Unusual glycosides of pyrrole alkaloid and 4'-hydroxyphenylethanamide from leaves of Moringa oleifera.

摘要

Glycosides of pyrrole alkaloid (pyrrolemarumine 4''-O- alpha-L-rhamnopyranoside) and 4'-hydroxyphenylethanamide (marumosides A and B) were isolated from leaves of Moringa oleifera along with eight known compounds; niazirin, methyl 4-( alpha-L-rhamnopyranosyloxy)benzylcarbamate, benzyl beta-D-glucopyranoside, benzyl beta-D-xylopyranosyl-(1 rightwards-arrow 6)- beta-D-glucopyranoside, kaempferol 3-O- beta-D-glucopyranoside, quercetin 3-O- beta-D-glucopyranoside, adenosine and L-tryptophan. Structure elucidations were based on analyses of chemical and spectroscopic data including 1D- and 2D-NMR.