共 50 条
α-glucosidase inhibitory pentacyclic triterpenoids from the leaves of Cleistocalyx conspersipunctatus
被引:4
|作者:
Du, Haifang
[1
,3
]
Li, Hanxiang
[1
,2
]
Wu, Ping
[1
,2
,3
]
Wang, Chen
[1
,3
]
Xue, Jinghua
[1
,2
]
Wei, Xiaoyi
[1
,2
,3
]
机构:
[1] Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable U, South China Bot Garden, Xingke Rd 723, Guangzhou 510650, Guangdong, Peoples R China
[2] Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Xingke Rd 723, Guangzhou 510650, Guangdong, Peoples R China
[3] Univ Chinese Acad Sci, Yuquanlu19A, Beijing 100049, Peoples R China
关键词:
Cleistocalyx conspersipunctatus;
Pentacyclic triterpenoid;
alpha-Glucosidase inhibition;
CONSTITUENTS;
D O I:
10.1016/j.phytol.2020.11.005
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Five new pentacyclic triterpenoids, 6a-hydroxyursolic acid (1), 6 alpha-hydroxycorosolic acid (2), 6-oxo-maslinic acid (3), 6-oxo-delta-maslinic acid (4), and 6-oxo-alphitolic acid (5), along with 15 known analogues were isolated from the leaves of Cleistocalyx conspersipunctatus. Their structures were elucidated by spectroscopic analysis. Compound 1 displayed better alpha-glucosidase inhibitory activity (IC50: 2.6 mu M) than the known inhibitor corosolic acid (IC50: 15.5 mu M). Structure-activity relationships in the activity were discussed for this group of isolates.
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页码:109 / 113
页数:5
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