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Lu YH, Xie Y, Hu P, Sun ZL, Li ZX, Huang CG. Stereospecific synthesis and rearrangement of 22S-23-acetylsapogenins. Steroids 2020; 160:108655. [PMID: 32439406 DOI: 10.1016/j.steroids.2020.108655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/30/2020] [Accepted: 05/14/2020] [Indexed: 11/21/2022]
Abstract
The BF3·Et2O-catalysed acetolysis of steroid sapogenins diosgenin, sarsasapogenin and tigogenin in dichloromethane as the solvent instead of acetic anhydride afforded (20S)- and (20R)-22,26-epoxycholestanes (compounds 1 and 2). 22S-23-Acetylsapogenins (compounds 4) were synthesized stereospecifically from 20R-22,26-epoxycholestanes (compounds 2) in good yield. The rearrangement of 22S-23-acetylsapogenins (compounds 4) afforded novel disubstituted dihydropyran furostanol frameworks. Exhaustive NMR characterization of the obtained compounds is provided. Additionally, the structures of the critical compounds (6a and 7a) were unequivocallyconfirmed by single crystal X-ray diffraction studies.
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Affiliation(s)
- Yi-Hong Lu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Yang Xie
- Department of Chemistry, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310027, China
| | - Pei Hu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China
| | - Zhao-Lin Sun
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China
| | - Zhi-Xiong Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China.
| | - Cheng-Gang Huang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
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Mironov ME, Oleshko OS, Pokrovskii MA, Rybalova TV, Pechurov VK, Pokrovskii AG, Cheresis SV, Mishinov SV, Stupak VV, Shults EE. 6-(4'-Aryl-1',2',3'-triazolyl)-spirostan-3,5-diols and 6-(4'-Aryl-1',2',3'-triazolyl)-7-hydroxyspirosta-1,4-dien-3-ones: Synthesis and analysis of their cytotoxicity. Steroids 2019; 151:108460. [PMID: 31344410 DOI: 10.1016/j.steroids.2019.108460] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 07/10/2019] [Accepted: 07/16/2019] [Indexed: 12/30/2022]
Abstract
In an endeavour to develop potent anti-tumor agents from diosgenin, a series of C-6 derived 1,2,3-triazolyl derivatives were designed and synthesized by employing Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition reaction of novel azides - (22R,25R)-6β-azidospirostan-3β,5α-diol and 6β-azido-7α-hydroxyspirosta-1,4-dien-3-one with aryl(hetaryl)alkynes. All the derivatives were evaluated for cytotoxic activity by MTT assay against eight different human cancer cell lines: T-cellular leucosis (CEM-13), human monocytes (U-937), breast (MDA-MB-231, BT-474), prostate (DU-145) and glioblastoma (U-87MG, SNB-19, T98G). The results of this study suggested that 6-(4'-aryl-1',2',3'-triazolyl)spirostan-3,5-diols 2, 3, 4, 5 and 6 possessed a promising cytotoxic potential. The corresponding 6-substituted 7-hydroxy-1,4-spirostadien-3-ones shown less cytotoxity on the human cancer cells. Compounds 2, 3, 4, and 5 which demonstrated high grown inhibition against glioma cancer cells U-87 and T98G, and also on the human-derived N118669 primary glioblastoma cell line (with GI50 values in the range of 5-9 μM), were not affected the growth of SNB-19 cells. The data revealed that phenyl, 4-methoxyphenyl, 4-fluorophenyl, 3,4,5-trimethoxyphenyl or 2-pyridinyl substituent in the triazole moiety at the C-6 position significantly improved the anti-tumor activity. The mentioned position at the spirostan core may be favourable for the synthesis of potent anticancer leads from diosgenin.
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Affiliation(s)
- Maxim E Mironov
- Laboratory of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russian Federation; Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Olga S Oleshko
- Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Mikhail A Pokrovskii
- Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Tatyana V Rybalova
- Laboratory of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russian Federation; Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Vladislav K Pechurov
- Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Andrey G Pokrovskii
- Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Sergey V Cheresis
- Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation
| | - Sergey V Mishinov
- First Department of Neurosurgery, Ya. L. Tsivian Novosibirsk Research Institute of Traumatology and Orthopaedics, Frunze Str. 17, 630091 Novosibirsk, Russian Federation
| | - Vyacheslav V Stupak
- First Department of Neurosurgery, Ya. L. Tsivian Novosibirsk Research Institute of Traumatology and Orthopaedics, Frunze Str. 17, 630091 Novosibirsk, Russian Federation
| | - Elvira E Shults
- Laboratory of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russian Federation; Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russian Federation.
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Tang Y, Su G, Li N, Li W, Chen G, Chen R, Zhou D, Hou Y. Preventive agents for neurodegenerative diseases from resin of Dracaena cochinchinensis attenuate LPS-induced microglia over-activation. J Nat Med 2018; 73:318-330. [DOI: 10.1007/s11418-018-1266-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 10/05/2018] [Indexed: 12/11/2022]
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Jastrzębska I, Morzycki JW. Erroneous epimerization at C-22 in sapogenins. Steroids 2015; 100:17-20. [PMID: 25891092 DOI: 10.1016/j.steroids.2015.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 03/31/2015] [Accepted: 04/08/2015] [Indexed: 10/23/2022]
Abstract
A recent report [1] about the epimerization of steroidal sapogenins at C-22 by treatment with BF3 · OEt2 is incorrect. We proved that the epimerization of sapogenins with BF3 · OEt2 occurs at C-25 as in the case of other acid-catalyzed reactions previously studied.
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Affiliation(s)
- Izabella Jastrzębska
- Institute of Chemistry, University of Białystok, Ciołkowskiego 1K, 15-245 Białystok, Poland
| | - Jacek W Morzycki
- Institute of Chemistry, University of Białystok, Ciołkowskiego 1K, 15-245 Białystok, Poland.
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