Chemical constituents from aerial parts of Argyreia seguinii

Objective To study the chemical constituents of the aerial parts of Argyreia seguinii.Methods Compounds were isolated by Sephadex LH-20 and silica gel column chromatographies,and their structures were identified by spectral methods together with physiochemical analysis.Results Eleven known compounds were isolated from the aerial parts of A.seguinii.They were identified as β-sitosterol(Ⅰ),stigmasterol(Ⅱ),daucosterin(Ⅲ),scopoletin(Ⅳ),salicylic acid(Ⅴ),3,4-dihydroxy benzaldehyde(Ⅵ),Ntrans-p-hydroxyphenethyl coumaramine(Ⅶ),Ntrans-p-hydroxyphenethyl ferolamine(Ⅷ),3,5-di-O-caffeoylquinic acid methyl ester(Ⅸ),3,4-di-O-caffeoylquinic acid methyl ester(Ⅹ),and 4,5-di-O-caffeoylquinic acid methyl ester(Ⅺ).Conclusion Compounds Ⅰ-Ⅺ are isolated from this plant for the first time.