作者:Guo-Ping Zhou、Yan Yu、Ming-Ming Yuan、Tengfei Ji、Hui-Zheng Fu、Rui-Jian Zhong
DOI:10.3390/molecules20059071
日期:——
Four new triterpenoids which were identifed as 2α,3β,6β,19α-tetrahydroxy- oleanolic acid 28-O-β-D-glucopyranoside (1), 2-O-β-D-glucopyranosyloxy-3α,19α-di-hydroxyoleanolic acid (2), 2-O-β-D-glucopyranosyloxy-3α,19α-dihydroxyursolic acid (3), 2α,3α,6β,19α-tetrahydroxyursolic acid 28-O-β-D-glucopyranoside (4), were isolated from the aerial parts of Callicarpa kwangtungensis together with three known triterpenoids identified as 2α,3β,21β-trihydroxyursolic acid 28-O-β-D-glucopyranoside (5), 2α,3α,19α,23-tetrahydroxyoleanolic acid 28-O-β-D-glucopyranoside (6), 2α,3α,19α,23-tetrahydroxyursolic acid 28-O-β-D-glucopyranoside (7). Their structures were elucidated by the combination of mass spectrometry (MS), one and two-dimensional NMR experiments.
四种新的三萜类化合物被鉴定为 2α,3β,6β,19α-四羟基齐墩果酸 28-O-β-D-吡喃葡萄糖苷(1)、2-O-β-D-吡喃葡萄糖苷氧基-3α、19α-二羟基齐墩果酸(2)、2-O-β-D-吡喃葡萄糖氧基-3α,19α-二羟基熊果酸(3)、2α,3α,6β,19α-四羟基熊果酸 28-O-β-D-吡喃葡萄糖苷(4)、2α,3α,6β,19α-trihydroxyursolic acid 28-O-β-D-glucopyranoside (5)、2α,3α,19α,23-四羟基齐墩果酸 28-O-β-D-吡喃葡萄糖苷(6)、2α,3α,19α,23-四羟基熊果酸 28-O-β-D-吡喃葡萄糖苷(7)。结合质谱、一维和二维核磁共振实验阐明了它们的结构。