Patent ID: 7183312

Claim:
A taxane having the formula: wherein R 2 is acyloxy; R 7 is R 7a COO— and R 7a is a heterosubstituted methyl group wherein the heteroatom may be substituted to form a heterocyclo, alkoxy, alkenoxy, alkynoxy, aryloxy, hydroxy, protected hydroxy, oxy, acyloxy, nitro, amino, amido, thiol, ketal, acetal, ester or ether; R 9 is keto, hydroxy, or acyloxy; R 10 is hydroxy; R 14 is hydrido or hydroxy; X 3 is substituted or unsubstituted alkyl, alkenyl, alkynyl or heterocyclo; X 5 is —COX 10 , —COOX 10 , or —CONHX 10 ; X 10 is hydrocarbyl, substituted hydrocarbyl, or heterocyclo; and Ac is acetyl.