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Paper | Regular issue | Vol 31, No. 10, 1990, pp.1847-1853
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5519
New Naphthopyrone Derivatives from Cassia pudibunda

Irene Messana,* Franco Ferrari, Maria Salete B. Cavalcanti, and Eszter Gàcs-Baitz

*Istituto di Chimica, Università Cattolica del Sacro Cuore, L. F. Vito 1, 00168 Roma, Italy


Further examination of the methanolic extract of the roots of Cassia pudibunda led to isolation of four new angular γ-naphthopyrones identified as 10-demethylflavasperone (1), 10-demethylflavasperone-10-sulphate (2), 10-demethylflavasperone-10-O-β-D-apiofuranosyl-(1->6)-O-β-D-glucopyranoside (3), and cassiapyrone-10-sulphate (7-methyl-10-demethylflavasperone-10-suophate) (4). The antimicrobial activity of the compounds is also reported.