2009•Linchan huaxue yu gongyeRequires access

Study on anthraquinone constituents in the seed of Cassia tora L.

Jia Zhenbao, Wenwei Chen, Jiaxin Jiang, Xiaolin Ding

Abstract

Anthraquinone constituents in the seed of Cassia tora L. were investigated. Seven anthraquinone compounds were isolated from chloroform extract of the seed of C. tora with silica gel column chromatography. Their structures were elucidated through physiochemical and spectral analyses. They were identified to be chrysophanol ( Ⅰ ),physcion ( Ⅱ ),emodin ( Ⅲ ),chryso-obtusin ( Ⅳ ),8-O-methylchrysophanol ( Ⅴ ),1-O-methylemodin ( Ⅵ ) and 1,2-dimethoxy-8-hydroxy-3-methyl-9,10-anthraquinone ( Ⅶ ). Compounds Ⅴ -Ⅶ were obtained from this genus of plant for the first time.

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Key concepts: Cassia tora, Anthraquinone, Chemistry, Emodin, Chloroform, Anthraquinones, Silica gel, Column chromatography