Edgar et al., Journal of the Chemical Society, 1957, p. 1083,1087
作者:Edgar et al.
DOI:——
日期:——
Stereoselectivities of intramolecular Diels-Alder reactions. Formation of the taxane skeleton
作者:Kunio Sakan、Douglas A. Smith、Stefan A. Babirad、Frank R. Fronczek、K. N. Houk
DOI:10.1021/jo00007a014
日期:1991.3
The stereodirecting effect of an alkyl (Me) group on the diene and/or dienophile on the intramolecular Diels-Alder reaction leading to the formation of an eight-membered ring has been studied under both thermal and Lewis acid catalyzed cyclization conditions. The synthesis and cycloaddition reactions of tetraenes 2a-d, leading to the formation of the taxane skeleton, is described. Selectivity is shown to vary under thermal conditions depending upon substitution pattern, while the catalyzed cycloaddition invariantly gives the cis-fused product.
CAIRNS, PETER M.;HOWES, COLIN;JENKINS, PAUL R., J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N, C. 627-632
作者:CAIRNS, PETER M.、HOWES, COLIN、JENKINS, PAUL R.
DOI:——
日期:——
CAIRNS, P. M.;HOWES, C.;JENKINS, P. R.;RUSSELL, D. R.;SHERRY, L., J. CHEM. SOC. CHEM. COMMUN., 1984, N 22, 1487-1488
作者:CAIRNS, P. M.、HOWES, C.、JENKINS, P. R.、RUSSELL, D. R.、SHERRY, L.