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Pandey AR, Ahmad S, Singh SP, Mishra A, Bisen AC, Sharma G, Ahmad I, Shukla SK, Bhatta RS, Kanojiya S, Tamrakar AK, Sashidhara KV. Furostanol saponins from Asparagus racemosus as potential hypoglycemic agents. PHYTOCHEMISTRY 2022; 201:113286. [PMID: 35752344 DOI: 10.1016/j.phytochem.2022.113286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Bioactivity guided phytochemical investigation led to isolation of six undescribed furostanol saponins, furoasparoside A-F along with five known compounds, gallic acid, methyl gallate, quercetin-3-O-β-glucopyranoside, liquiritigenin 4׳-O-β-apiofuranosyl-(1 → 2)-β-glucopyranoside and β-glucogallin for the first time from the roots of Asparagus racemosus. Isolated saponins were screened for their antidiabetic potential in L6-GLUT4myc myotubes in vitro followed by an in vivo evaluation in streptozocin-induced diabetic rats and db/db mice. Furoasparoside E produced a notable decrease in the postprandial blood glucose profile, in leptin receptor-deficient db/db mice, type 2 diabetes model. The effect of furoasparoside E on GLUT4 translocation was found to be mediated by the AMPK-dependent signaling pathway in L6-GLUT4myc myotubes. Moreover, it emerged as a stable plant metabolite with higher bioavailability and efficacy in in vivo pharmacokinetic studies. Therefore, these studies indicated that furoasparoside E may serve as a propitious lead for the management of type 2 diabetes and its secondary complications from natural source.
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Affiliation(s)
- Alka Raj Pandey
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Shadab Ahmad
- Division of Biochemistry & Structural Biology, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Suriya Pratap Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Anjali Mishra
- Pharmaceutics and Pharmacokinetics Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Amol Chhatrapati Bisen
- Pharmaceutics and Pharmacokinetics Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Gaurav Sharma
- Sophisticated Analytical Instrument Facility & Research, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Ishbal Ahmad
- Division of Biochemistry & Structural Biology, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Sanjeev K Shukla
- Sophisticated Analytical Instrument Facility & Research, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Rabi Sankar Bhatta
- Pharmaceutics and Pharmacokinetics Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Sanjeev Kanojiya
- Sophisticated Analytical Instrument Facility & Research, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Akhilesh Kumar Tamrakar
- Division of Biochemistry & Structural Biology, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India
| | - Koneni V Sashidhara
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India; Sophisticated Analytical Instrument Facility & Research, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, U.P., India.
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Thu ZM, Oo SM, Nwe TM, Aung HT, Armijos C, Hussain FHS, Vidari G. Structures and Bioactivities of Steroidal Saponins Isolated from the Genera Dracaena and Sansevieria. Molecules 2021; 26:1916. [PMID: 33805482 PMCID: PMC8037284 DOI: 10.3390/molecules26071916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/13/2021] [Accepted: 03/23/2021] [Indexed: 11/23/2022] Open
Abstract
The species Dracaena and Sansevieria, that are well-known for different uses in traditional medicines and as indoor ornamental plants with air purifying property, are rich sources of bioactive secondary metabolites. In fact, a wide variety of phytochemical constituents have been isolated so far from about seventeen species. This paper has reviewed the literature of about 180 steroidal saponins, isolated from Dracaena and Sansevieria species, as a basis for further studies. Saponins are among the most characteristic metabolites isolated from the two genera. They show a great variety in structural motifs and a wide range of biological activities, including anti-inflammatory, anti-microbial, anti-proliferative effects and, in most case, remarkable cytotoxic properties.
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Affiliation(s)
- Zaw Min Thu
- Department of Chemistry, Kalay University, Kalay 03044, Myanmar; (S.M.O.); (T.M.N.)
| | - Sann Myint Oo
- Department of Chemistry, Kalay University, Kalay 03044, Myanmar; (S.M.O.); (T.M.N.)
| | - Thinn Myat Nwe
- Department of Chemistry, Kalay University, Kalay 03044, Myanmar; (S.M.O.); (T.M.N.)
| | - Hnin Thanda Aung
- Department of Chemistry, University of Mandalay, Mandalay 100103, Myanmar;
| | - Chabaco Armijos
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador
| | - Faiq H. S. Hussain
- Medical Analysis Department, Faculty of Science, Tishk International University, Erbil 44001, Iraq;
| | - Giovanni Vidari
- Medical Analysis Department, Faculty of Science, Tishk International University, Erbil 44001, Iraq;
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Sidana J, Singh B, Sharma OP. Saponins of Agave: Chemistry and bioactivity. PHYTOCHEMISTRY 2016; 130:22-46. [PMID: 27374482 DOI: 10.1016/j.phytochem.2016.06.010] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 06/15/2016] [Accepted: 06/23/2016] [Indexed: 05/08/2023]
Abstract
The genus Agave comprises more than 400 species with geographical presence in the tropical and sub-tropical regions of the world. These plants have a rich history of folkloric use and are known for a wide spectrum of applications. Secondary metabolites of diverse chemical classes have been reported from Agave species. Owing to their pharmacological significance, the steroidal saponins of Agave have caught the attention of phytochemists, biologists and drug discovery scientists. The present review describes 141 steroidal saponins and sapogenins and covers the literature published from 1970 to 2015. It is a comprehensive and coherent presentation of the structures, methods of chemical profiling, structure elucidation and biological activities of the saponins and sapogenins reported from Agave. The article provides a perspective of the research on steroidal compounds of Agave.
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Affiliation(s)
- Jasmeen Sidana
- Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, Himachal Pradesh, India.
| | - Bikram Singh
- Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, Himachal Pradesh, India
| | - Om P Sharma
- Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, Himachal Pradesh, India
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Huang HC, Lin MK, Hwang SY, Hwang TL, Kuo YH, Chang CI, Ou CY, Kuo YH. Two anti-inflammatory steroidal saponins from Dracaena angustifolia Roxb. Molecules 2013; 18:8752-63. [PMID: 23887717 PMCID: PMC6270147 DOI: 10.3390/molecules18088752] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 07/11/2013] [Accepted: 07/21/2013] [Indexed: 01/24/2023] Open
Abstract
Two new steroidal saponins, named drangustosides A–B (1–2), together with eight known compounds 3–10 were isolated and characterized from the MeOH extract of Dracaena angustifolia Roxb. The structures of compounds were assigned based on 1D and 2D NMR spectroscopic analyses, including HMQC, HMBC, and NOESY. Compounds 1 and 2 showed anti-inflammatory activity by superoxide generation and elastase release by human neutrophils in response to fMLP/CB.
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Affiliation(s)
- Hui-Chi Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 404, Taiwan
| | - Ming-Kuem Lin
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 404, Taiwan
| | - Syh-Yuan Hwang
- Endemic Species Research Institute, Council of Agriculture, Nantou 552, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, Chang Gung University, Taoyuan 333, Taiwan
| | - Yao-Haur Kuo
- Division of Herbal Drugs and Natural Products, National Research Institute of Chinese Medicine, Taipei 211, Taiwan
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan
| | - Chi-I Chang
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Chung-Yi Ou
- Graduate Institute of Pharmaceutical Chemistry, China Medical University, Taichung 404, Taiwan
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 404, Taiwan
- Tsuzuki Institute for Traditional Medicine, College of Pharmacy, China Medical University, Taichung 404, Taiwan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-4-2205-3366 (ext. 5701)
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Jastrzębska I, Górecki M, Frelek J, Santillan R, Siergiejczyk L, Morzycki JW. Photoinduced Isomerization of 23-Oxosapogenins: Conformational Analysis and Spectroscopic Characterization of 22-Isosapogenins. J Org Chem 2012. [PMID: 23190388 DOI: 10.1021/jo3022549] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Izabella Jastrzębska
- Institute of Chemistry, University of Białystok, Piłsudskiego 11/4,
15-443 Białystok, Poland
| | - Marcin Górecki
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224
Warsaw, Poland
| | - Jadwiga Frelek
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224
Warsaw, Poland
| | - Rosa Santillan
- Departamento
de Química, CINVESTAV-IPN, Apdo.
Postal 14-740, 07000 México,
D.F., Mexico
| | - Leszek Siergiejczyk
- Institute of Chemistry, University of Białystok, Piłsudskiego 11/4,
15-443 Białystok, Poland
| | - Jacek W. Morzycki
- Institute of Chemistry, University of Białystok, Piłsudskiego 11/4,
15-443 Białystok, Poland
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Gvazava LN, Kikoladze VS. Steroidal sapogenins from Polygonatum polyanthemum and P. glaberrimum. Chem Nat Compd 2012. [DOI: 10.1007/s10600-012-0425-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Challinor VL, Piacente S, De Voss JJ. NMR assignment of the absolute configuration of C-25 in furostanol steroidal saponins. Steroids 2012; 77:602-8. [PMID: 22361298 DOI: 10.1016/j.steroids.2012.02.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 02/02/2012] [Accepted: 02/04/2012] [Indexed: 11/24/2022]
Abstract
The chemical shifts of the geminal proton resonances of H(2)-26 (δa and δb) are a widely used predictor of C-25 stereochemistry in furostanol steroidal saponins, being in general more resolved in 25S than 25R compounds. Unexpectedly, we found that application of this empirical rule in different solvents led to conflicting assignments of stereochemistry. An experimental survey revealed that, while the chemical shifts of H(2)-26 exhibit a dependence on C-25 configuration, it is less pronounced in methanol-d4 than pyridine-d5 solvent, and thus the general rule derived for pyridine-d5 fails when NMR spectra are acquired in methanol-d4. We propose a modified empirical method for the direct assignment of C-25 stereochemistry in furostanol saponins in methanol-d4 (Δ(ab)=0.45-0.48 ppm for 25S; Δ(ab)=0.33-0.35 ppm for 25R), and provide several detailed examples. In addition, the absolute configuration of compound 8, a steroidal saponin isolated in previous work from Ruscus colchicus, is corrected from 25R to 25S stereochemistry.
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Affiliation(s)
- Victoria L Challinor
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
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Yu HS, Zhang J, Kang LP, Han LF, Zou P, Zhao Y, Xiong CQ, Tan DW, Song XB, Yu K, Ma BP. Three New Saponins from the Fresh Rhizomes of Polygonatum kingianum. Chem Pharm Bull (Tokyo) 2009; 57:1-4. [DOI: 10.1248/cpb.57.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- He-Shui Yu
- Beijing Institute of Radiation Medicine
- Tianjin University of Traditional Chinese Medicine
| | - Jie Zhang
- Beijing Institute of Radiation Medicine
| | | | - Li-Feng Han
- Beijing Institute of Radiation Medicine
- Tianjin University of Traditional Chinese Medicine
| | - Peng Zou
- Beijing Institute of Radiation Medicine
| | - Yang Zhao
- Beijing Institute of Radiation Medicine
| | | | | | - Xin-Bo Song
- Tianjin University of Traditional Chinese Medicine
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Shim S, Lee E, Kim J, Kang S, Ha H, Lee H, Kim C, Lee JH, Son K. Rat Growth-Hormone Release Stimulators from Fenugreek Seeds. Chem Biodivers 2008; 5:1753-61. [DOI: 10.1002/cbdv.200890164] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Vázquez-Ramírez I, Macías-Alonso M, Arcos-Ramos RO, Ruíz-Pérez KM, Solano-Ramírez DO, Iglesias Arteaga MA. 1H and 13C NMR characteristics of synthetic derivatives of steroid sapogenins. Part III. 16Beta,23:23,26-diepoxy side chains. Steroids 2008; 73:642-51. [PMID: 18353410 DOI: 10.1016/j.steroids.2008.01.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2007] [Revised: 01/22/2008] [Accepted: 01/28/2008] [Indexed: 11/17/2022]
Abstract
The full assignments of the (1)H and (13)C NMR signals of steroids bearing the 16beta,23:23,26-diepoxy side chain are provided. Differentiation of the diasterotopic H-26 pair was achieved with the aid of NOESY experiments. The main substituent and steric effects associated with this moiety and their influence on the chemical shifts of the neighboring atoms are discussed.
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Affiliation(s)
- Ignacio Vázquez-Ramírez
- Departamento de Química Orgánica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
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Belhouchet Z, Sautour M, Miyamoto T, Lacaille-Dubois MA. Steroidal Saponins from the Roots of Smilax aspera subsp. mauritanica. Chem Pharm Bull (Tokyo) 2008; 56:1324-7. [DOI: 10.1248/cpb.56.1324] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Zineddine Belhouchet
- Laboratoire de Pharmacognosie, Unité UMIB UPRES-EA 3660, Faculté de Pharmacie, Université de Bourgogne
| | - Marc Sautour
- Laboratoire de Pharmacognosie, Unité UMIB UPRES-EA 3660, Faculté de Pharmacie, Université de Bourgogne
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Sautour M, Miyamoto T, Lacaille-Dubois MA. Steroidal saponins from Asparagus acutifolius. PHYTOCHEMISTRY 2007; 68:2554-62. [PMID: 17449075 DOI: 10.1016/j.phytochem.2007.02.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Revised: 01/14/2007] [Accepted: 02/23/2007] [Indexed: 05/15/2023]
Abstract
Six new steroidal saponins (1-6) were isolated from the roots of A. acutifolius L., together with a known spirostanol glycoside (7). Their structures were elucidated mainly by extensive spectroscopic analysis (1D and 2D NMR, FABMS and HRESIMS). Compounds 4-7 demonstrated antifungal activity against the human pathogenic yeasts C. albicans, C. glabrata and C. tropicalis with MICs values between 12.5 and 100 microg/ml.
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Affiliation(s)
- Marc Sautour
- Laboratoire de Pharmacognosie, Unité de Molécules d'Intérêt Biologique, UMIB UPRES-EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7 Bd Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France
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14
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Structural revision of shatavarins I and IV, the major components from the roots of Asparagus racemosus. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.07.121] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sautour M, Miyamoto T, Lacaille-Dubois MA. Steroidal saponins from Smilax medica and their antifungal activity. JOURNAL OF NATURAL PRODUCTS 2005; 68:1489-93. [PMID: 16252913 DOI: 10.1021/np058060b] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Three new steroidal saponins (1-3) were isolated from the roots of Smilax medica, together with the known disporoside A (4). The structures of the new compounds were elucidated mainly by extensive spectroscopic analysis (1D and 2D NMR, FABMS, and HRESIMS). Compounds 1, 2, and 4 demonstrated weak antifungal activity against the human pathogenic yeasts Candida albicans, C. glabrata, and C.tropicalis, with MIC values between 12.5 and 50 microg/mL.
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Affiliation(s)
- Marc Sautour
- Laboratoire de Pharmacognosie, Unité de Molécules d'Intérêt Biologique, UMIB UPRES-EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7 Boulevard Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France
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Morzycki JW, Paradowska K, Dąbrowska-Balcerzak K, Jastrzebska I, Siergiejczyk L, Wawer I. 13C NMR study of spirostanes and furostanes in solution and solid state. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.10.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Agrawal PK. Dependence of 1H NMR chemical shifts of geminal protons of glycosyloxy methylene (H2-26) on the orientation of the 27-methyl group of furostane-type steroidal saponins. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2004; 42:990-993. [PMID: 15386548 DOI: 10.1002/mrc.1474] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
An approach based on the difference (Delta(ab) = delta(a) - delta(b)) between the 1H NMR chemical shifts (delta(a), delta(b)) of the geminal protons of glycosyloxy methylene (H2-26) (Delta(ab) = <0.48 for 25R; Delta(ab) = >0.57 for 25S) is proposed for ascertaining 25R/25S orientation of the 27-methyl group of furostane-type steroidal saponins. These studies suggested the 25R-orientation of the 27-Me group for the furostanol glycosides isolated by Wu et al. from Tribulus terrestris.
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Affiliation(s)
- Pawan K Agrawal
- Central Institute of Medicinal and Aromatic Plants, Lucknow-226015, India.
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Pan WB, Chang FR, Wei LM, Wu YC. New flavans, spirostanol sapogenins, and a pregnane genin from Tupistra chinensis and their cytotoxicity. JOURNAL OF NATURAL PRODUCTS 2003; 66:161-168. [PMID: 12608845 DOI: 10.1021/np0203382] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Seven new compounds, including three new flavans [tupichinol A-C (1-3)], three new spirostanol sapogenins [tupichigenin D-F (4-6)], and one new pregnane genin [tupipregnenolone (7)], together with 18 known compounds, were isolated from the underground parts of Tupistra chinensis. The structures of the new compounds were elucidated by spectroscopic analysis and chemical evidence. The structures and relative stereochemistry of 1 and 9 were further confirmed by single-crystal X-ray crystallographic analysis. Compounds Delta(25(27))-pentrogenin, 10, and ranmogenin A showed 100%, 96%, and 80% inhibition, respectively, against human gastric tumor (NUGC) cells at a concentration of 50 microM. Delta(25(27))-pentrogenin showed 100% inhibition against human nasopharyngeal carcinoma (HONE-1) cells at a concentration of 50 microM.
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Affiliation(s)
- Wen-Bin Pan
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Soule S, Guntner C, Vazquez A, Argandona V, Moyna P, Ferreira F. An aphid repellent glycoside from Solanum laxum. PHYTOCHEMISTRY 2000. [PMID: 11117891 DOI: 10.1016/s0031-9422(00)00273-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A spirostanic saponin was isolated from the ethanolic extract of the aerial parts of Solanum laxum Steud. The compound, named luciamin, was characterised by NMR spectroscopy, mass spectrometry and chemical methods, as (22R, 25S)-spirost-5-en-3 beta, 15 alpha-diol 3-O-|beta-D-glucopyranosyl (1 --> 2)-beta-D-glucopyranosyl-( 1 --> 4)-[alpha-L-rhamnopyranosyl-( 1 --> 2)]-beta-D-galactopyranoside|. The compound was tested against the aphid Schizaphis graminum by incorporation in artificial diets. It showed a deterrent (toxic) activity against the insect and is the first spirostane glycoside reported to have this activity.
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Affiliation(s)
- S Soule
- Departamento de Quimica, Facultad de Ciencias, Montevideo, Uruguay
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