| abstract |
The present invention relates to a novel betulinic acid derivative useful as an inhibitor of tumor / cancer cells having the formula wherein C 2 , C 3 , C 17 , C 20 and / or C 29 are changed; A method for producing the above derivative; Methods for the treatment of ovarian, colon, lung, laryngeal and prostate cancer of mammals using such derivatives or compositions, and pharmaceutical compositions comprising said derivatives useful for the treatment of ovarian, colon, lung, laryngeal, prostate, leukemia, . |