Stereoselective glycosidation reactions of activated glycals with a c1-oxygenated allylsilane: Synthesis of a cis-pyrano[2,3-b]pyran
作者:James S. Panek、Michelle A. Sparks
DOI:10.1016/s0040-4039(00)80535-3
日期:1988.1
A highly stereoselective synthesis of a cis-pyrano[2, 3-b]pyran has been developed utilizing a BF3·OEt2 catalyzed glycosidation reaction of activated glycals with 1-hydroxy-2-propenyltrimethylsilane (1). The reaction resulted in incorporation of a 1-trimethylsilyl-2-propenyloxy-1-yl function. A subsequent fluoride ion promoted internal conjugate addition reaction was used for the construction of the