The present invention provides a compound of formula I:
wherein the variables are as defined herein. The present invention also provides processes for preparing the compounds of formula I, and intermediates thereof, pharmaceutical compositions comprising those compounds, and methods of using the compounds and compositions.
A novel concept for regiochemical and stereochemical control in Lewis acid promoted [3 + 4] annulation reactions
作者:Gary A. Molander、Kimberly O. Cameron
DOI:10.1021/jo00008a008
日期:1991.4
Studies on the regioselective and steroselective formation of a variety of 2-carbalkoxy-8-oxabicyclo-[3.2.1]octan-3-ones by means of a Lewis acid promoted [3 + 4] annulation process leads to a novel concept for selectivity in Lewis acid promoted carbonyl addition reactions.
Enamine synthesis of 4-ketoaldehydes
作者:Kenny U. Acholonu、Donald K. Wedegaertner
DOI:10.1016/s0040-4039(01)91876-3
日期:1974.1
MOLANDER, GARY A.;CAMERON, KIMBERLY O., J. ORG. CHEM., 56,(1991) N, C. 2617-2619