Hickmott, Peter W; Simpson, Richard, Journal of Chemical Research, Miniprint, 1992, # 9, p. 2447 - 2475
作者:Hickmott, Peter W、Simpson, Richard
DOI:——
日期:——
A novel extension of the Stork–Jung vinylsilane Robinson annelation procedure for the introduction of the cyclohexene of guanacastepene
作者:Barry B Snider、Bo Shi
DOI:10.1016/s0040-4039(01)02026-3
日期:2001.12
has been developed in a model system to introduce the cyclohexenering of guanacastepene. Cyclohexenone 16 is prepared by sequential methylation and alkylation with allylic iodide 15. One-pot epoxidation, protodesilylation and hydrolysis of the THP forms dione 19, which cyclizes with NaOMe to 24 in 57% overall yield. Reduction, Mitsunobu inversion, and selective oxidation of the primary alcohol forms