Three new triterpene glycosides, named momordicosides C, D and E, were isolated from the seeds of Momordica charantia L. (Cucurbitaceae). Their structures were determined on the basis of spectral and chemical evidence as 3-O-β-gentiobiosides of cucurbit-5-ene-3β, 23, 24, 25-tetraol, cucurbita-5, 24-diene-3β, 22, 23-triol and 3β-hydroxy-23, 24, 25, 26, 27-pentanor-20 (ε)-cucurbit-5-en-22-al, respectively.
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Miyahara et al. (1981) studied this question.