From the roots of Helicteres angustifolia, collected from Anhui province, two triterpenoids of oleanolic acid type were obtained and were identified as new compounds, methyl 3β-hydroxyolean-12-en-27-benzoyloxy-28-oate(1) and 3β-O-(p-hydroxy-(E)-cinnamoyl)-12 oleanen-28-oic acid(2). The variety of spectroscopic methods such as IR, HRMS, EIMS, H-H COSY, H-C COSY NMR have been applied in the structural elucidation of these two compounds.
目的研究筋骨草A jug a d ecum bens的化学成分。方法采用硅胶柱色谱对筋骨草的甲醇提取浸膏进行分离纯化,得到5个单体,并通过光谱分析鉴定了其结构。结果这5个单体分别被鉴定为1-辛烯-O-α-L-吡喃阿拉伯糖-(1-6)-O-[β-D-吡喃葡萄糖-(1-2)]-β-D-吡喃葡萄糖(Ⅰ)、正丁基-β-D-吡喃果糖苷(Ⅱ)、6,7-二羟基-香豆素(Ⅲ)、5,7-二羟基-4′-甲氧基黄酮(Ⅳ)和谷甾醇-3-O-β-D-吡喃葡萄糖苷(Ⅴ)。结论5个化合物均为首次从该植物中分离得到。
