作者:Lynda J. Brown、Ian B. Spurr、Stephen C. Kemp、Nicholas P. Camp、Karl R. Gibson、Richard C. D. Brown
DOI:10.1021/ol800767e
日期:2008.6.1
An asymmetrictotalsynthesis of (+)-cis-sylvaticin is described. Key steps include the use of permanganate-mediated oxidativecyclization of 1,5-dienes to synthesize the two major fragments 2 and 3 and a catalytically efficient tethered RCM to unite these THF-containing fragments. In addition, t-BuP 4 base was found to reliably promote rapid alkylation of the butenolide precursor fragment 4.