Synthetic Approach to Analogues of the Original Structure of Sclerophytin A
作者:Michael E. Jung、Joseph Pontillo
DOI:10.1021/jo016246j
日期:2002.9.1
is described. The beta-anomer of dideoxyribosyl nitriles 10a,b (prepared from glutamic acid) was converted into the methylketone 11. Addition of a silylated acetylide to 11 in diethyl ether/trimethylamine gave mainly 22a. Alkylation with methallyl halide and ozonolysis gave the ketone 24, which was then converted by hydrogenation and a second ozonolysis into the keto aldehyde 26. A two-step aldol process