OBJECTIVE: To study the bioactive constituents, quinic acid esters, from Siphonostegia chinensis. METHOD: The compounds were extracted with solvents, isolated by various column chromatography and identified by spectroscopic methods. RESULT: Three quinic acid esters were isolated and identified as 3,4-di-O-caffeoylquinic acid(I), macranthoin F(II), and methyl ester of 3, 4,5-tri-O-caffeoylquinic acid (III). CONCLUSION: All compounds were isolated from Siphonostegia for the first time.
OBJECTIVE: To study the bioactive constituents, quinic acid esters, from Siphonostegia chinensis. METHOD: The compounds were extracted with solvents, isolated by various column chromatography and identified by spectroscopic methods. RESULT: Three quinic acid esters were isolated and identified as 3,4-di-O-caffeoylquinic acid(I), macranthoin F(II), and methyl ester of 3, 4,5-tri-O-caffeoylquinic acid (III). CONCLUSION: All compounds were isolated from Siphonostegia for the first time.
Authors: Ye Deng; Young-Won Chin; Hee-Byung Chai; Esperanza Carcache de Blanco; Leonardus B S Kardono; Soedarsano Riswan; Djaja D Soejarto; Norman R Farnsworth; A Douglas Kinghorn Journal: Phytochem Lett Date: 2011-09-01 Impact factor: 1.679