| abstract |
The invention relates to novel betulinic acid derivatives of structural formula having modifications at C2, C3, C17, C20 and/or C29 positions, said derivatives being useful as inhibitors of tumor/cancer cells; process for preparation of the said derivatives; pharmaceutical compositions comprising said derivatives useful in the treatment of ovarian, colon, lung, laryngeal, prostrate cancer, leukemia, lymphoma and a method of treatment of ovarian, colon, lung, laryngeal and prostrate cancer in mammals using said derivatives or compositions. |