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[摘要]：Two new cucurbitane triterpenes, (23E)-7 beta-methoxycucurbita-5.23,25-trien-3 beta-ol (1) and 23,25-dihydroxy-5 beta,19-epoxycucurbit-6-ene-3,24-dione (2). and a new D :C-friedoolcanane triterpene. 3 alpha-[(E)-feruloyloxy]-D :C-friedooleana-7,9(11)-dien-29-oic acid (3), together with two known D:C-friedooleanane triterpenes, 3 beta-[(E)-feruloyloxy]-D :C-friedooleana-7.9(11)-dien-29-oic acid (4) and 3-oxo-D: C-friedooleana-7,9(11)-dien-29-oic acid (5). were isolated from the stems of Momordica charantia. The structures of the new compounds 1-3 were determined by spectroscopic methods. |
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