5β-雙氫睪酮
化合物
5β-雙氫睪酮(英語:5β-Dihydrotestosterone,簡稱為5β-DHT,也稱為5β-雄甾烷-17β-醇-3-酮,5β-androstan-17β-ol-3-one,或本膽烷-17β-醇-3-酮,etiocholan-17β-ol-3-one)是一種本膽烷類(5β-雄烷)甾體物質,和睪酮的無雄激素活性的代謝產物,由肝臟和骨髓中的5β還原酶生成[1][2],同時也是生成3α-本膽烷二醇和3β-本膽烷二醇(分別由3α-和3β-羥基類固醇脫氫酶催化)的底物,之後再分別轉化為本膽烷醇酮和表本膽烷醇酮(由17β-羥基類固醇脫氫酶催化)[3][4]。和其表觀異構體5α-雙氫睪酮(5α-DHT或簡稱DHT)不同,5β-DHT只有非常弱的結合雄激素受體的能力[1]。作為主要的睪酮代謝產物,5β-DHT的A環和B環形之間的「順式」結構使兩個環在空間上形成了一個角度,故而缺乏了雄激素活性[5]。5β-DHT和5α-DHT的另一個不同點是,5β-DHT還缺乏神經甾體活性[6][7]但其代謝產物,本膽烷醇酮卻有神經甾體活性[8][9]。
5β-雙氫睪酮 | |
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IUPAC名 (5R,8R,9S,10S,13S,14S,17S)-17-Hydroxy-10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one | |
系統名 (1S,2R,7R,10R,11S,14S,15S)-14-hydroxy-2,15-dimethyltetracyclo[8.7.0.02,7.011,15]heptadecan-5-one (1S,2R,7R,10R,11S,14S,15S)-2,15-二甲基-14-羥基四環[8.7.0.02,7.011,15]-5-十七酮 | |
別名 | 5β-Androstan-17β-ol-3-one; Etiocholan-17β-ol-3-one; 5β-Dihydrotestosterone; 5β-DHT |
識別 | |
CAS號 | 571-22-2 |
PubChem | 11302 |
ChemSpider | 10827 |
SMILES |
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ChEBI | 2150 |
性質 | |
化學式 | C19H30O2 |
摩爾質量 | 290.44 g·mol−1 |
若非註明,所有數據均出自標準狀態(25 ℃,100 kPa)下。 |
另見
編輯參考文獻
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- ^ Shlomo Melmed; Kenneth S. Polonsky; P. Reed Larsen; Henry M. Kronenberg. Williams Textbook of Endocrinology. Elsevier Health Sciences. 30 November 2015: 711–. ISBN 978-0-323-29738-7.
- ^ Anita H. Payne; Matthew P. Hardy. The Leydig Cell in Health and Disease. Springer Science & Business Media. 28 October 2007: 186–. ISBN 978-1-59745-453-7.
- ^ B.A. Cooke; H.J. Van Der Molen; R.J.B. King. Hormones and their Actions. Elsevier. 1 November 1988: 173–. ISBN 978-0-08-086077-0.
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- ^ Abraham Weizman. Neuroactive Steroids in Brain Function, Behavior and Neuropsychiatric Disorders: Novel Strategies for Research and Treatment. Springer Science & Business Media. 1 February 2008: 210–. ISBN 978-1-4020-6854-6.
- ^ Li P, Bracamontes J, Katona BW, Covey DF, Steinbach JH, Akk G. Natural and enantiomeric etiocholanolone interact with distinct sites on the rat alpha1beta2gamma2L GABAA receptor. Mol. Pharmacol. June 2007, 71 (6): 1582–90. PMC 3788649 . PMID 17341652. doi:10.1124/mol.106.033407.
- ^ Kaminski RM, Marini H, Kim WJ, Rogawski MA. Anticonvulsant activity of androsterone and etiocholanolone. Epilepsia. June 2005, 46 (6): 819–27. PMC 1181535 . PMID 15946323. doi:10.1111/j.1528-1167.2005.00705.x.