作者:Raj Nath Yadava、Shirin Khan
DOI:10.14233/ajchem.2013.14046
日期:——
A new flavone glycoside (A) m.p. 265-268 ºC, m.f. C33H40O21, [M]+ 742 (FABMS), has been isolated from stem of Taraxacum oficinale (L.) Weber. It was characterized as 3,5,7,3,4-pentahydroxy 8-C methyl flavone 7-O-b-D-xylopyranosyl (1®4)O-b-D glucopyranosyl 3-O-a-L-rhamnopyranoside alongwith known compound ladanein B by various chemical degradations and spectral analysis.
一种新的黄酮苷(A)m.p. 265-268 ºC,m.f. C33H40O21,[M]+ 742 (FABMS),已从蒲公英(L.)韦伯的茎中分离出来。通过多种化学降解和光谱分析,它被鉴定为3,5,7,3,4-五羟基8-C甲基黄酮7-O-β-D-吡喃木糖基(1®4)O-β-D-吡喃葡萄糖基3-O-α-L-吡喃鼠李糖苷,以及已知的化合物ladanein B。