Dimeric Anthranoids From The Leaves Of Senna Multiglandlosa And Senna Septemtrionalis

Senna muitiglandulosa and Senna septemtrionalis are two ofrnthe eighteen Sernna species found in Ethiopia.rnThe chloroform extract of 5. muliglanduosa leaves, afterrnrepeated chromatography, have yielded four dimericrnanthranoids. Three of these were identified to bernanhydrophlegmacin-9,10-quinone (61), floribundone-l (64), andrntorosanin-9, 10-quinone (93). The struc ture' of T-55-2, arnfourth compound was partially established.rnFrom the leaves of S. septemtrionalis, the two dimericrncompounds, anhydrophlegmacin-9,10-guinone (61) andrntorosanin-9,10-quinone (931 were isolated.rnTo our knowledge Torosanin-g,10-quinone is reported here as arnnatural product for the first time, and there is only onernreport on the isolation of anhydrophlegmacin-9,10- quinonernfrom higher plants. Floribundone-l was isolated earlier fromrnboth plants.

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