| abstract |
The disclosure describes compounds of formula I, n wherein the wedged bonds, R 1 , R 2 , R 3 , R 4 , R 5 , R 5a , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , X and Y have meanings given in the description, and pharmaceutically-acceptable salts thereof; and methods of using such compounds useful in the treatment of cancer and conditions affected by inhibition of angiogenesis. Also provided, are processes for the preparation of formula I, by reacting formula I with other compounds; and processes for the preparation of a pharmaceutical formulation by bringing into association, a compound of formula I, with therapeutic agents and/or a pharmaceutically-acceptable adjuvant, diluent, or carrier. |