Flavonol diglycosides from Blackstonia perfoliata. |
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| Authors: | M Kaouadji |
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| Institution: | Laboratoire de Pharmacognosie, UFR de Pharmacie, Université Joseph Fourier-Grenoble I, La Tronche, France. |
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| Abstract: | Two unusual diglycosides, quercetin and kaempferol 3-rhamnosyl(1----2)galactosides and the new isorhamnetin 3-rhamnosyl(1----2)galactoside have been isolated from the aerial parts of Blackstonia perfoliata. Instead of C-glycosylflavones, the occurrence of flavonol glycosides in this species as well as in three other genera of the Gentianaceae: Centaurium, Coutoubea and Eustoma, is in agreement with the grouping of these four genera in the subtribe Chlorae of the Gentianeae. |
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