citrusinine-i and 1-2-3-4-tetrahydro-beta-carboline-3-carboxylic-acid

To investigate the chemical constituents of Ipomoea batatas.. Silica gel column chromatography and Sephadex LH-20 were used to separate and purify the compounds from the EtOAc and n-BuOH soluble fraction of ethanol extracts. The chemical structures were elucidated on the basis of physic-chemical properties and spectral data.. Four compounds were isolated and identify as citrusin C (1), caffeicacid (2), 3,4-di-O-caffeoylquinic acid (3), 1,2,3,4-tetrahydro-beta-carboline-3-carboylic acid (4).. Compounds 1-4 are isolated for the first time from I. batatas.

Topics: Alkaloids; Caffeic Acids; Carbolines; Chlorogenic Acid; Ipomoea batatas; Plant Leaves; Plants, Medicinal; Spectrophotometry, Ultraviolet