cytellin and bergenin

To study the chemical constituents from Astilbe myriantha.. The constituents were isolated and purified by column chromatography methods and recrystallization. Their structures were identified on the basis of physiochemical properties and special analysis.. Ten compounds were isolated from 95% ethanol extract of Astilbe myriantha and their structures were identified as: beta-sitosterol (1), methyl p-hydroxy benzoate (2), ferulic acid (3), bergenin (4), gallic acid (5), (+)-catechin (6), 3beta-acetoxy-6beta-hydroxyolean-12-en-27-oic acid (7), 3beta-hydroxyolean-12-en-27-oic acid (8),3beta,6beta-dihydrolean-12-en-27-oic acid (9) and 3beta-hydroxyurs-12-en-27-oic acid (10).. Compounds 1-7 are isolated from this plant for the first time.

Topics: Benzopyrans; Coumaric Acids; Ethanol; Magnetic Resonance Spectroscopy; Molecular Structure; Plant Extracts; Rhizome; Saxifragaceae; Sitosterols; Triterpenes

To study the chemical constituents of Yao Medicine Cissus pteroclada.. The compounds were isolated and purified by column chromatography with silica gel, TLC and recrystallization. Their structures were elucidated on the basis of physicochemical properties and spectra analysis.. Six compounds were isolated and identified as beta-sitosterol (I), bergenin (II), 11-O-galloylbergenin (III), 11-O-(4-hydroxy benzoyl) bergenin (IV), gallic acid (V), daucosterol (VI).. Compounds III and NIV are obtained from the genus for the first time. All the compounds are isolated from this plant for the first time except the compound II.

Topics: Benzopyrans; Cissus; Gallic Acid; Molecular Structure; Plant Stems; Plants, Medicinal; Sitosterols; Spectrophotometry, Infrared; Spectrophotometry, Ultraviolet

Topics: Anti-Ulcer Agents; Benzopyrans; Benzoquinones; Drugs, Chinese Herbal; Flavonoids; Isoflavones; Quinones; Sitosterols; Triterpenes