Domino C–H Activation/Directing Group Migration/Alkyne Annulation: Unique Selectivity by d<sup>6</sup>-Cobalt(III) Catalysts
作者:Cuiju Zhu、Rositha Kuniyil、Becky B. Jei、Lutz Ackermann
DOI:10.1021/acscatal.9b05413
日期:2020.4.3
control in Cp*CoIII-catalyzed domino C–Hactivation/pyridine directing group migration/alkyne annulation has been accomplished through the nucleophilicity of an organometallic cobalt intermediate with a d6 electron configuration. Detailed mechanistic studies provided compelling evidence for a facile C–Hactivation along with a favorable migration of the directing group for the Cp*CoIII catalysis, rather
通过具有ad 6电子构型的有机金属钴中间体的亲核性,完成了Cp * Co III催化的多米诺骨牌CH-H活化/吡啶引导基团迁移/炔烃环化反应中的不同选择性控制。详细的机理研究提供了令人信服的证据,证明了C–H的活化很容易,并且Cp * Co III催化的导向基团有良好的迁移,而不是(CO)3 Mn I歧管观察到的β-氧消除。
Benzo[<i>e</i>]isoindole-1,3-diones as Potential Inhibitors of Glycogen Synthase Kinase-3 (GSK-3). Synthesis, Kinase Inhibitory Activity, Zebrafish Phenotype, and Modeling of Binding Mode
作者:Haixia Zou、Liyan Zhou、Yuanzhen Li、Yi Cui、Hanbing Zhong、Zhengying Pan、Zhen Yang、Junmin Quan
DOI:10.1021/jm9013373
日期:2010.2.11
Benzo[e]isoindole-1,3-dione derivatives were synthesized, and the effects on GSK-3 beta activity and zebrafish embryo growth were evaluated. A series of derivatives show obvious inhibitory activity against GSK-3 beta. The most potent inhibitor, 7,8-dimethoxy-5-methylbenzo[e]isoindole-1,3-dione (8a), shows nanomolar IC50 and obvious phenotype on zebrafish embryo growth associated with the inhibition of GSK-3 beta at low micromolar concentration. The interaction mode between 8a and GSK-3 beta was characterized by computational modeling.