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Chemical constituents of Launaea sarmentosa roots
Author(s) -
Hanh Le Hong,
Dung Phung Duc,
Huy Lieu Dieu,
Duong Ngo Thi Thuy,
Wacharasindhu Sumrit,
Phung Nguyen Kim Phi,
Chi Huynh Bui Linh
Publication year - 2020
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.202000057
Subject(s) - chemical constituents , traditional medicine , chemistry , chromatography , medicine
By investigating the chemical constituents of the roots of Launaea sarmentosa , collected at Can Gio beach, Can Gio district, Ho Chi Minh city, nine compounds were isolated including α‐amyrin acetate ( 1 ), β‐amyrin acetate ( 2 ), lupeol acetate ( 3 ), ψ‐taraksasterol acetate ( 4 ), luteolin ( 5 ), 4‐allyl‐2,6‐dimethoxyphenol glucopyranoside ( 6 ), scorzoside ( 7 ), ixerisoside D ( 8 ) and 9α‐hydroxypinoresinol ( 9 ). To the best of our knowledge, all compounds were reported in other species, but this is the first time they were known in L. sarmentosa . Four compounds ( 1 ‐ 4 ) from the n ‐hexane extract were identified by 4‐dimethylaminopyridine‐catalyzed benzoylation. Their chemical structures were elucidated by means of 1D and 2D NMR, HR‐ESI‐MS data analysis and compared with those reported in the literature.