DIMERIC HYDROANTHRACENES FROM THE UNRIPE SEEDS OF CASSIA TOROSA

Article abstract of DOI:10.1016/0031-9422(82)83053-7

From the unripe seeds of Cassia torosa three new dimeric hydroanthracene derivatives were isolated along with stigmasterol, sitosterol, campesterol, physcion-9-anthrone, torosachyrsone and the phlegmacins A₂ and B₂.The structures of the new derivatives were established as physcion-10,10'-bianthrone, anhydrophlegmacin B₂ <2-(6'-methoxy-3'-methyl-3',8'9'-trihydroxy-1'-oxo-1',2',3',4'-tetrahydroanthracene-10'-yl)-1,8-dihydroxy-3-methoxy-6-methyl-9-oxo-9,10-dihydroanthracene> and torosanin <2-(6'-methoxy-3'-methyl-3',8',9'-trihydroxy-1'-oxo-1',2',3',4'-tetrahydroanthracene-5'-yl)-1,8-dihydroxy-3-methoxy-6-methyl-9-oxo-9,10-dihydroanthracene>, respectively.Key Word Index - Cassia torosa; Leguminosae; physcion-9-anthrone; physcion-10,10'-bianthrone; phlegmacin; anhydrophlegmacin B₂; torosanin; hydroanthracene; phytosterols.