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Complete LC/MS analysis of a Tinnevelli senna pod extract and subsequent isolation and identification of two new benzophenone glucosides

Terreaux, C.
Wang, Qi
Ioset, Jean-Robert
Grimminger, W.
Published in Planta Medica. 2002, vol. 68, p. 349-354
Abstract The hydroalcoholic extract of Tinnevelli senna is widely used as a laxative phytomedicine. In order to improve the knowledge of the chemical composition of this extract, LC/MS and LC/MSn studies were performed, allowing the on-line identification of most of the known constituents, i.e., flavonoids, anthraquinones and the typical dianthronic sennosides. However, the identity of four compounds could not be ascertained on-line under the given LC/MS conditions. These substances were isolated and their structures elucidated as kaempferol, the naphthalene derivative tinnevellin 8-glucoside and two new carboxylated benzophenone glucosides.
Keywords cassia angustifolialeguminosaelc/mstinnevellin 8-glucosidebenzophenone glucosidescassiaphenone a-2-glucosidecassiaphenone b-2-glucoside
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