Hepatoprotective Triterpenoid Saponins from <i>Callicarpa nudiflora</i>
作者:Bo Huang、Hui-Zheng Fu、Wei-Kang Chen、Yue-Hua Luo、Shuang-Cheng Ma
DOI:10.1248/cpb.c14-00159
日期:——
Four new triterpenoid saponins, 2α,3α,19α,24-tetrahydroxyolean-12-en-28-oic-acid 28-O-β-D-glucopyranosyl ester (1), 2α,3α,19α,23-tetrahydroxyolean-12-en-28-oic-acid 28-O-β-D-xylopyranosyl-(1→2)-β-D-glu-copyranosyl ester (2), 2α,3α,19α-trihydroxyolean-12-en-28-oic-acid 28-O-β-D-xylopyranosyl-(1→2)-β-D-glucopyranosyl ester (3), 2α,3α,23,29-tetrahydroxyurs-12,19-dien-28-oic-acid 28-O-β-D-glucopyranosyl ester (4), together with three known compounds (5–7), were isolated from the leaves of Callicarpa nudiflora HOOK. Their structures were established by means of spectroscopic methods and chemical evidence. Hepatoprotective activities of the isolated compounds against D-galactosamine-induced toxicity have been tested. Among them, compounds 1–3 showed pronounced hepatoprotective activities against D-galactosamine-induced toxicity in WB-F344 rat hepatic epithelial stem-like cells.
四种新的三萜类皂甙:2α,3α,19α,24-四羟基油菜素-12-烯-28-酸 28-O-β-D-吡喃葡萄糖酯 (1)、2α,3α,19α,23-四羟基油菜素-12-烯-28-酸 28-O-β-D-吡喃木糖基-(1→2)-β-D-吡喃葡萄糖酯 (2)、2α,3α、19α-trihydroxyolean-12-en-28-oic-acid 28-O-β-D-xylopyranosyl-(1→2)-β-D-glu-copyranosyl ester (3)、2α,3α,23,29-tetrahydroxyurs-12,19-dien-28-oic-acid 28-O-β-D-glucopyranosyl ester (4),以及三种已知化合物 (5-7)。通过光谱方法和化学证据确定了它们的结构。测试了分离出的化合物对 D-半乳糖胺诱导的毒性的保护肝脏活性。其中,化合物 1-3 在 WB-F344 大鼠肝上皮干样细胞中对 D-半乳糖胺诱导的毒性具有明显的保肝活性。