作者:Keith Jones、Roger F. Newton、Christopher J. Yarnold
DOI:10.1016/s0040-4020(96)00074-9
日期:1996.3
1-(2-Cyclohexenyl-1-carbonyl)-piperidine-2-carboxaldehyde oxime (23) was prepared in 5 steps from pyridine-2-carboxaldehyde. Oxidation with NaOCl afforded the corresponding nitrile oxide which cyclized to give a 1:1 ratio of diastereomers 2a alpha,3,4,5,5a alpha,9,10,11 alpha,beta,11c alpha-decahydro-6H,8H-[1,2] benzisoxazolo [3,4-ab] quinolizin-6-one (24A) and 2a alpha,3,4,5,5a alpha,9,10,11a alpha,11c alpha-decahydro-6H,8H-[1,2] benzisoxazolo [3,4-ab] quinolizin-6-one (24B) in a best yield of 30%.