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Borah P, Sahoo BM, Shivling VD, Banik BK. Microwave-Induced Ugi-Four Component Reactions: Synthesis of New Hetero- Steroid-Amino Acid Conjugates. Curr Org Synth 2020; 17:641-647. [PMID: 32842943 DOI: 10.2174/1570179417666200825164654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/11/2020] [Accepted: 07/24/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Aza-steroids are an important class of compounds because of their numerous biological activities. The hetero steroids have different hydrogen bonding ability and hydrophobicity in comparison to steroids. MATERIALS AND METHODS Microwave-induced synthesis of a novel type of hybrid hetero-steroid amine conjugates, following Ugi-four component reactions of steroidal amines with alanine and valine methyl esters as amino acid residues is described. Specifically, hetero-steroid-amino acid conjugate based on D-ring fused hetero steroidal amine, hetero-steroid-amino acid conjugate based on A-ring hetero steroidal amine, and hetero-steroidamino acid conjugate based on B-ring hetero steroidal amine are synthesized. RESULTS AND DISCUSSION The yield of the products under microwave-induced process was considerably higher than that obtained by the conventional method. In contrast to the conventional method for the synthesis of these molecules, microwave-induced method has several advantages. CONCLUSION These include rapid reaction, a superior yield of the product, minimum side reaction, and economical microwave-induced process.
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Affiliation(s)
| | - Biswa Mohan Sahoo
- Roland Institute of Pharmaceutical Sciences, Berhampur- 760010, Odisha, India
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2
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Recent Progress in Steroid Synthesis Triggered by the Emergence of New Catalytic Methods. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901466] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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3
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Novel steroidal 1,3,4-thiadiazines: Synthesis and biological evaluation in androgen receptor-positive prostate cancer 22Rv1 cells. Bioorg Chem 2019; 91:103142. [PMID: 31400555 DOI: 10.1016/j.bioorg.2019.103142] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 12/20/2022]
Abstract
A flexible approach to previously unknown spirofused and linked 1,3,4-thiadiazine derivatives of steroids with selective control of heterocyclization patterns is disclosed. (N-Arylcarbamoyl)spiroandrostene-17,6' [1,3,4]thiadiazines and (N-arylcarbamoyl)17-[1',3',4']thiadiazine-substituted androstenes, novel types of heterosteroids, were prepared from 16β,17β-epoxypregnenolone and 21-bromopregna-5,16-dien-20-one in good to high yields by the treatment with oxamic acid thiohydrazides. The synthesized compounds were screened for antiproliferative activity against the human androgen receptor-positive prostate cancer cell line 22Rv1. Most of (N-arylcarbamoyl)17-[1',3',4']thiadiazine-substituted androstenes exhibit better antiproliferative potency (IC50 = 2.1-6.6 µM) than the antiandrogen bicalutamide. Compounds 7d with IC50 = 3.0 μM and 7j with IC50 = 2.1 μM proved to be the most active in the series under study. Lead synthesized compound 7j downregulates AR expression and activity in 22Rv1 cells. NF-κB activity is also blocked in 7j-treated 22Rv1 cells. Apoptosis is considered as a possible mechanism of 7j-induced cell death.
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C. Boruah R, S. Nongthombam G. Divergent Synthesis of Steroid Analogs from Steroidal β-Formylenamides, Conjugated Enones and β-Formylvinyl Halides. HETEROCYCLES 2019. [DOI: 10.3987/rev-18-898] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Liu X, Chen J, Ma T. Catalytic dehydrogenative aromatization of cyclohexanones and cyclohexenones. Org Biomol Chem 2018; 16:8662-8676. [DOI: 10.1039/c8ob02351d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Prompted by the scant attention paid by published literature reviews to the comprehensive catalytic dehydrogenative aromatization of cyclohexa(e)nones, this review describes recent methods developed to-date involving transition-metal-catalyzed oxidative aromatization and metal-free strategies for the transformation of cyclohexa(e)nones to substituted phenols.
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Affiliation(s)
- Xueli Liu
- College of Material and Chemical Engineering
- Chuzhou University
- Chuzhou
- China
| | - Jun Chen
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
- Department of Biomedical and Pharmaceutical Sciences
| | - Tianlin Ma
- College of Material and Chemical Engineering
- Chuzhou University
- Chuzhou
- China
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6
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Quest for steroidomimetics: Amino acids derived steroidal and nonsteroidal architectures. Eur J Med Chem 2017; 133:139-151. [DOI: 10.1016/j.ejmech.2017.03.054] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 11/18/2022]
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7
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Abdu-Allah HHM, Chang TT, Li WS. Synthesis of B- and C-ring-modified lithocholic acid analogues as potential sialyltransferase inhibitors. Steroids 2016; 112:54-61. [PMID: 27154753 DOI: 10.1016/j.steroids.2016.04.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 04/11/2016] [Accepted: 04/29/2016] [Indexed: 10/21/2022]
Abstract
In order to identify structural features of lithocholic acid (LCA) critical for inhibition of the enzyme sialyltransferase (ST) novel analogues with modifications of the skeleton (7-9, 16-18 and 20) were designed and synthesized. Methyl 3α-acetoxy-7-oxo-cholanate (1), methyl 3α-acetoxy-12-oxo-cholanate (2) and methyl 3α,7α-diacetoxy-12-oxo-cholanate (3) were subjected to Baeyer-Villiger oxidation to provide homolactones (7-9) or to the Beckmann rearrangement of the corresponding oximes to give homolactams (16-18). Both reactions proceed regio- and stereoselectively. Ring B homolog of lithocholic acid (20) was efficiently synthesized. Among these compounds, 7, 9 and 16 were found to have the significant activity, with IC50 values ⩽3μM against α-2,6-(N)-ST selectively, which are 5-fold lower than that of Lith-O-Asp. Given the reality that LCA and its analogue, Lith-O-Asp, have been revealed to improve inhibitory efficacy of ST and to have a wide range of antimetastatic activities in different human cancer cells, the up-to-date findings have noteworthy pharmacological significance as they open a promising path to the improvement of a prospective molecular targeted application of modified LCA analogues as agents for the treatment of cancer metastasis.
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Affiliation(s)
| | - Tzu Ting Chang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Wen-Shan Li
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan; Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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8
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Abdelkhalik AM, Paul NK, Jha A. Concise synthesis of 12a-methyl-11-aryl-1,2-dihydrobenzo[f]pyrrolo[1,2-a]quinolin-3(12aH)-ones as racemic 14-azaestrogen analogs. Steroids 2015; 98:107-13. [PMID: 25804763 DOI: 10.1016/j.steroids.2015.03.010] [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: 10/28/2014] [Revised: 03/04/2015] [Accepted: 03/12/2015] [Indexed: 10/23/2022]
Abstract
A concise method for the synthesis of 14-azasteroid analogs with angular methyl group at C-13 of the steroidal nucleus has been reported in this paper. We have developed an interesting cascade reaction of arylacetylenes and N-(naphthalen-2-yl)pent-4-ynamides under gold (III)-catalysis to produce novel tetracyclic 12a-methyl-11-aryl-1,2-dihydrobenzo[f]pyrrolo[1,2-a]quinolin-3(12aH)-ones which may be viewed as 14-azaestrogen analogs.
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Affiliation(s)
| | - Nawal K Paul
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
| | - Amitabh Jha
- Department of Chemistry, Acadia University, Wolfville, NS, Canada.
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9
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Mahdi KM, Abdul-Reda NA, Al-Masoudi NA. Exploration of new 3α-pregnenolone ester analogues via Mitsunobu reaction, their anti-HIV activity and molecular modeling study. ACTA ACUST UNITED AC 2015. [DOI: 10.5155/eurjchem.6.1.1-7.1139] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Abstract
The abuse of unknown designer androgenic anabolic steroids (AAS) is considered to be an issue of significant importance, as AAS are the choice of doping preference according to World Anti-doping Agency statistics. In addition, unknown designer AAS are preferred since the World Anti-doping Agency mass spectrometric identification criteria cannot be applied to unknown molecules. Consequently, cheating athletes have a strong motive to use designer AAS in order to both achieve performance enhancement and to escape from testing positive in anti-doping tests. To face the problem, a synergy is required between the anti-doping analytical science and sports anti-doping regulations. This Review examines various aspects of the designer AAS. First, the structural modifications of the already known AAS to create new designer molecules are explained. A list of the designer synthetic and endogenous AAS is then presented. Second, we discuss progress in the detection of designer AAS using: mass spectrometry and bioassays; analytical data processing of the unknown designer AAS; metabolite synthesis; and, long-term storage of urine and blood samples. Finally, the introduction of regulations from sports authorities as preventive measures for long-term storage and reprocessing of samples, initially reported as negatives, is discussed.
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Lyall CL, Sato M, Uosis-Martin M, Asghar SF, Jones MD, Williams IH, Lewis SE. C-H functionalization of sp(3) centers with aluminum: a computational and mechanistic study of the Baddeley reaction of decalin. J Am Chem Soc 2014; 136:13745-53. [PMID: 25196493 DOI: 10.1021/ja5062246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Decalin undergoes reaction with aluminum trichloride and acetyl chloride to form a tricyclic enol ether in good yield, as first reported by Baddeley. This eye-catching transformation, which may be considered to be an aliphatic Friedel-Crafts reaction, has not previously been studied mechanistically. Here we report experimental and computational studies to elucidate the mechanism of this reaction. We give supporting evidence for the proposition that, in the absence of unsaturation, an acylium ion acts as a hydride acceptor, forming a tertiary carbocation. Loss of a proton introduces an alkene, which reacts with a further acylium ion. A concerted 1,2-hydride shift/oxonium formation, followed by elimination, leads to formation of the observed product.
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13
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Halimehjani AZ, Namboothiri INN, Hooshmand SE. Nitroalkenes in the synthesis of carbocyclic compounds. RSC Adv 2014. [DOI: 10.1039/c4ra04069d] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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14
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Synthesis of progesterone derivatives and evaluation of their efficiency as pneumococcal vaccines. Med Chem Res 2014. [DOI: 10.1007/s00044-013-0894-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Cui J, Lin Q, Gan C, Yao Q, Su W, Huang Y. Synthesis and cytotoxic activity of some 4,6-diaza-A,B-dihomo-steroid bilactams. Steroids 2014; 79:14-8. [PMID: 24200959 DOI: 10.1016/j.steroids.2013.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 10/15/2013] [Accepted: 10/23/2013] [Indexed: 11/25/2022]
Abstract
Using cholesterol, stigmasterol and sitosterol as starting materials, some 4,6-diaza-A,B-dihomo-steroid bilactams were synthesized via two different synthetic routes by oxidation, reduction, oximation, Beckman rearrangement, etc. The cytotoxic activity of the synthesized compounds against SGC 7901 (human ventriculi carcinoma), Bel-7404 (human liver carcinoma), HeLa (human cervical carcinoma) and HT-29 (colonic carcinoma) cancer cells were investigated. The results showed that compounds 2 and 7b displayed a good cytotoxic activity to the SGC 7901, Bel 7404 and HeLa tumor cell lines with the IC50 values of 11.6, 16.4, 13.9 and 13.1, 21.8, 13.1 μmol/L, respectively. Their cytotoxic activity is almost same as cisplatin to these cells. The information obtained from the studies may be useful for the design of novel chemotherapeutic drugs.
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Affiliation(s)
- Jianguo Cui
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Qifu Lin
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Chunfang Gan
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Qiucui Yao
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Wei Su
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Yanmin Huang
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China.
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Chandrasekhar B. α- and β-Mercaptoalkanoic Acids: Versatile Synthons in the Syntheses of Thiasteroid Analogues and Selenathiadiazoles. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.796474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Kopel LC, Ahmed MS, Halaweish FT. Synthesis of novel estrone analogs by incorporation of thiophenols via conjugate addition to an enone side chain. Steroids 2013; 78:1119-25. [PMID: 23899492 DOI: 10.1016/j.steroids.2013.07.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/09/2013] [Accepted: 07/18/2013] [Indexed: 12/24/2022]
Abstract
Functionalized estrogen analogs have received interest due to their unique and differing biological activity compared to their parent compounds. The synthesis of a new class of 3-methoxyestrone analogs functionalized at the C17 position possessing both alkyl and aryl substituted α,β-unsaturated ketones is described, along with their thiophenol conjugate addition products.
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Affiliation(s)
- Lucas C Kopel
- Department of Chemistry & Biochemistry, South Dakota State University, Brookings, SD, USA
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18
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Vosooghi M, Yahyavi H, Divsalar K, Shamsa H, Kheirollahi A, Safavi M, Ardestani SK, Sadeghi-Neshat S, Mohammadhosseini N, Edraki N, Khoshneviszadeh M, Shafiee A, Foroumadi A. Synthesis and In vitro cytotoxic activity evaluation of (E)-16-(substituted benzylidene) derivatives of dehydroepiandrosterone. ACTA ACUST UNITED AC 2013; 21:34. [PMID: 23635011 PMCID: PMC3673839 DOI: 10.1186/2008-2231-21-34] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/21/2013] [Indexed: 11/17/2022]
Abstract
Background and the purpose of the study Modified androsterone derivatives are class of steroidal compounds with potential anticancer properties. Various steroidal derivatives containing substitution at position 16 have shown diversified pharmacological activities. In the present study, a new series of cytotoxic 16-(substituted benzylidene) derivatives of dehydroepiandrosterone (DHEA) were synthesized and evaluated against three different cancer cell lines. Methods The cytotoxic 16-(substituted benzylidene) derivatives of DHEA were synthesized via aldol condensation of DHEA with corresponding benzaldehyde derivatives. The cytotoxic activity of synthesized derivatives was evaluated against three different cancer cells including KB, T47D and SK-N-MC cell lines by MTT reduction colorimetric assay. Results The results indicated that 16-(substituted benzylidene) derivatives of DHEA could be served as a potent anti-cancer agent. The 3-cholro benzylidene derivatives of DHEA was the most potent synthesized derivative especially against KB and T47D cell lines (IC50 values were 0.6 and 1.7 μM; respectively). Conclusion The cytotoxic potential of novel benzylidene derivatives of DHEA is mainly attributed to the position and nature of the substituted group on the benzylidene pendant.
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Affiliation(s)
- Mohsen Vosooghi
- Department of Medicinal Chemistry, Faculty of Pharmacy & Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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20
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Martínez MD, Edelsztein VC, Durán FJ, Di Chenna PH, Burton G. Synthesis of 6-azaprogesterone and 19-hydroxy-6-azasteroids. Steroids 2013; 78:34-7. [PMID: 23127817 DOI: 10.1016/j.steroids.2012.10.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Revised: 09/29/2012] [Accepted: 10/10/2012] [Indexed: 11/26/2022]
Abstract
19-Hydroxy-6-azapregnanes were obtained from pregnenolone via a 7-azido-5-oxo-6-nor-5,7-secopregnane intermediate. The 6-azapregnane core was built in good yield in a straightforward way from the secosteroid, by means of a Staudinger (aza-Wittig) reaction. Finally the 19-hydroxy-6-azapregnane was transformed into 19-hydroxy-6-azaprogesterone (that cyclized spontaneously to the 19→3 hemiketal) and 6-azaprogesterone. The 6-azapregnanes lacked agonistic/antagonistic activity on the progesterone receptor.
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Affiliation(s)
- Mario D Martínez
- Departamento de Química Orgánica and UMYMFOR-CONICET-UBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina
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Lyall CL, Uosis-Martin M, Lowe JP, Mahon MF, Pantoş GD, Lewis SE. Aliphatic C–H activation with aluminium trichloride–acetyl chloride: expanding the scope of the Baddeley reaction for the functionalisation of saturated hydrocarbons. Org Biomol Chem 2013; 11:1468-75. [DOI: 10.1039/c2ob26765a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li J, Huang Y, Guan XL, Li J, Deng SP, Wu Q, Zhang YJ, Su XJ, Yang RY. Anti-hepatitis B virus constituents from the stem bark of Streblus asper. PHYTOCHEMISTRY 2012; 82:100-9. [PMID: 22818524 DOI: 10.1016/j.phytochem.2012.06.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 06/20/2012] [Accepted: 06/25/2012] [Indexed: 05/21/2023]
Abstract
Seven compounds, (7'S,8'S)-trans-streblusol A, (7'R,8'S)-erythro-streblusol B, (7'S,8'S)-threo-streblusol B, 8'R-streblusol C, streblusquinone, (8R,8'R)-streblusol D, and streblusol E, along with 15 known compounds (8-22) were isolated from the n-butanol-soluble part of the MeOH extract of stem bark of Streblus asper. Their structures were elucidated through application of extensive spectroscopic methods, including ESI-MS and 2D NMR spectroscopy (HMQC and HMBC). The stereochemistry at the chiral centers was determined using CD spectra, as well as analyses of coupling constants and optical rotation data. The isolated lignans and allylbenzene derivatives were evaluated for their anti-HBV activities in vitro using the HBV transfected Hep G2.2.15 cell line. The most active compounds, magnolol and 9-β-xylopyranosyl-isolariciresinol, exhibited significant anti-HBV activities with IC(50) values of 2.03 and 6.58μM for secretion of HBsAg, with no cytotoxicity, and of 3.76 and 24.86μM for secretion of HBeAg, with no cytotoxicity.
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Affiliation(s)
- Jun Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Ministry of Education of China), School of Environment and Resource of Guangxi Normal University, Guilin, PR China.
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Li B, Lai YC, Zhao Y, Wong YH, Shen ZL, Loh TP. Synthesis of 3-Oxaterpenoids and Its Application in the Total Synthesis of (±)-Moluccanic Acid Methyl Ester. Angew Chem Int Ed Engl 2012; 51:10619-23. [DOI: 10.1002/anie.201205981] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Indexed: 11/10/2022]
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Li B, Lai YC, Zhao Y, Wong YH, Shen ZL, Loh TP. Synthesis of 3-Oxaterpenoids and Its Application in the Total Synthesis of (±)-Moluccanic Acid Methyl Ester. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205981] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Li J, Tang MT, Wu Q, Chen H, Niu XT, Guan XL, Li J, Deng SP, Su XJ, Yang RY. Water-soluble Constituents of the Heartwood of Streblus asper. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700513] [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
A new lignan, (7′ R,8′ R)- threo-strebluslignanol-2- O-β-D-glucopyranoside, along with 8 known compounds (2–9) were isolated from the water-soluble part of the MeOH extract of the heartwood of Streblus asper. Their structures were elucidated through various spectroscopic methods, including 1D NMR (1H NMR, 13C NMR), 2D NMR (HMQC, HMBC, and NOESY), and HRMS. The stereochemistry at the chiral centers was determined using the CD spectrum, as well as analyses of coupling constants and optical rotation data. In the preliminary bioassay, the isolated compounds did not show anti-HBV activities in vitro using the HBV transfected HepG2.2.15 cell line.
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Affiliation(s)
- Jun Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Ministry of Education of China), School of Environment and Resource of Guangxi Normal University, Guilin 541004, P. R. China
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, P. R. China
| | - Mao-Tong Tang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Ministry of Education of China), School of Environment and Resource of Guangxi Normal University, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, Guilin 541004, P. R. China
| | - Qiang Wu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, P. R. China
| | - Hong Chen
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, P. R. China
| | - Xiao-Tao Niu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, P. R. China
| | - Xin-Lan Guan
- Peoples’ Hospital of Pubei, Pubei 535300, P. R. China
| | - Jian Li
- Peoples’ Hospital of Pubei, Pubei 535300, P. R. China
| | - Sheng-Ping Deng
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, P. R. China
| | - Xiao-Jian Su
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Ministry of Education of China), School of Environment and Resource of Guangxi Normal University, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, Guilin 541004, P. R. China
| | - Rui-Yun Yang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, P. R. China
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Gan C, Cui J, Huang Y, Jia L, Wei W. Synthesis and antiproliferative activity of some steroidal lactone compounds. Steroids 2012; 77:255-9. [PMID: 22155529 DOI: 10.1016/j.steroids.2011.11.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 11/22/2011] [Accepted: 11/26/2011] [Indexed: 11/21/2022]
Abstract
Using cholesterol as starting material, some steroidal lactone compounds with the structures of 3-substituted-6-oxo-7-oxa-B-homo-cholestane or 3-substituted-7-oxo-6-oxa-B-homo-cholestane were synthesized by oxidation, reduction, Baeyer-Villiger reaction and condensation reaction. The cytotoxicity of these compounds against MGC 7901 (human gastric carcinoma), HeLa (human cervical carcinoma) and SMMC 7404 (human liver carcinoma) cells was investigated. Our results showed that the synthesized compounds displayed a distinct cytotoxicity against these cancer cells. In particular, compounds 8 and 9 have similar cytotoxic capability as cisplatin does. The information obtained from the studies may be useful for the design of novel chemotherapeutic drugs.
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Affiliation(s)
- Chunfang Gan
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530022, China
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Chen H, Li J, Wu Q, Niu XT, Tang MT, Guan XL, Li J, Yang RY, Deng SP, Su XJ. Anti-HBV activities of Streblus asper and constituents of its roots. Fitoterapia 2012; 83:643-9. [PMID: 22305944 DOI: 10.1016/j.fitote.2012.01.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 01/15/2012] [Accepted: 01/18/2012] [Indexed: 12/13/2022]
Abstract
The extracts from leaves, heartwood, barks and roots of the Streblus asper were investigated for anti-HBV activities, separately. The results suggested that the MeOH extracts of the heartwood, barks, and roots exhibited good anti-HBV activities. Further investigations displayed that ethyl acetate and n-butanol soluble parts of their MeOH extracts showed more significant anti-HBV activities. Moreover, a new lignan, together with 11 known compounds, was isolated from n-butanol-soluble part of MeOH extract of the roots of S. asper. The structures were elucidated by spectroscopic methods, including 1D NMR ((1)H NMR, (13)C NMR), 2D NMR (HMQC, HMBC) and HR-EI-MS experiments. Compounds 1-3 were evaluated for their anti-HBV activities. Honokiol showed significant anti-HBV activity with IC(50) values of 3.14μM and 4.74μM for HBsAg and HBeAg with no cytotoxicity respectively, while lamivudine (3TC, positive control) exhibited weak anti-HBV activity with IC(50) values of 11.81μM and 25.80μM for HBsAg and HBeAg respectively.
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Affiliation(s)
- Hong Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, School of Environment and Resource of Guangxi Normal University, Guilin 541004, PR China
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Ibrahim-Ouali M, Hamze K, Rocheblave L. Synthesis of 12-oxa, 12-aza and 12-thia cholanetriols. Steroids 2011; 76:324-30. [PMID: 21163283 DOI: 10.1016/j.steroids.2010.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 11/29/2010] [Accepted: 12/08/2010] [Indexed: 10/18/2022]
Abstract
An efficient synthesis of 12-hetero steroids was achieved via a Baeyer-Villiger oxidation and a photolysis as the key steps. We set out to describe in this paper the first synthesis of 12-aza steroids. The characteristic (1)H and (13)C NMR spectroscopic features of the synthesized compounds are reported.
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Affiliation(s)
- Malika Ibrahim-Ouali
- Institut des Sciences Moléculaires de Marseille UMR 6263 CNRS, Université d'Aix Marseille III, Faculté des Sciences et Techniques de Saint Jérôme, Marseille, France.
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29
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Chen K, Liu C, Deng L, Xu G. A practical Delta 1-dehydrogenation of Delta 4-3-keto-steroids with DDQ in the presence of TBDMSCl at room temperature. Steroids 2010; 75:513-6. [PMID: 20226803 DOI: 10.1016/j.steroids.2010.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2010] [Revised: 03/02/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
Abstract
A mild and efficient Delta(1)-dehydrogenation of Delta(4)-3-keto-steroids with DDQ in the presence of tertbutyldimethylchlorosilane at room temperature was developed.
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Affiliation(s)
- Kaixiong Chen
- College of Chemistry and Chemical Engineering, Hunan Normal University, Yuelushan, Changsha 410081, China
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Affiliation(s)
- James R Hanson
- Department of Chemistry, University of Sussex, Brighton, Sussex, BN1 9QJ, UK
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Fragkaki AG, Angelis YS, Koupparis M, Tsantili-Kakoulidou A, Kokotos G, Georgakopoulos C. Structural characteristics of anabolic androgenic steroids contributing to binding to the androgen receptor and to their anabolic and androgenic activities. Applied modifications in the steroidal structure. Steroids 2009; 74:172-97. [PMID: 19028512 DOI: 10.1016/j.steroids.2008.10.016] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 10/21/2008] [Accepted: 10/29/2008] [Indexed: 11/21/2022]
Abstract
Anabolic androgenic steroids (AAS) are synthetic derivatives of testosterone introduced for therapeutic purposes providing enhanced anabolic potency with reduced androgenic effects. Androgens mediate their action through their binding to the androgen receptor (AR) which is mainly expressed in androgen target tissues, such as the prostate, skeletal muscle, liver and central nervous system. This paper reviews some of the wide spectrum of testosterone and synthetic AAS structure modifications related to the intended enhancement in anabolic activity. The structural features of steroids necessary for effective binding to the AR and those which contribute to the stipulation of the androgenic and anabolic activities are also presented.
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Affiliation(s)
- A G Fragkaki
- Doping Control Laboratory of Athens, Olympic Athletic Center of Athens Spyros Louis, Kifisias 37, 15123 Maroussi, Greece
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Kang FA, Chen X, Jain N, Allan G, Tannenbaum P, Lundeen S, Sui Z. Insight from molecular modeling into different conformation and SAR of natural steroids and unnatural 7-oxa-steroids. Bioorg Med Chem Lett 2008; 18:3687-90. [DOI: 10.1016/j.bmcl.2008.05.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Accepted: 05/19/2008] [Indexed: 11/15/2022]
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Abstract
This review provides the first overview on the isolation and structure elucidation of a class of isopimaric diterpenes: virescenols. An important part of this review deals with the structural modifications of virescenols leading to several different natural product frameworks.
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Affiliation(s)
| | - Ornelio Rosati
- Dipartimento di Chimica e Tecnologia del Farmaco, via del Liceo, 106132 Perugia, Italy
| | - Massimo Curini
- Dipartimento di Chimica e Tecnologia del Farmaco, via del Liceo, 106132 Perugia, Italy
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