New polyhydroxytriterpenoid derivatives from fruits of Terminalia chebula Retz. and their α-glucosidase and α-amylase inhibitory activity
作者:Dong Young Lee、Heejung Yang、Hyun Woo Kim、Sang Hyun Sung
DOI:10.1016/j.bmcl.2016.11.039
日期:2017.1
Three new polyhydroxytriterpenoid derivatives, 23-O-neochebuloylarjungenin 28-O-β-d-glycopyranosyl ester (1), 23-O-4'-epi-neochebuloylarjungenin (2), and 23-O-galloylpinfaenoic acid 28-O-β-d-glucopyranosyl ester (17) were isolated from the fruits of Terminalia chebula Retz. along with fourteen known ones. Their structures were elucidated by 1D and 2D NMR spectroscopic data and acid hydrolysis. After
三种新的多羟基三萜衍生物,23-O-新戊二酸酯基jungenin(28)-O-β-d-glycopyranosyl酯(1),23-O-4'-表新丁二酸酯基jungenin(2)和23-O-半乳糖基戊二酸28-O-β从Terminalia chebula Retz的果实中分离出-d-吡喃葡萄糖基酯(17)。以及十四个已知的。通过1D和2D NMR光谱数据以及酸水解阐明了它们的结构。在评估了所有分离出的化合物,23-O-galloylarjunolic acid(11,IC5021.7μM)和23-O-galloylarjunolic acid 28对贝克酵母的α-葡萄糖苷酶,大鼠肠道α-葡萄糖苷酶和猪胰α-淀粉酶的抑制活性之后28 -O-β-d-吡喃葡萄糖基酯(12,IC5064.2μM)与阳性对照阿卡波糖(IC50174.0μM)相比,显示出对贝克酵母α-葡萄糖苷酶的有效抑制活性。然而,