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Abduljalil JM, Elfiky AA, Elgohary AM. Exploration of natural compounds against the human mpox virus DNA-dependent RNA polymerase in silico. J Infect Public Health 2023; 16:996-1003. [PMID: 37167647 PMCID: PMC10148721 DOI: 10.1016/j.jiph.2023.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/18/2023] [Accepted: 04/27/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND Last year, the human monkeypox virus (hMPXV) emerged as an alarming threat to the community, with a detectable outbreak outside the African continent for the first time. According to The American Centers for Disease Control and Prevention (CDC), the virus is reported globally, with 86,746 confirmed cases (until April 08, 2023). DNA-dependent RNA polymerase (DdRp) is an essential protein for viral replication; hence it is a promising drug target for developing antiviral drugs against DNA viruses. Therefore, this study was conducted to search for natural compounds that could provide scaffolds for RNA polymerase inhibitors. METHODS In this study, the DdRp structure of hMPXV was modeled and used to screen the natural compounds database (COCONUT). The virtual screening revealed 15 compounds able to tightly bind to the active site of the DdRp (binding energies less than -7.0 kcal/mol) compared to the physiological nucleotide, guanosine triphosphate (GTP). Molecular dynamics simulation was then performed on the top four hits and compared to GTP RESULTS: The results revealed the potential of four compounds (comp289, comp295, comp441, and comp449) in binding the hMPXV DdRp active site with a comparable binding affinity (-17.06 ± 2.96, -11.6 ± 5.34, -14.85 ± 2.66, and -10.79 ± 4.49 kcal/mol) with GTP (-21.03 ± 7.55 kcal/mol) CONCLUSION: These findings may also pave the way for developing new hMPXV inhibitors based on natural product scaffolds. These results need further experimental validation but promising as it was validated by unbiased all-atom MD simulations and binding free energy calculations.
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Affiliation(s)
- Jameel M Abduljalil
- Department of Biological Sciences, Faculty of Applied Sciences, Thamar University, Dhamar, Yemen
| | - Abdo A Elfiky
- Biophysics Department, Faculty of Science, Cairo University, Giza, Egypt.
| | - Alaa M Elgohary
- Biophysics Department, Faculty of Science, Cairo University, Giza, Egypt
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2
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Wang L, Zhu L, Gao S, Bao F, Wang Y, Chen Y, Li H, Chen L. Withanolides isolated from Nicandra physaloides protect liver cells against oxidative stress-induced damage. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.10.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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3
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Basso AV, Leiva González S, Barboza GE, Careaga VP, Calvo JC, Sacca PA, Nicotra VE. Phytochemical Study of the Genus Salpichroa (Solanaceae), Chemotaxonomic Considerations, and Biological Evaluation in Prostate and Breast Cancer Cells. Chem Biodivers 2017; 14. [PMID: 28581196 DOI: 10.1002/cbdv.201700118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 06/01/2017] [Indexed: 02/02/2023]
Abstract
Twelve Salpichroa taxa have been phytochemically analyzed. From the aerial parts of S. scandens, four known salpichrolides A, C, I, S, and an unreported withanolide named salpichrolide V (1), were isolated. In S. dependens, S. gayi, S. glandulosa subsp. glandulosa, S. glandulosa subps. weddellii, S. leucantha, S. micrantha, S. microloba, S. proboscidea, S. ramosissima, S. tristis var. tristis, and S. weberbauerii, no withanolides were found. The chemical content of ca. 85% of the Salpichroa taxa is in agreement with molecular studies, which suggest that Salpichroa and Jaborosa, a genus considered morphologically close to Salpichroa, are distant in the systematic of the Solanoideae subfamily. Moreover, the in vitro cytotoxic activity of a set of natural salpichrolides and derivatives was examined against two prostate carcinoma cell lines (PC3 and LNCaP) and two human breast cancer cell lines (MCF-7 and T47D). Several compounds showed moderate activity (IC50 = 64.91 - 29.97 μm).
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Affiliation(s)
- Ana Valentina Basso
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Universidad Nacional de Córdoba, CC 495, 5000, Córdoba, Argentina
| | | | - Gloria Estela Barboza
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Universidad Nacional de Córdoba, CC 495, 5000, Córdoba, Argentina
| | - Valeria Pilar Careaga
- Departamento de Química Orgánica, Unidad de Microanálisis y Métodos Físicos Aplicados a la Química Orgánica (UMYMFOR-CONICET), Facultad de Ciencias, Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria S/N Piso: 3, C1428EHA, Ciudad Autónoma de Buenos Aires, Argentina.,Instituto de Biología y Medicina Experimental (IBYME-CONICET), Vuelta de Obligado 2490, C1428ADN, Ciudad Autónoma de Buenos Aires, Argentina
| | - Juan Carlos Calvo
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Vuelta de Obligado 2490, C1428ADN, Ciudad Autónoma de Buenos Aires, Argentina
| | - Paula A Sacca
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Vuelta de Obligado 2490, C1428ADN, Ciudad Autónoma de Buenos Aires, Argentina
| | - Viviana Estela Nicotra
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Universidad Nacional de Córdoba, CC 495, 5000, Córdoba, Argentina
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4
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Basso AV, Nicotra VE, Parra A, Martínez A, Fernández-Vivas A. Biotransformation of Salpichrolides A, C, and G by Three Filamentous Fungi. JOURNAL OF NATURAL PRODUCTS 2016; 79:1658-67. [PMID: 27285201 DOI: 10.1021/acs.jnatprod.6b00310] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Incubation of salpichrolide A (1) with Rhizomucor miehei produced hydroxylation in rings B and C (C-7 and C-12) and led to C-5-C-6 epoxide opening, while incubation of salpichrolides C (2) and G (3) with R. miehei led to epoxide opening at the C-24-C-25 and C-5-C-6 positions, respectively. Biotransformation of salpichrolide A (1) with Cunninghamella elegans produced stereoselective hydroxylated, oxidized, and reduced derivatives in different positions of the A, B, and C rings and C-5-C-6 epoxide opening. In addition, selective epoxide opening at the C-5-C-6 or C-24-C-25 positions was obtained from the incubation of salpichrolide A (1) with Curvularia lunata.
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Affiliation(s)
- Ana V Basso
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Universidad Nacional de Córdoba , Casilla de Correo 495, 5000 Córdoba, Argentina
| | - Viviana E Nicotra
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Universidad Nacional de Córdoba , Casilla de Correo 495, 5000 Córdoba, Argentina
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5
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Alvarez LD, Veleiro AS, Burton G. Exploring the molecular basis of action of ring D aromatic steroidal antiestrogens. Proteins 2015; 83:1297-306. [DOI: 10.1002/prot.24820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/03/2015] [Accepted: 04/24/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Lautaro D. Alvarez
- Departamento de Química Orgánica and UMYMFOR (CONICET-UBA); Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires; Buenos Aires Argentina
| | - Adriana S. Veleiro
- Departamento de Química Orgánica and UMYMFOR (CONICET-UBA); Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires; Buenos Aires Argentina
| | - Gerardo Burton
- Departamento de Química Orgánica and UMYMFOR (CONICET-UBA); Facultad De Ciencias Exactas Y Naturales, Universidad De Buenos Aires; Buenos Aires Argentina
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6
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Tian WJ, Qiu YQ, Yao XJ, Chen HF, Dai Y, Zhang XK, Yao XS. Dioxasampsones A and B, Two Polycyclic Polyprenylated Acylphloroglucinols with Unusual Epoxy-Ring-Fused Skeleton from Hypericum sampsonii. Org Lett 2014; 16:6346-9. [DOI: 10.1021/ol503122m] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wen-Jing Tian
- College
of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yu-Qin Qiu
- Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, China
| | - Xiao-Jun Yao
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa, Macau, China
| | - Hai-Feng Chen
- School
of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, China
| | - Yi Dai
- Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, China
| | - Xiao-Kun Zhang
- School
of Pharmaceutical Sciences, Xiamen University, Xiamen 361005, China
| | - Xin-Sheng Yao
- College
of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
- Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, China
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7
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Cao CM, Zhang H, Gallagher RJ, Day VW, Kindscher K, Grogan P, Cohen MS, Timmermann BN. Withanolides from Physalis hispida. JOURNAL OF NATURAL PRODUCTS 2014; 77:631-639. [PMID: 24456028 DOI: 10.1021/np400953n] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nine new withanolides (1-9), withahisolides A-I, were isolated along with nine known compounds (10-18) from the aerial parts of Physalis hispida. The structures of 1-9 were elucidated through a variety of spectroscopic techniques, while the structures of 1 and 2 were confirmed by X-ray crystallographic analysis. Compounds 1-3 are the first withanolides with nonaromatic six-membered ring D moieties. In addition, withanolide 8 represents a novel withanolide skeleton due to the absence of a C-13-C-17 bond within the steroidal nucleus.
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Affiliation(s)
- Cong-Mei Cao
- Department of Medicinal Chemistry, University of Kansas , Lawrence, Kansas 66045, United States
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8
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Nicotra VE, Basso AV, Ramacciotti NS, Misico RI. Withanolides with phytotoxic activity from two species of the genus Salpichroa: S. origanifolia and S. tristis var. lehmannii. JOURNAL OF NATURAL PRODUCTS 2013; 76:2219-2225. [PMID: 24303781 DOI: 10.1021/np400559p] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Seven new withanolides, salpichrolides O-U (1-7), the known 2,3-dihydrosalpichrolide B (9), a substance not previously isolated from a natural source, and three known compounds, salpichrolide D (8), salpichrolide A (10), and salpichrolide C (11), were isolated and characterized from the aerial parts of Salpichroa origanifolia and S. tristis var. lehmannii. Compounds 1-4 and 8 have an oxygenated D ring, while compounds 5-7 and 9-11 possess a six-membered aromatic D ring. The structures of the isolated compounds were identified by analysis of their spectroscopic data including NMR and MS. Withanolides 1, 3, 8, 10, and 11 exhibited selective radicle growth inhibition toward Lactuca sativa (lettuce) at 150 and 400 ppm.
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Affiliation(s)
- Viviana E Nicotra
- Facultad de Ciencias Químicas, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Universidad Nacional de Córdoba , Casilla de Correo 495, 5000 Córdoba, Argentina
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9
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Sonego JM, Cirigliano AM, Cabrera GM, Burton G, Veleiro AS. Synthesis and antifungal activity of C-21 steroids with an aromatic D ring. Steroids 2013; 78:644-50. [PMID: 23499954 DOI: 10.1016/j.steroids.2013.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 01/18/2013] [Accepted: 02/11/2013] [Indexed: 11/17/2022]
Abstract
Six analogues of salpichrolides with a simplified side chain (6-11) were synthesized using a new methodology to obtain steroids with an aromatic D-ring. The key step was the elimination of HBr in a vicinal dibromo D-homosteroid by treatment with 1,4-diazabicyclo[2.2.2]octane (DABCO). All new compounds were completely characterized by 2D NMR techniques and tested on two fungal pathogenic species, Fusarium virguliforme and Fusarium solani.
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Affiliation(s)
- Juan M Sonego
- Departamento de Química Orgánica and UMYMFOR, CONICET-UBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EGA Ciudad de Buenos Aires, Argentina
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10
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11
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Misico RI, Nicotra VE, Oberti JC, Barboza G, Gil RR, Burton G. Withanolides and related steroids. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2011; 94:127-229. [PMID: 21833839 DOI: 10.1007/978-3-7091-0748-5_3] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rosana I Misico
- Departamento de Química Orgánica and UMYMFOR (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, C1428EGA, Argentina.
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12
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Almeida-Lafetá RC, Ferreira MJP, Emerenciano VP, Kaplan MAC. Withanolides from Aureliana fasciculata var. fasciculata. Helv Chim Acta 2010. [DOI: 10.1002/hlca.201000126] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Virginols A-C, three new withanolides from Physalis virginiana. Steroids 2010; 75:346-9. [PMID: 20116389 DOI: 10.1016/j.steroids.2010.01.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 01/19/2010] [Accepted: 01/21/2010] [Indexed: 11/23/2022]
Abstract
Virginols A-C are three new withanolides containing an epoxylactol at the side chain. They were isolated from the aerial parts of Physalis virginiana Miller. Structures of these compounds were determined by analyses of their spectroscopic data, including 1D and 2D NMR. The structure of virginol A was confirmed by X-ray diffraction analysis. The anti-inflammatory activity of virginols was evaluated in the TPA-induced ear mouse edema model.
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14
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Dutra C, Cesio MV, Moyna P, Heinzen H. Acyl Sucroses from Salpichroa Origanifolia. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800300413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The exudate of Salpichroa origanifolia (Solanaceae) foliar glandular trichomes has been characterized chemically. It was demonstrated to be a complex mixture of hexaesters of short chain fatty acids and sucrose. Of the total exudates, 80% was 1′,6′-diacetyl-2,3,4,6-tetra(3-methyl valerianyl)-sucrose, a new natural product, which showed antifungal properties against Aspergillus niger. It is the first report of sugar esters in the genus Salpichroa.
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Affiliation(s)
- Carmelo Dutra
- Pharmacognosy & Natural Products Organic Chemistry Department, Faculty of Chemistry, University of the Republic, Gral. Flores 2124, POB1157, Montevideo, Uruguay, 11800
| | - María Verónica Cesio
- Pharmacognosy & Natural Products Organic Chemistry Department, Faculty of Chemistry, University of the Republic, Gral. Flores 2124, POB1157, Montevideo, Uruguay, 11800
| | - Patrick Moyna
- Pharmacognosy & Natural Products Organic Chemistry Department, Faculty of Chemistry, University of the Republic, Gral. Flores 2124, POB1157, Montevideo, Uruguay, 11800
| | - Horacio Heinzen
- Pharmacognosy & Natural Products Organic Chemistry Department, Faculty of Chemistry, University of the Republic, Gral. Flores 2124, POB1157, Montevideo, Uruguay, 11800
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15
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Yang B, Wang Q, Xia Y, Feng W, Kuang H. Withanolide Compounds from the Flower ofDatura metel L. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790159] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Johnson TA, Tenney K, Cichewicz RH, Morinaka BI, White KN, Amagata T, Subramanian B, Media J, Mooberry SL, Valeriote FA, Crews P. Sponge-derived fijianolide polyketide class: further evaluation of their structural and cytotoxicity properties. J Med Chem 2007; 50:3795-803. [PMID: 17622130 PMCID: PMC2772109 DOI: 10.1021/jm070410z] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The sponge-derived polyketide macrolides fijianolides A (1) and B (2), isolaulimalide and laulimalide, have taxol-like microtubule-stabilizing activity, and the latter exhibits potent cytotoxicity. Insight on the biogeographical and phenotypic variations of Cacospongia mycofijiensis is presented that will enable a future study of the biosynthetic pathway that produces the fijianolides. In addition to fijianolides A and B, six new fijianolides, D-I (7-12), were isolated, each with modifications to the C-20 side chain of the macrolide ring. Compounds 7-12 exhibited a range of in vitro activities against HCT-116 and MDA-MB-435 cell lines. Fijianolides 8 and 10 were shown to disrupt interphase and mitotic division, but were less potent than 2. An in vivo evaluation of 2 using tumor-bearing severe combined immuno-deficiency mice demonstrated significant inhibition of growth in HCT-116 tumors over 28 days.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Phillip Crews
- Corresponding author. Tel: 831-459-2603. Fax: 831-459-2935.
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17
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Chemistry and bioactivity of withanolides from south american Solanaceae. BIOACTIVE NATURAL PRODUCTS (PART L) 2005. [DOI: 10.1016/s1572-5995(05)80072-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Su BN, Park EJ, Nikolic D, Schunke Vigo J, Graham JG, Cabieses F, van Breemen RB, Fong HHS, Farnsworth NR, Pezzuto JM, Kinghorn AD. Isolation and characterization of miscellaneous secondary metabolites of Deprea subtriflora. JOURNAL OF NATURAL PRODUCTS 2003; 66:1089-1093. [PMID: 12932130 DOI: 10.1021/np030081n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two new C-18 norwithanolides based on a C(27) skeleton, subtrifloralactones K (1) and L (2), a new C-18 oxygenated withanolide, 13 beta-hydroxymethylsubtrifloralactone E (3), and a new alpha-ionone derivative, (+)-7 alpha,8 alpha-epoxyblumenol B (4), along with five known compounds, philadelphicalactone A (5), (2S,3S,4R)-2-[(2R)-2'-hydroxytetracosanoylamino]-1,3,4-octadecanetriol (6), trans-N-feruloyltyramine, cis-N-feruloyltyramine, and (S)-coriolic acid, were isolated from additional active fractions of the chloroform-soluble extract of Deprea subtriflora, using a quinone reductase (QR) induction assay as a monitor. The structures of compounds 1-4 were characterized by spectroscopic data interpretation. The potential cancer chemopreventive activities of all isolates in terms of their ability to induce QR activity with cultured Hepa 1c1c7 mouse hepatoma cells were evaluated.
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Affiliation(s)
- Bao-Ning Su
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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19
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Francisco CG, Herrera AJ, Suárez E. Intramolecular hydrogen abstraction reaction promoted by alkoxy radicals in carbohydrates. Synthesis of chiral 2,7-dioxabicyclo[2.2.1]heptane and 6,8-dioxabicyclo[3.2.1]octane ring systems. J Org Chem 2002; 67:7439-45. [PMID: 12375977 DOI: 10.1021/jo026004z] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of specifically protected anhydroalditols with (diacetoxyiodo)benzene or iodosylbenzene and iodine is a mild and selective procedure for the synthesis of chiral 6,8-dioxabicyclo[3.2.1]octane and 2,7-dioxabicyclo[2.2.1]heptane ring systems under neutral conditions. This reaction can be considered to be an intramolecular glycosidation that goes through an intramolecular hydrogen abstraction promoted by an alkoxy radical followed by oxidation of the transient C-radical intermediate to an oxycarbenium ion. This methodology is useful not only for the preparation of chiral synthons but also for the selective oxidation of specific carbons of the carbohydrate skeleton, constituting a good procedure for the synthesis of protected uloses.
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Affiliation(s)
- Cosme G Francisco
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Carretera de La Esperanza 3, 38206 La Laguna, Tenerife, Spain
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Minguzzi S, Barata LES, Shin YG, Jonas PF, Chai HB, Park EJ, Pezzuto JM, Cordell GA. Cytotoxic withanolides from Acnistus arborescens. PHYTOCHEMISTRY 2002; 59:635-641. [PMID: 11867095 DOI: 10.1016/s0031-9422(02)00022-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Three cytotoxic withanolides, two with new structures, were isolated from the leaves of Acnistus arborescens and their structures determined by a combination of 1D and 2D NMR, mass spectral, and molecular modeling studies. Dereplication analysis of the ethyl ether extract was useful for evaluating the components showing significant cytotoxic activity.
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Affiliation(s)
- Sandro Minguzzi
- Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
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