(6R,9R)-9-hydroxymegastigman-4-en-3-one-9-O-β-D-glucopyranoside;(6R,9R)-megastigma-4-en-3-one 9-O-β-glucopyranoside;blumenyl C β-D-glucopyranoside;blumenol C 9-O-β-glucoside;blumenol C O-β-D-glucoside;blumenol C glucoside;Byzantionoside B;(4R)-3,5,5-trimethyl-4-[(3R)-3-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxybutyl]cyclohex-2-en-1-one
The absolute stereochemistry of blumenolC glucoside and byzantionoside B was revised here as (6R,9S)- and (6R,9R)-9-hydroxymegastigman-4-en-3-one 9-O-beta-D-glucopyranosides, respectively, by modified Mosher's method. The empirical rules of (13)C-NMR chemical shift to determine the absolute stereochemistry of C-9 of 9-hydroxymegastigmane 9-O-beta-D-glucopyranoside were also discussed.
Ten new glycosides, icarisides A2-A4, B5-B7, E3, F1-F2 and G1, were isolated from the polar fraction of the water extract of Epimedium grandiflorum MORR. var. thunbergianum (MIQ.) NAKAI, together with three known glycosides, phenethyl glucoside, (Z)-3-hexenyl glucoside and blumenol C glucoside. Their structures were established on the basis of chemical evidence and spectral data.
从 Epimedium grandiflorum MORR. Var. thunbergianum (MIQ.) NAKAI 水提取物的极性部分分离出 10 种新苷,即冰片苷 A2-A4、B5-B7、E3、F1-F2 和 G1,以及 3 种已知苷,即苯乙基葡萄糖苷、(Z)-3-己烯基葡萄糖苷和 blumenol C 葡萄糖苷。根据化学证据和光谱数据确定了它们的结构。