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Chemical constituents from the leaves of Styrax annamensis Guill
Author(s) -
Tra Nguyen Thanh,
Anh Tran Dang,
Van Cuong Pham,
Ha Nguyen Thi Thu,
Anh Le Thi Tu,
Cham Ba Thi,
Son Ninh The
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.202000052
Subject(s) - chemical constituents , traditional medicine , botany , chemistry , biology , chromatography , medicine
A phytochemical study of the ethyl acetate extract (EtOAc) of Styrax annamensis leaves resulted in the isolation and determination of six known compounds, including three nor‐neolignans type 2‐phenylbenzofurans egonol ( 1 ), egonoic acid ( 2 ) and (–)‐machicendiol ( 3 ), two lignans styraxin ( 4 ) and vladinol D ( 5 ), and a triterpenoid pomolic acid ( 6 ). The chemical structures of these compounds were determined by NMR spectroscopies, and MS data. This is the first time to isolate these compounds from S. annamensis species. Compounds 3 and 5 have also been observed from genus Styrax for the first time.