Affiliation:
1. Institute of Marine Biochemistry, VAST 18 Hoang Quoc Viet, Cau Giay Hanoi 10072 Vietnam
2. Graduate University of Science and Technology, VAST 18 Hoang Quoc Viet, Cau Giay Hanoi 10072 Vietnam
Abstract
AbstractTwo undescribed triterpenes, syzyfolium A (1) and syzyfolium B (2), together with twelve known compounds, terminolic acid (3), actinidic acid (4), piscidinol A (5), threo‐dihydroxydehydrodiconiferyl alcohol (6), lariciresinol‐4‐O‐β‐D‐glucoside (7), icariol A2 (8), 14β,15β‐dihydroxyklaineanone (9), garcimangosone D (10), (+)‐catechin (11), myricetin‐3‐O‐α‐L‐rhamnopyranoside (12), quercitrin (13), and 3, 4, 5‐trimethoxyphenyl‐(6′‐O‐galloyl)‐O‐β‐D‐glucopyranoside (14) were isolated from the leaves of Syzygium myrsinifolium. Their chemical structures were determined by IR, HR‐ESI‐MS, 1D and 2D NMR spectra. Compounds 3 and 4 inhibited significantly α‐glucosidase with IC50 values of 23.99 and 36.84, respectively, and compounds 1 and 2 inhibited significantly α‐amylase with IC50 values of 35.48 and 43.65 μM, respectively.
Funder
Vietnam Academy of Science and Technology