Highly Stereoselective 1,4-Addition of the Enolate Generated from 6-Deoxy-d-Glucopyranoside-Derived Propionyl Ester to Methyl Crotonate: Application to Total Synthesis of (-)-Lasiol - Asano, Shingo; Tamai, Tetsuo; Totani, Kiichiro; Takao, Ken-ichi; Tadano, Kin-ichi (Synlett, 2003)