Chemical Constituents from the Leaves of Ligustrum robustum and Their Bioactivities.
Molecules
; 28(1)2023 Jan 02.
Article
in En
| MEDLINE
| ID: mdl-36615556
ABSTRACT
The leaves of Ligustrum robustum have been consumed as Ku-Ding-Cha for clearing heat and removing toxins, and they have been used as a folk medicine for curing hypertension, diabetes, and obesity in China. The phytochemical research on the leaves of L. robustum led to the isolation and identification of two new hexenol glycosides, two new butenol glycosides, and five new sugar esters, named ligurobustosides X (1a), X1 (1b), Y (2a), and Y1 (2b) and ligurobustates A (3a), B (3b), C (4b), D (5a), and E (5b), along with seven known compounds (4a and 6-10). Compounds 1-10 were tested for their inhibitory effects on fatty acid synthase (FAS), α-glucosidase, and α-amylase, as well as their antioxidant activities. Compound 2 showed strong FAS inhibitory activity (IC50 4.10 ± 0.12 µM) close to that of the positive control orlistat (IC50 4.46 ± 0.13 µM); compounds 7 and 9 revealed moderate α-glucosidase inhibitory activities; compounds 1-10 showed moderate α-amylase inhibitory activities; and compounds 1 and 10 displayed stronger 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) ammonium salt (ABTS) radical scavenging effects (IC50 3.41 ± 0.08~5.65 ± 0.19 µM) than the positive control l-(+)-ascorbic acid (IC50 10.06 ± 0.19 µM). This study provides a theoretical foundation for the leaves of L. robustum as a functional tea to prevent diabetes and its complications.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ligustrum
Language:
En
Journal:
Molecules
Journal subject:
BIOLOGIA
Year:
2023
Document type:
Article
Affiliation country: