Gp. Roth et al., REACTION OF PACLITAXEL AND 10-DESACETYL BACCATIN-III WITH DIETHYLAMINO SULFURTRIFLUORIDE, Tetrahedron letters, 36(10), 1995, pp. 1609-1612
Reaction of protected paclitaxel with diethylamino sulfurtrifluoride (
DAST), to furnish the 7-fluoro paclitaxel, gives a mixture of four pro
ducts, two of which have not been previously reported. The product dis
tribution is shown to be solvent dependent. An efficient process for t
he preparation of the parent 7-alpha-fluoro baccatin III from 10-desac
etyl baccatin III is also described.