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.
PETERS, RICHARD H.;CROWE, DAVID F.;AVERY, MITCHELL A.;CHONG, WESLEY K. M.+, J. MED. CHEM., 32,(1989) N0, C. 2306-2310
作者:PETERS, RICHARD H.、CROWE, DAVID F.、AVERY, MITCHELL A.、CHONG, WESLEY K. M.+