Dimeric Anthranoids from the Leaves of Senna Multiglandlosa and Senna Septemtrionalis
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Date
1990-06
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Addis Ababa Universty
Abstract
Senna muitiglandulosa and Senna septemtrionalis are two of
the eighteen Sernna species found in Ethiopia.
The chloroform extract of 5. muliglanduosa leaves, after
repeated chromatography, have yielded four dimeric
anthranoids. Three of these were identified to be
anhydrophlegmacin-9,10-quinone (61), floribundone-l (64), and
torosanin-9, 10-quinone (93). The struc ture' of T-55-2, a
fourth compound was partially established.
From the leaves of S. septemtrionalis, the two dimeric
compounds, anhydrophlegmacin-9,10-guinone (61) and
torosanin-9,10-quinone (931 were isolated.
To our knowledge Torosanin-g,10-quinone is reported here as a
natural product for the first time, and there is only one
report on the isolation of anhydrophlegmacin-9,10- quinone
from higher plants. Floribundone-l was isolated earlier from
both plants.
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Muitiglandulosa and Senna septemtrionalis