Abstract:
The ethyl acetate part of the alcoholic extract of
Cordia dichotoma fruits was purified by a combination of normal-phase silica gel column chromatography, Sephadex LH-20 gel column chromatography and semi-preparative HPLC, and the structure was identified by modern spectroscopic techniques (UV, IR, MS, NMR). A total of 10 compounds were isolated and identified as cordilide (
1), (
S)-2-hydroxy-3-(4'-hydroxyphenyl) propanoic acid (
2), vanillic acid (
3),
p-coumaric acid (
4), 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)propan-1-one (
5), benzoic acid (
6),
p-hydroxypropiophenone (
7),
p-hydroxyacetophenone (
8), 5'-methoxyevofolin B (
9) and vanillin (
10). Among them, compound
1 is a pair of new phenylpropanoid enantiomers, and compounds
3,
6,
8 and
9 were isolated for the first time from the genus.