Borane-Catalyzed Reductive α-Silylation of Conjugated Esters and Amides Leaving Carbonyl Groups Intact
作者:Youngchan Kim、Sukbok Chang
DOI:10.1002/anie.201508669
日期:2016.1.4
valuable α‐silyl carbonyl products. The α‐silylation occurs chemoselectively, thus leaving the labile carbonylgroups intact. The reaction features a broad scope of both acyclic and cyclic substrates, and the synthetic utility of the obtained α‐silyl carbonyl products is also demonstrated. Mechanistic studies revealed two operative steps: fast 1,4‐hydrosilylation of conjugated carbonyls and then slow
本文描述了由B(C 6 F 5)3催化的α,β-不饱和酯和酰胺的氢化硅烷化反应,以提供具有合成价值的α-甲硅烷基羰基产物。α-甲硅烷基化是化学选择性发生的,因此保留了不稳定的羰基。该反应具有无环和环状底物的广泛范围,并且还证明了所得α-甲硅烷基羰基产物的合成效用。机理研究揭示了两个操作步骤:共轭羰基的快速1,4-氢化硅烷化,然后减慢甲硅烷基醚中间体的甲硅烷基迁移。
Monoterpenic fragment analogs of aplasmomycin as potential antimalarials
作者:N. Balu、Jacob V. Thomas、Sujata V. Bhat
DOI:10.1021/jm00113a021
日期:1991.9
Seven analogues of monoterpenic fragment of aplasmomycin were synthesized as targeted antimalarial agents. The potency of the compound 6 was comparable with the sesquiterpene lactone artemisinin and the antibiotic aplasmomycin in vivo against Plasmodium berghei yoelli.
Balu N., Bhat Sujata V., J. Chem. Soc. Chem. Commun, (1994) N 7, S 903-904