The aerial parts of both Astragalus trigonus DC. and Rhynchosia minima L. [Fam. Leguminosae] were exhaustively extracted with ethanol [90%] and fractionated into coumarin and unsaponifiable fractions.
The coumarin fraction of A. trigonus was found to contain bergapten [I] and xanthotoxin [II] , whereas waxy hydrocarbons, beta-amyrin [III] and beta-sitosterol [IV] were isolated from the unsaponifiable fraction. The coumarin fraction of R. minima was found to contain bergapten [I] , isopimpinellin [V] and umbelliferone [VI] , whereas waxy hydrocarbons and beta-sitosterol [IV] were isolated from the unsaponifiable fraction. Also, the fatty acids of both plants were studied by GLC of their methyl esters
M. E. Nassar ,
Lipids and coumarins of astragalus trigones and rhynchosia minima,
Bull. Fac. Pharm.-Cairo Univ. 1993;
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