CHEMICAL CONSTITUENTS FROM THE CHLOROFORM EXTRACT OF THE ROOT OF CALOTROPIS GIGANTEA (LINN.), ASCLEPIDACEAE
Nguyen Huu Duy Khang
Đang Hoang Phu
Nguyen Trung Nhan
Abstract
From the root of Calotropis gigantea, six compounds were isolated: 12-O-benzoyllineolon(1), 12-O-benzoyldeacetylmetaplexigenin (2), calotropone (3), 2,3-dimethoxyphenol (4), 2,5-dimethoxyphenol (5), 2-formyl-5-hydroxymethylfuran (6). The chemical structure of thesecompounds were elucidated by their NMR spectra and comparison with references.