Isolation and identification of chemical constituents of whole plant of Hibiscus trionum Linn.(II)

Objective To study the chemical constituents of Hibiscus trionum Linn..Methods The compounds were isolated by chromatography on silica gel,Sephadex LH-20 columns and the recrystallization methods.Chemical properties and NMR data were employed for the structural identification.Results Seven compounds were isolated,their structures were identified as caffeic acid(1),3,4-dihydroxybenzoic acid(2),3-methoxyl-4-hydroxybenzoic acid(3),ethyl gallate(4),benzoic acid(5),succinic acid(6),adenosine(7),respectively.Conclusions Compounds 1,3,4,5,7 are obtained from the Hibiscus genus for the first time and 17 are isolated from Hibiscus trionum Linn.for the first time.