作者:Poolsak Sahakitpichan、Wannaporn Disadee、Somsak Ruchirawat、Tripetch Kanchanapoom
DOI:10.1248/cpb.59.1160
日期:——
A new 3-hydroxydihydrobenzofuran glucoside, gnaphaliol 9-O-β-D-glucopyranoside (2), was isolated from the aerial parts of Gnaphalium polycaulon together with 1-(2R*,3S*)-3-(β-D-glucopyranosyloxy)-2,3-dihydro-2-[1-(hydroxyl methyl)vinyl]-1-benzofuran-5-yl}-ethanone or gnaphaliol 3-O-β-D-glucopyranoside (1), (Z)-3-hexenyl O-β-D-glucopyranoside (3) and adenosine (4). The absolute configurations at C-2 and C-3 positions of compound 1 were determined to be 2R and 3R. The structures of these compounds were elucidated on the basis of their physical and spectroscopic data.
从 Gnaphalium polycaulon 的地上部分中分离出一种新的 3-羟基二氢苯并呋喃葡萄糖苷,gnaphaliol 9-O-β-D-glucopyranoside (2),以及 1-(2R*,3S*)- 3-(β-<小>D小>-吡喃葡萄糖氧基)-2,3-二氢-2-[1-(羟甲基)乙烯基]-1-苯并呋喃-5-基}-乙酮或 gnaphaliol 3-O -β-<小>D小>-吡喃葡萄糖苷 (1)、(Z)-3-己烯基 O-β-<小>D小>-吡喃葡萄糖苷 (3) 和腺苷 (4)。确定化合物1的C-2和C-3位的绝对构型为2R和3R。这些化合物的结构是根据其物理和光谱数据阐明的。