Single-Flask Multicomponent Synthesis of Highly Substituted α-Pyrones via a Sequential Enolate Arylation and Alkenylation Strategy
作者:Michael Grigalunas、Olaf Wiest、Paul Helquist
DOI:10.1021/acs.orglett.6b02969
日期:2016.11.4
Trisubstituted α-pyrones are obtained by a Pd-catalyzed three-component, single-flask operation via an α-arylation, subsequent α-alkenylation, alkene isomerization, and dienolate lactonization. A variety of coupling components under mild conditions afforded isolated yields of up to 93% of the pyrones with complete control of regioselectivity. Metal dependence was noted for three of the steps of the
A Pd-catalyzed methodology for the preparation of tertiary enamides from acyclicsecondaryamides and bromo acrylates under mild reaction conditions has been developed using [Pd2(dba)3], XantPhos, and Ag2CO3 as a base. The reaction occurs through a stereospecific metal-mediated oxidative-insertion mechanism.
使用[Pd 2(dba)3 ],XantPhos和Ag 2 CO 3作为碱,开发了在温和的反应条件下由无环仲酰胺和溴丙烯酸酯制备叔烯酰胺的Pd催化方法。该反应通过立体定向金属介导的氧化插入机制发生。
Design and synthesis of 7H-pyrrolo[2,3-d]pyrimidines as focal adhesion kinase inhibitors. Part 2
A series of 2-amino-9-aryl-7H-pyrrolo[2,3-d]pyrimidines were designed and synthesized as focal adhesion kinase (FAK) inhibitors using molecular modeling in conjunction with a co-crystal structure. Chemistry was developed to introduce functionality onto the 9-aryl ring, which resulted in the identification of potent FAK inhibitors. In particular, compound 32 possessed single-digit nanomolar IC(50) and