Secondary metabolites from Guill. and Perr. (Fabaceae).

The chemical investigation of the ethanol/water (7:3) extract of the roots of (Fabaceae) led to the isolation of one new labdane diterpenoid, microcarpin () and one new ceramide derivative, microcarpamide (), along with eight known secondary metabolites () including, 5-(carboxymethyl)-5,6,8a-trimethyl-3,4,4a,5,6,7,8,8a-octahydronaphthalene-1-carboxylic acid (), microcarposide (), rhinocerotinoic acid (), 1,7-dihydroxy-6-methylxanthone (), ursolic acid (), 3,23-dihydroxylup-20(29)-en-28-oic acid (), alphitolic acid (), and stigmasterol glucoside (). The structures of these compounds were elucidated based on their spectroscopic data. Although compounds and are known, their crystalline structures are reported here for the first time.