C19-Steroids as androgen receptor modulators: Design, discovery, and structure-activity relationship of new steroidal androgen receptor antagonists
摘要:
Dehydroepiandrosterone (DHEA), the most abundant steroid in human circulating blood, is metabolized to sex hormones and other C-19-steroids. Our previous collaborative study demonstrated that androst-5-ene-3 beta,17 beta-diol (Adiol) and androst-4-ene-3,17-dione (Adione), metabolites of DHEA, can activate androgen receptor (AR) target genes. Adiol is maintained at a high concentration in prostate cancer tissue; even after androgen deprivation therapy and its androgen activity is not inhibited by the antiandrogens currently used to treat prostate cancer patients. We have synthesized possible metabolites of DHEA and several synthetic analogues and evaluated their role in androgen receptor transactivation to identify AR modulators. Steroids with low androgenic potential in PC-3 cell lines were evaluated for anti-dihydrotestosterone (DHT) and anti-Adiol activity. We discovered three potent antiandrogens: 3 beta-acetoxyandrosta-1,5-diene-17-one 17-ethylene ketal (ADEK), androsta-1,4-diene-3,17-dione 17-ethylene ketal (OAK), and 3 beta-hydroxyandrosta-5,16-diene (HAD) that antagonized the effects of DHT as well as of Adiol on the growth of LNCaP cells and on the expression of prostate-specific antigen (PSA). In vivo tests of these compounds will reveal their potential as potent antiandrogens for the treatment of prostate cancer. (c) 2006 Elsevier Ltd. All rights reserved.
Hydroboration of steroidal-1,5-dien-3.BETA.-ols: A general procedure for the introduction of a hydroxyl group at 1.ALPHA.-position of the 3-oxygenated steroids.
作者:CHIKARA KANEKO、AKIKO SUGIMOTO、SACHIKO YAMADA、MASAYUKI ISHIKAWA、SATOSHI SASAKI、TATSUO SUDA
DOI:10.1248/cpb.22.2101
日期:——
The procedure used for the preparation of 1α-hydroxycholesterol from cholesta-1, 4-dien-3-one was applied to 17, 17-ethylenedioxyandrosta-1, 4-dien-3-one and 20, 20-ethylenedioxypregna-1, 4-dien-3-one. The successful results described in this paper serve to provide a basis for evaluation of wide scope of this procedure for the introduction of a hydroxyl group at 1α-position of 3-oxygenated steroid derivatives. The procedure consists of three steps starting from 3-keto-△1, 4-steroids available readily from 3-oxygenated steroids : 1) deconjugation to 3-keto-△1, 5-steroids, 2) reduction with metalhydride to 3β-hydroxy-△1, 5-steroids, and 3) hydroboration to 1α, 3β-dihydroxy-△5-steroids. This paper also includes definite identification of the final and intermediate compounds in the procedure and interpretation of their mass and nuclear magnetic resonance spectroscopic behaviors.
Antiandrogens with marginal agonist activity and methods of use
申请人:——
公开号:US20040242618A1
公开(公告)日:2004-12-02
The instant invention provides potent antiandrogen compounds, such as 3&bgr;-acetoxyandrost-1,5-diene-17-ethylene ketal and 3&bgr;-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.
The instant invention provides potent antiandrogen compounds, such as 3β-acetoxyandrost-1,5-diene-17-ethylene ketal and 3β-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.
The instant invention provides potent antiandrogen compounds, such as 3β-acetoxyandrost-1,5-diene-17-ethylene ketal and 3β-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.
Steroids having 1,8-unsaturation and formulations comprising same
申请人:Hollis-Eden Pharmaceuticals, Inc.
公开号:US07514420B2
公开(公告)日:2009-04-07
The instant invention provides potent antiandrogen compounds, such as 3β-acetoxyandrost-1,5-diene-17-ethylene ketal and 3β-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.