Journal of the Chemical Society. Perkin transactions I p. 2277 - 2281 (1981)
Update date:2022-07-30
Topics:
Kobayashi, Yoshimasa
Ogawa, Muneharu
Ogihara, Yukio
Reagent A (exact composition unknown) was obtained from a mixture of CrO3, pyridine, and BunOH saturated with water.The reaction of the oleanane triterpenoid glucosides (1), (4), and (5) with reagent A gave 11-oxo-compounds (3) and (6), which indicated that this reagent is useful for the oxidation of an allyl alcohol and an allyl ether.On the other hand, the reaction of oleanane triterpenoids (11), (13), (14), and (15) with reagent A gave 16-oxo-derivatives (9), (16), (17), and (18), while compounds (19) and (22) with this reagent gave 21-oxo-derivatives (24) and (25).Reagent A is also very useful for the selective oxidation of 16- and 21-axial hydroxygroups.
View MoreJinan Hongfangde Pharmatech Co.,Ltd
Contact:86-531-88870908
Address:F Bldg. West Unit North Area of Univ. Tech. Garden Xinyu Rd. Jinan New & High Tech Industry Development Zone Shandong, China
NanJing KaiHeng Chemical CO., LTD.
Contact:+86-25-85768391
Address:RM.1704, D, WANDA PLAZA, NO.110, MIDDLE JIANGDONG ROAD, NANJING, CHINA
Contact:86-25-84683399
Address:605, Phoenix Herui Plaza, No.389, South Taiping Road, Nanjing, China 210002
Contact:+86-21-6856-1349 523-87676172
Address:No16 . BinJiang Road . Taixing Economy Developing Area .JiangSu Province . China
Zhengzhou Yuanli Biological Technology Co., Ltd.
Contact:+86-371-67897870/67897895
Address:No. 38, Qingyang Street, Zhengzhou, Henan, China
Doi:10.1016/0022-328X(94)05264-C
(1995)Doi:10.1246/cl.180857
(2019)Doi:10.1039/c4ce00835a
(2014)Doi:10.1107/S010827019400898X
(1995)Doi:10.1246/cl.140022
(2014)Doi:10.1002/jhet.2393
(2016)
