Journal of Organic Chemistry p. 5207 - 5214 (1983)
Update date:2022-08-05
Topics:
Catalan, Cesar A. N.
Kokke, W. C. M. C.
Duque, Carmenza
Djerassi, Carl
Both epimers at C-24 of 5,28-stigmastadien-3β-ol (24-vinylcholesterol) were synthesized from 5,24(28)-ergostadien-3β-ol, and their configuration at C-24 was determined by conversion into clionasterol and sitosterol. 24-Vinylcholesterol has not yet been found in nature, but it is a possible intermediate in the biosynthesis of 24-propylcholesterol and 24-propylidenecholesterol.A structurally related compound, 5,28-stigmastadiene-3β,24ξ-diol (saringosterol), first isolated from a brown seaweed, was shown to be a mixture of epimers at C-24.They were seperated and their configuration was determined by correlation with fucosterol and isofucosterol 24(28)-epoxides of known stereochemistry.
View MoreShenzhen Feiming Science and Technology Co,. Ltd
Contact:+86-755-85232577
Address:#B2309, Fenglin International Center ,Jixiang Road, Longcheng street, LongGang District, Shenzhen city, Guangdong province, China.
website:http://www.uvchemkeys.com
Contact:0086-021-58785816
Address:RM2607 Building No.1 Guosheng, Lane 388, Zhongjiang Road, Putuo District, Shanghai 200062 China
Shaanxi HuaTai Bio-fine chemical company Ltd
Contact:86-029-87862197
Address:No. 5, 3rd Floor, 29 Yanta North Road, Beilin Dist.
Changsha Nutritopper Bio Technology Co.,Ltd.
Contact:+86-731-87803543
Address:East 1st Street, Baima Road, Ningxiang County
Kunshan Yalong Trading Co,.Ltd
Contact:86-512-57621185
Address:805-807 Room Hongqiao Mansion ,1088 West Qianjin Road, Kunshan, Jiangsu,China
Doi:10.1002/hlca.200590255
(2005)Doi:10.1021/ja051744l
(2005)Doi:10.1021/ja00539a025
(1980)Doi:10.1515/chempap-2015-0246
(2016)Doi:10.3390/70200145
(2002)Doi:10.1021/ol052891r
(2006)