Stereoselective Assembly of a 1,3-Diene via Coupling between an Allenic Acetate and a (<i>B</i>)-Alkylborane: Synthetic Studies on Amphidinolide B1
作者:Amit K. Mandal、John S. Schneekloth,、Craig M. Crews
DOI:10.1021/ol051175m
日期:2005.8.1
has been described. The C16 stereochemistry was set by asymmetric allylic alkylation. C21 and C25 stereogenic centers were set by an enantioselective/diastereoselective double allylation reaction. The C9 configuration was set by an asymmetric heteroene reaction. A differentially substituted stereodefined 1,3-diene iodide was synthesized by iodide-mediated S(N)2' reaction. A novel stereoselective method