Journal of the Chemical Society. Perkin transactions I p. 1713 - 1718 (1987)
Update date:2022-08-03
Topics:
Uomori, Atsuko
Seo, Shujiro
Sato, Tomohiro
Yoshimura, Yohko
Takeda, Ken'ichi
Yamogenin acetate (1) was isolated from crude diosgenin acetate and converted into (25S)-26-hydroxycholesterol (6a).The absolute configuration at C-25 of (6a) was determined by X-ray crystallography. (25R)-<26-(2)H1>Cholesterol (10) was prepared by reduction of the 26-tosyloxy group by LiAl(2)H4.Reverse-phase h.p.l.c. resolution without derivatization was developed for the diastereoisomers, (25R)- and (25S)-26-hydroxycholesterol.The (+)- or (-)-MTPA esters of these diastereoisomers showed distinctive 1H n.m.r. signals for 26-H.
View MoreContact:+86-15850770348
Address:51 OF XIANGFANGCUN ROAD, Nanjing 210002, China
Nanjing Ruizhi Industry & Technologh Co.，Ltd.
Contact:+86-25-86808110
Address:441-4-A5,NO.12 Longzang Avenue,Yuhuatai District,210039,Nanjing
Wuxi D-Stone International Co., Ltd.
Contact:+86-510-82740567
Address:21F Hengtong Int'l Centre, 215Zhongshan Road, Wuxi, Jiangsu,China
Nanjing Fubang Chemical Co.,Ltd
Contact:+86-25-83179199
Address:5F,Tianzheng international plaza,No399 Zhongyang Road ,Nanjing China
Jiangsu King Road New Materials Co., Ltd.
website:http://www.jskingroad.com
Contact:0519-85720726 0519-85720721 13584535752
Address:No.1,Weihua Road,Xinbei District,Changzhou City,Jiangsu Province
Doi:10.1002/hlca.19870700327
(1987)Doi:10.1039/P19730000649
(1973)Doi:10.1039/c39930001248
(1993)Doi:10.1021/jm00226a009
(1976)Doi:10.1016/S0040-4039(00)90490-8
(1964)Doi:10.1016/j.bmcl.2014.10.026
(2014)
