Highly Stereoselective α-Alkylations, 1,4-Additions, and One-pot 1,4-Addition/α-Methylations Achieved on 4-O-Acyl and 4-O-Crotonyl Derivatives of Methyl 6-Deoxy-2,3-di-O-(t-butyldimethylsilyl)-α-D-glucopyranoside - Totani, Kiichiro; Asano, Shingo; Takao, Ken-ichi; Tadano, Kin-ichi (Synlett, 2001)