The asymmetric synthesis of the macrolide antibiotics (+)-rutamycin B (1) and (+)-oligomycin C (2) is described. The approach relied on the synthesis and coupling of the individual spiroketal fragments 3a and 3b with the C1-C17 polyproprionate fragment 4. The preparation of the spiroketal fragments was achieved using chiral (E)-crotylsilane bond construction methodology, which allowed the introduction
Application of chiral (E)-crotylsilanes in synthesis: The asymmetric synthesis of the C19C34 spiroketal fragment of rutamycin B
作者:Nareshkumar F. Jain、James S. Panek
DOI:10.1016/s0040-4039(97)00096-8
日期:1997.2
The asymmetricsynthesis of the spiroketal fragment of rutamycin B is reported employing allylsilane bond construction methodology for the introduction of five of the eight stereogenic centers. In this paper, the construction of the C19C28 and C29C34 fragments as well as their coupling through an alkylation reaction of a lithiated N,N-dimethylhydrazone are described.