Journal of the Chemical Society. Perkin transactions I p. 1819 - 1822 (1993)
Update date:2022-08-03
Topics:
Hazra, Braja G.
Pore, Vandana S.
Joshi, Padmakar L.
A streoselective synthesis of 6-oxo-23,24-dinor-5α-cholan-2α,3α,22-triyl triacetate 9 was achieved in 44percent overall yield in nine steps starting from 3β-hydroxyandrost-5-en-17-one 8.The important features of this synthesis are the modified Wittig reaction on the 17-oxo steroid 8 and the stereospecific generation of the chiral centre at C-20 by a resin-catalysed ene reaction on (Z)-3β, p-tolylsulfonyloxypregna-5,17(20)-diene 11.
View MorePINGYUAN SIHUAN PHARMACEUTICAL CO., LTD
Contact:+86-531-55696072
Address:#2766,yinxiu Road, Economic Development Zone, Pingyuan Country, Shandong Province, China.
Suzhou Sibian Chemical Technology Co., Ltd
website:http://www.sibianpharm.com
Contact:+8618169181984,+8618013186906
Address:Room1404,BuildingA,Jiabao Square No.323 Baodai East Road,Wuzhong District,Suzhou Jiangsu China (215128)
Shandong Xinhua Pharmaceutical Co.,Ltd
website:http://www.xhzy.com
Contact:+86-533-2196801
Address:1 lutai road,zhangdian dis,Zibo City
Taizhou Crene Biotechnology co.ltd
Contact:86-576-88813233 88205808
Address:Economic Developed Zone of Taizhou Zhejiang China
website:http://www.shtopchem.com/
Contact:0086-0576-87776998
Address:room no 1608,xuhui business building yude road,xujiahui street, xuhui district
Doi:10.1016/j.bmc.2015.07.035
(2015)Doi:10.1002/hlca.19330160177
(1933)Doi:10.1071/CH9670723
(1967)Doi:10.1021/jo00070a025
(1993)Doi:10.1021/jo00100a047
(1994)Doi:10.1016/S0040-4020(01)89404-7
(1994)