An Unusual Formation of Cyclic Sulfite at C-4 and C-5 Positions of Taxane

An unusual formation of cyclic sulfite at C-4 and C-5 positions of taxane was accomplished by treatment of compound 1 with excess MeSO2Cl/Et3N and a possible mechanism was proposed.

Reduction of 1-Deoxy-13-oxotaxanes

Reduction of 1-deoxy-13-oxotaxanes has been studied under different reaction conditions. Some interesting reactions were reported.