Stigmastane derivatives and isovaleryl sucrose esters from Vernonia guineensis (Asteraceae)
Stigmastane derivatives and isovaleryl sucrose esters from Vernonia guineensis (Asteraceae)
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DOI：
10.1016/s0031-9422(03)00326-1
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发表时间：
2003-08-01
期刊：
影响因子：
3.8
通讯作者：
Connolly, JD
中科院分区：
文献类型：
--
作者：
Tchinda, AT;Tane, P;Connolly, JD
Vernoguinoside, 16beta,22R;21,23S-diepoxy-3beta-O-beta-D-glucopyranosyloxy-21S,24-dihydroxy-5alpha-stigmasta-8,14-dien-28-one (1), a new stigmastane derivative, 16beta,22R;21,23S-diepoxy-21S,24-dihydroxy-5alpha-stigmasta-8,14-diene-3,28-dione (2) and two new sucrose esters, 1',3,3',4',6'-pentakis-O-(3-methylbutanoyl)-beta-D-fructofuranosyl alpha-D-glucopyranoside (3) and 1,2,3',6,6'-pentakis-O-(3-methylbutanoyl)-beta-D-fructofuranosyl alpha-D-glucopyranoside (4), have been isolated from the stem bark of Vernonia guineensis. The structures of the new compounds were determined on the basis of spectroscopic evidence. (C) 2003 Elsevier Ltd. All rights reserved.
