Chemical constituents from the fruits of Madhuca latifolia

From the fruit coats of the medicinal plant Madhuca latifolia were isolated three new compounds, the triterpenoid madhucic acid (= 3beta-(octanoyloxy)-11-oxoolean-12-en-28-oic acid; 1). the untypical isoflavone madhushazone (=9-methoxy-7-(2,3,6-trimethoxyphenyl)-[1,3]dioxolo[4,5-g][1]benzopyran-8(8H)-one; 2), and a bis(isoflavone) named madhusalmone (=5,14-dimethoxy-3,12-bis(3,4,5-trimethoxyphenyl)-1,6,8,10,15 17-hexaoxa naphtho [2',3': 6,7]cyclodeca [1,2-b] naphthalene-4,13(4H,3H)-dione; 3), as well as eight known constituents, and their structures were elucidated by spectral analysis, including 2D-NMR techniques.