Chiral base mediated transformation of cyclic 1,3-diketones
作者:Benjamin Butler、Thomas Schultz、Nigel S. Simpkins
DOI:10.1039/b606864b
日期:——
Treatment of certain 1,3-diketones with a chiral lithium amide base results in the formation of a non-racemic lithium mono-enolate; these intermediates can be transformed directly into chiral hydroxyketone products by reduction with DIBAL-H in high yield and with selectivities of up to 99% ee.
BROOKS, D. W.;MAZDIYASNI, H.;GROTHAUS, P. G., J. ORG. CHEM., 52,(1987) N 15, 3223-3232
作者:BROOKS, D. W.、MAZDIYASNI, H.、GROTHAUS, P. G.
DOI:——
日期:——
Assembly of Terpenoid Cores by a Simple, Tunable Strategy
作者:Ouidad Lahtigui、Fabien Emmetiere、Wei Zhang、Liban Jirmo、Samira Toledo-Roy、John C. Hershberger、Jocelyn M. Macho、Alexander J. Grenning
DOI:10.1002/anie.201608863
日期:2016.12.19
Oxygenated, polycyclic terpenoid natural products have important biological activities. Although total synthesis of such terpenes is widely studied, synthetic strategies that allow for controlled placement of oxygen atoms and other functionality remains a challenge. Herein, we present a simple, scalable, and tunable synthetic strategy to assemble terpenoid‐like polycycloalkanes from cycloalkanones