Qb. Zeng et La. Paquette, Selective acylation reactions of an isotaxane tetraol. A direct pathway tointroduction of the oxetane ring, SYNLETT, (10), 1999, pp. 1547-1550
An isotaxane fully functionalized as taxol in rings C and D was synthesized
in six steps from tetraol 2 with complete chemical control over the four a
vailable hydroxyl substituents.