Stereocontrolled synthesis of spirodihydrouracil nucleoside
摘要:
Synthesis of the spiro-dihydrouracil derivative of (+)-hydantocidin (2) is described. The pivotal step is a Lewis acid-mediated C-glycosidation of the protected D-psicose 3 with trimethylsilyl cyanide, which proceeded in good yield and beta-selectivity. Synthesis of 2 was accomplished in 27% overall yield from 3.
Stereocontrolled synthesis of spirodihydrouracil nucleoside
摘要:
Synthesis of the spiro-dihydrouracil derivative of (+)-hydantocidin (2) is described. The pivotal step is a Lewis acid-mediated C-glycosidation of the protected D-psicose 3 with trimethylsilyl cyanide, which proceeded in good yield and beta-selectivity. Synthesis of 2 was accomplished in 27% overall yield from 3.