Journal of the Chemical Society. Perkin transactions I p. 64 - 72 (1981)
Update date:2022-07-30
Topics:
Cheung, H.T. Andrew
Coombe, Reginald G.
Sidwell, William T. L.
Watson, Thomas R.
Afroside (2) has the same carbohydrate as gomphoside (1), namely a 4,6-dideoxyhexosulose doubly linked to the aglycone at the 2α and 3β positions.It differs from gomphoside in having a 15β-hydroxy-group, the location of which is shown by n.m.r. (1H and 13C) and mass spectra, and is established by the formation of a 14,15-cyclic carbonate derivative (2e).The 14β,15β-diol group shows unusual inertness to glycol cleavage and to OO-isopropylidene derivative formation, in contrast with the behaviour of the 2',3'-diol in the carbohydrate, and the 2α,3β-diol in the genin, afrogenin (4).Degradation of the carbohydrate in afroside gave afrogenin (4), and 'anhydroafrogenin' (9) which is a 15-ketone with 14α-H.The conformation of the highly crowded ring D is studied using 1H and 13C n.m.r.
View MoreContact:886 2 2541 0022
Address:8 Fl., No. 11, Sec. 1, Chung Shan North Rd., Taipei, Taiwan R.O.C.
Zhangjiagang Golden Reach Fine Chemical Co.,LTD.
Contact:+86-512-6585 6968
Address:Changfu Road， Dongsha Chemical Industry Park, Zhangjiagang City, Jiangsu Province, China
Shanghai Massive Chemical Technology Co., Ltd.
website:http://www.massivechem.com/
Contact:+86 21 34943721
Address:Room 435, 4th floor, Building 9, No. 2568 Gudai Road,Minhang District, Shanghai,
Anhui Gusheng Import&Export CO.,LTD
Contact:86-551-63662296
Address:Jinzhai Road NO.162 ,hefei, china
Wuhan Soleado Technology Co.,Ltd.
Contact:86-2783341481 18971291927
Address:RM2405 Unit 1 Builing 1, Taiyin Tower, Changqing Road,Wuhan China
Doi:10.1016/S0040-4020(98)00011-8
(1998)Doi:10.1021/jo01215a002
(1939)Doi:10.1021/jo0265737
(2003)Doi:10.1039/a706746a
(1998)Doi:10.1016/S0960-894X(98)00003-1
(1998)Doi:10.1002/jhet.5570350128
(1998)
