Trichothecene synthesis using organoiron complexes: diastereoselective total syntheses of (.+-.)-trichodiene, (.+-.)-12,13-epoxytrichothec-9-ene, and (.+-.)-trichodermol
Asymmetric Synthesis of (−)-Trichodiene. Generation of Vicinal Stereogenic Quaternary Centers via the Thio-Claisen Rearrangement
作者:René M. Lemieux、A. I. Meyers
DOI:10.1021/ja9804159
日期:1998.6.1
has been shown to serve as important intermediates for producing α-quaternary alkyl derivatives 8, which were readily transformed into the title compound (−)-1. The reversibility of the thio-Claisenrearrangement, 15⇌8, was clearly demonstrated and appears to be unprecedented. Solvent effects to alter the equilibrium position were studied and found to have only a moderate, but beneficial effect. The