作者:Simona Hybelbauerová、Jan Sejbal、Martin DracÌÃnský、Iva Rudovská、BohumÃr Koutek
DOI:10.1002/hlca.200900220
日期:2009.12
pentane‐2,4‐diol and p‐coumaric acid (=3‐(4‐hydroxyphenyl)prop‐2‐enoic acid) along with 13 known compounds including 6 oleanane‐ and ursane‐type triterpenoids were isolated from MeOH extracts of the stems of Vaccinium myrtillus. The structures of the new compounds were assigned as (2S,4R)‐4‐(β‐D‐glucopyranosyloxy)pentan‐2‐yl (2E)‐p‐coumarate (1) and its aglycone 2 on the basis of 1D‐ and 2D‐NMR spectroscopic
戊烷-2,4-二醇和对-香豆酸(= 3-(4-羟苯基)丙-2-烯酸)的两种先前未报告的酯1和2以及13种已知化合物,包括6种齐墩果烷和烷型从牛痘越桔茎的MeOH提取物中分离出三萜类化合物。新化合物的结构被指定为(2 S,4 R)‐4‐(β ‐ D‐吡喃葡萄糖基氧基)戊二-2-基(2E)‐对香豆酸酯(1)及其糖苷配基2基于分离和合成的化合物的1D和2D-NMR光谱分析以及分子建模实验。这是关于天然产物中苯酚衍生的酸与糖苷部分之间存在手性戊烷-2,4-二醇连接基的首次报道。