -Q, three main naphthoquinone esters isolated from the roots of R. nasutus KURZ. in human cervical carcinoma (HeLaS3) cells by means of TUNEL staining, DNA fragmentation assay, flow cytometry, and cleavage assay of Asp-Glu-Val-Asp-peptide-nitroanilide, a caspase-3 substrate. After the HeLaS3 cells was exposed with different concentrations of the drugs, rhinacanthins-C, -N and -Q exhibited antiproliferative effects on HeLaS3 cells with the IC50 values of 80, 65, 73 microM; 55, 45, 55 microM; and 1.5, 1.5 and 5.0 microM for 24, 48 and 72 h time points, respectively. Morphological changes showing nuclear fragmentation of rhinacanthins-treated cells were clearly observed after 48 h exposure. Consistent with this observation, the appearance of a ladder formation was also evident with an agarose gel electrophoresis of the extracted DNA. Flow cytometric analysis revealed that rhinacanthin-N caused G2/M arrest of HeLaS3 cells after 24 h incubation, and increased the proportion of sub-G1 hypodiploid cells, apoptotic cells, in the population of HeLaS3 cells after 48 and 72 h incubation. Moreover, the drug treatment markedly elevated the activity of caspase-3. Based on these results, our findings demonstrated for the first time that the inhibitory effects of three main naphthoquinone esters isolated from the roots of R. nasutus KURZ. on the growth of HeLaS3 cells appear to arise from the induction of apoptosis, that might be associated with the activation of caspase-3 pathway.
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Affiliation(s)
- Pongpun Siripong
- Natural Products Research Section, Research Division, National Cancer Institute, Bangkok, Thailand
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Kongkathip B, Sangma C, Kirtikara K, Luangkamin S, Hasitapan K, Jongkon N, Hannongbua S, Kongkathip N. Inhibitory effects of 2-substituted-1-naphthol derivatives on cyclooxygenase I and II. Bioorg Med Chem 2005; 13:2167-75. [PMID: 15727869 DOI: 10.1016/j.bmc.2004.12.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2004] [Revised: 12/28/2004] [Accepted: 12/29/2004] [Indexed: 02/02/2023]
Abstract
Naphthol derivatives, 2-(3'-hydroxypropyl)-naphthalen-1-ol (2), 2-(3'-hydroxy-2'-methylpropyl)-naphthalen-1-ol (3) and 2-(3'-hydroxy-2',2'-dimethylpropyl)-naphthalen-1-ol (7) were synthesized and already reported by our group. Therefore in this paper we described further synthesis of their ether derivatives, 3-(1-methoxy-naphthalen-2-yl)-propan-1-ol (4), 3-(1-methoxy-naphthalen-2-yl)-2methyl-propan-1-ol (5), 3-(1-methoxy-naphthalen-2-yl)-2,2-dimethyl-propan-1-ol (8), 2-(3-methoxy-propyl)-naphthalen-1-ol (10) and 2-(3-methoxy-2,2-dimethyl-propyl)-naphthalen-1-ol (13). Compounds 4, 5 and 8 were prepared by methylation of compounds 2, 3 and 7, respectively while compounds 10 and 13 were prepared in good yield from naphthols 2 and 7, respectively. When tested for inhibitory activity, five compounds (2, 3, 7, 10 and 13) showed preferential inhibition of COX-2 over COX-1, while compounds 4, 5 and 8 lacked inhibitory effect on either the COX-1 or COX-2 isozyme. The structure-activity relationships of these naphthols analyzed by docking experiments, indicated that the presence of hydroxyl group at C-1 position on the naphthalene nucleus enhanced the anti-inflammatory activity towards COX-2 via hydrogen bonding to the COX-2 Val 523 side chain. When this hydroxyl group was replaced by methoxy group, there was no inhibition. C-2' Dimethyl substituents on the propyl chain also increased the inhibitory activity. All active compounds have the C-1 hydroxyl group aligned so as to form hydrogen bond with Val 523. The results provide a model for the binding of the naphthol derivatives to COX-2 and facilitate the design of more potent or selective analogs prior to synthesis.
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Affiliation(s)
- Boonsong Kongkathip
- Natural Products and Organic Synthesis Research Unit (NPOS), Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
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