STUDIES ON CHEMICAL CONSTITUENTS OF POLYGALA ARILLATA BUCH-HAM

Seven compounds were isolated from the roots of Polyyala arillata Buch-Ham. Onbasis of chemical reactions and spectral (UV) IR ,MS,¹HNMR,DIFNoE,¹³CNMR)analysis, theywere identified as 1-methoxy-2,3-methylenedioxyxanthone(I),1,7-dihydroxy-2,3-methylene-dioxyxanthone(II),1,6,7-trihydroxy-2,3-dimethoxyxanthone(III),p-hydroxy-benzoic acid(IV),polygalitol(V),stigmasterol(VI)and stigmasterol-3-O-β-D-glucopyranoside(VII).II and IIIare new compounds.Pharmacological study indicated that I,Il and III inhibit aldose reductase.