Studies on the Synthesis of Landomycin A: Synthesis and Glycosidation Reactions of <scp>l</scp>-Rhodinosyl Acetate Derivatives
作者:William R. Roush、Chad E. Bennett、Sara E. Roberts
DOI:10.1021/jo015756a
日期:2001.9.1
An efficient, eight-step synthesis of L-rhodinosyl acetate derivative 3 is described. The synthesis originates from methyl (S)-lactate and involves a highlystereoselective, chelate-controlled addition of allyltributylstannane to the lactaldehyde derivative 7. The beta-anomeric configuration of 3 was established with high selectivity by acetylation of the pyranose precursor with Ac(2)O and Et(3)N in