Trichothecene synthesis using organoiron complexes: diastereoselective total syntheses of (.+-.)-trichodiene, (.+-.)-12,13-epoxytrichothec-9-ene, and (.+-.)-trichodermol
Reaction of tin enolates with substituted tricarbonylcyclohexadienyliumiron hexafluorophosphate electrophiles: diastereoselective synthesis of (±)-trichodiene
作者:Anthony J. Pearson、Michael K. O'Brien
DOI:10.1039/c39870001445
日期:——
A number of tinenolates react cleanly with tricarbonylcyclohexadienyliumiron cations, in cases where the use of lithium enolates or silyl enol ethers is problematic; this new carbon–carbon bond-forming reaction allows diastereoselective construction of proximate quaternary centres and provides a key step in a short synthesis of (±)-trichodiene.
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
Trichothecene synthesis using organoiron complexes: diastereoselective total syntheses of (.+-.)-trichodiene, (.+-.)-12,13-epoxytrichothec-9-ene, and (.+-.)-trichodermol