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[Studies on chemical constituents from leaves of Cassia alata]. 2009

An Liu, and Lizhen Xu, and Zhongmei Zou, and Shilin Yang
Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China. LA62@163

OBJECTIVE To isolate and identify chemical constituents of Cassia alata. METHODS Compounds were separated and purified by column chromatography with silica gel and Sephadex LH-20, elucidated by spectroscopic methods including 1D and 2D NMR, IR and MS techniques. RESULTS Twelve compounds were isolated from C. alata, which were identified as chrysoeriol (1), kaempferol (2), quercetin (3), 5,7,4'-trihydroflavanone (4), kaempferol-3-O-beta-D-glucopyranoside (5), kaempferol-3-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (6), 17-hydrotetratriacontane (7), n-dotriacontanol (8), n-triacontanol (9), palmitic acid ceryl ester (10), stearic acid (11), palmitic acid (12). CONCLUSIONS Compounds 3-12 were isolated from C. alata for the first time.

UI MeSH Term Description Entries
D009930 Organic Chemicals A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form. Organic Chemical,Chemical, Organic,Chemicals, Organic
D002366 Cassia A plant genus of the family FABACEAE. Many species of this genus, including the medicinal C. senna and C. angustifolia, have been reclassified into the Senna genus (SENNA PLANT) and some to CHAMAECRISTA. Indian Laburnum,Cassia fistula,Cassia fistulas,Cassias,Indian Laburnums,Laburnum, Indian,Laburnums, Indian,fistulas, Cassia
D018515 Plant Leaves Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed) Plant Leaf,Leaf, Plant,Leave, Plant,Leaves, Plant,Plant Leave

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