A radical-based synthesis of (Z,Z)-tricyclohexaprenol
作者:Denis Heissler、Thierry Jenn、Hajime Nagano
DOI:10.1016/0040-4039(91)80541-d
日期:1991.12
Addition of the isocopal-12-en-15-yl radical to a methyl 3-hydroxy-3-methylene alkenoate and stereoselective elimination of methanesulphonic acid from the mesylated adducts are the key steps of this synthesis of (Z,Z)-tricyclohexaprenol.
Synthesis of tricyclopolyprenols via a radical addition and a stereoselective elimination. Part I: Methodology
作者:Thierry Jenn、Denis Heissler
DOI:10.1016/s0040-4020(97)10259-9
日期:1998.1
tricyclopolyprenols based on the addition of the isocopalen-15-yl radical either to a 2-methylene-3-hydroxy alkenenitrile or to a methyl 2-methylene-3-hydroxy alkenoate - both prepared by a Baylis-Hillman reaction - is examined. When two model adducts, a β-acetoxy nitrile and a β-mesyloxy ester, were subjected to an elimination reaction, the former gave a trans α,β-unsaturated nitrile whereas the latter gave