From the leaves of Corchorus capsularis a new dammarane triterpene glycoside, capsim, has been isolated Capsim was identified as the 3-glucoside of 20,24-epoxy-3β,12β,25,30_tetrahydroxydammarane from spectral data Capsim was tentatively assigned the (20S, 24S)configuratlon by comparison with data available for similar compounds One of the oxidation products of the aglycone appears to be a friedo-type derivative, formed by concerted methyl migration on decarboxylation of a C-30 carboxyhc acid intermediate