Various estrane derivatives 1 reacted with cerium ammonium nitrate (CAN) selectively and efficiently to provide 9 alpha,11 beta-defunctionalized derivatives 2, which were subsequently deoxygenated at C-9 with triethylsilane/boron trifluoride etherate to the desired target 11 beta-nitratoestranes 3a, 3b, and 5. When examined for estrogenic and postcoital antifertility activity, 11 beta-nitrates 2c, 2d, and 3b most notably displayed more potent oral activity than did ethynylestradiol.
[EN] ORALLY ACTIVE DERIVATIVES OF 1,3,5(10)-ESTRATRIENE<br/>[FR] DERIVES DE 1,3,5(10)-ESTRATRIENE ACTIFS PAR VOIE ORALE
申请人:THE GOVERNMENT OF THE UNITED STATES OF AMERICA, represented by THE SECRETARY OF THE DEPARTMENT OF HEALTH AND HUMAN SERVICES
公开号:WO1995007925A1
公开(公告)日:1995-03-23
(EN) 17$g(b)-nitrate and 11$g(b),17$g(b)-dinitrate esters of estradiol which exibit elevated estrogenic and postcoital contraceptive activities are disclosed. A process for their manufacture and their use in pharmaceuticals is also disclosed.(FR) L'invention concerne décrit des dinitrate-17$g(b)-nitrate et 11$g(b)-,17$g(b)-ester d'estradiol, qui présentent une activité oestrogénique et contraceptive postcoïtale élevée. Un procédé pour leur fabrication et leur utilisation dans des produits pharmaceutiques est également décrit.
作者:Richard H. Peters、David F. Crowe、Mitchell A. Avery、Wesley K. M. Chong、Masato Tanabe
DOI:10.1021/jm00130a014
日期:1989.10
Various estrane derivatives 1 reacted with cerium ammonium nitrate (CAN) selectively and efficiently to provide 9 alpha,11 beta-defunctionalized derivatives 2, which were subsequently deoxygenated at C-9 with triethylsilane/boron trifluoride etherate to the desired target 11 beta-nitratoestranes 3a, 3b, and 5. When examined for estrogenic and postcoital antifertility activity, 11 beta-nitrates 2c, 2d, and 3b most notably displayed more potent oral activity than did ethynylestradiol.
Golubovskaya; Rzheznikov, Russian Journal of Organic Chemistry, 1997, vol. 33, # 4, p. 559 - 560