Patent ID: 8722900

Claim:
A process for preparing a compound of formula (I) said process comprising: a) contacting 10-deacetylbaccatin III of formula (II) with a 1,3-dithiolane derivative or a 1,3-dithiane derivative, to obtain a compound of formula (V) and b) converting said compound of formula (V) to a compound of formula (I); wherein each of R 1 and R 2 is independently branched or unbranched C 1 -C 6 alkyl; each of R 4 and R 5 , which may be identical or different, is 1 ,3-dithian -2-yl, 1,3-dithiolan-2-yl, 1,3-dithiolan-4-en-2-yl, or 1,3-benzodithiolan-2-yl; and G is H.