Patent ID: 7220871

Claim:
A baccatin III compound of formula V wherein Ac is an acetyl radical, Bz is an benzyl radical, Me is a methyl radical, R 4 is an acetyl radical or a protective group for the hydroxyl functional group represented by GP 1, R 5 is a protective group for the hydroxyl functional group represented by GP2, GP1 and GP2 are selected independently of one another from bulky haloalkoxycarbonyl radicals with the exception of TROC, acyl radicals in which a carbon α to the carbonyl functional group carries at least one oxygen atom, and trialkylgermanyl radicals, or GP1 and GP2 together form a divalent radical of formula —SiR 7 —O—SiR 8 —, and R 7 and R 8 are, each independently of one another, a sterically hindered alkyl radical.