摘要:
A new dihydroisofuranoxanthone, methyl 3,10-dihydro-11-hydroxy-1-methoxy-4,6-dimethyl-10-oxo-1H-furo[3,4-b]xanthene-3-carboxylate, designated as borhavine, has been isolated and characterized from the benzene extract of the roots of Boerhaavia diffusa.