C−H Insertion Approach to the Synthesis of <i>e</i><i>ndo,</i><i>e</i><i>xo</i>-Furofuranones: Synthesis of (±)-Asarinin, (±)-Epimagnolin A, and (±)-Fargesin
作者:Richard C. D. Brown、Carole J. R. Bataille、Gordon Bruton、Jeremy D. Hinks、Nigel A. Swain
DOI:10.1021/jo015829q
日期:2001.10.1
A series of novel 5-aryl-4-aryloxymethyl-3-diazotetrahydrofuran-2-ones (12, 24, and 35a/b) have been prepared and found to undergo regio- and stereoselective C-H insertion reactions to afford 2,6-diaryl-3,7-dioxabicyclo[3.3.0]octane-8-ones (18, 26, and 36a/b) with endo,exo stereochemistry. Subsequent reduction of the lactone ring and cyclization of the resulting diols 27 and 37a/b permitted the synthesis