Stereoselective synthesis of bicyclic lactones by annelation with functionalised orthoesters
作者:Nuno Maulide、István E. Markó
DOI:10.1039/b600677a
日期:——
An efficient two-step annelation of functionalised orthoesters with trimethylsilyloxyfuran derivatives, which delivers suitably decorated bicyclo[3.n.0]lactones in high overall yields and with complete diastereocontrol of up to three contiguous stereocenters, is reported.
2-(Trimethylsilyloxy)furan as a Dianion Equivalent: A Two-Step Synthesis of Functionalized Spirocyclic Butenolides
作者:Nuno Maulide、István E. Markó
DOI:10.1021/ol061284g
日期:2006.8.1
[reaction: see text] The use of 2-(trimethylsilyloxy)furan derivatives as dianion equivalents leads to a general and connective spiroannulation protocol for the efficient preparation of spirocyclic butenolides.