chrysoeriol and protocatechuic-acid

To study the chemical constituents of Blumea laciniata.. The chemical constituents of the ethyl acetate fraction of ethanol extract from Blumea laciniata were isolated with column chromatographic techniques. The structures of the isolated compounds were elucidated by spectroscopic analysis and comparison with their published datas.. Five compounds were isolated and identified as: protocatechuic acid (1), chrysoeriol (2), apigenin (3), 4-hydroxy-3,5-dimethoxbenzoic acid (4), scopolet (5).. Compounds 1 - 5 are isolated from this plant for the first time, and also obtained from this genus for the first time.

Topics: Apigenin; Asteraceae; Flavones; Flavonoids; Hydroxybenzoates; Magnetic Resonance Spectroscopy; Molecular Structure; Plants, Medicinal; Scopoletin; Spectrophotometry, Ultraviolet

To study the chemical constituents of Mentha spicata.. The chemical constituents were isolated by silica gel column chromatography, and identified by physical and chemical characters and spectroscopic analysis.. Compounds I - V were obtained and their structures were elucidated as protocatechuic aldehyde (I), protocatechuic acid (II), chrysoeriol (III), 5, 6-dihydroxy-7, 8, 3', 4'-tetramethoxyflavone (IV), nodifloretin (V).. Compound I and II were first isolated from the genus Mentha. Compound Ill, IV and V were isolated from M. spicata for the first time.

Topics: Benzaldehydes; Catechols; Drugs, Chinese Herbal; Flavones; Flavonoids; Hydroxybenzoates; Mentha spicata; Plants, Medicinal