1-Oxo-3-aryl-1H-indene-2-carboxylic acid derivatives as selective inhibitors of fibroblast growth factor receptor-1 tyrosine kinase
摘要:
Fibroblast growth factor receptor (FGFr) mediated signal transduction is implicated in vascular proliferative diseases and some cancers. We have identified methyl 1-oxo-3-phenyl-1H-indene-2-carboxylic ester as a small molecule inhibitor of the tyrosine kinase activity of FGFr-1, (IC50 = 5.1 mu M). We report here the synthesis and structure-activity studies about this template core. Additionally, screening of this series against a panel of tyrosine kinases shows selective inhibition of FGFr. (C) 1997 Elsevier Science Ltd.
1,3-Dipolar cycloaddition of nitrones with nitriles.
作者:Pedro H.H. Hermkens、Jan H.v. Maarseveen、Chris G. Kruse、Hans W. Scheeren
DOI:10.1016/s0040-4020(01)89838-0
日期:——
nitriles 14–16, proceeded under thermal as well as underhighpressure conditions with complete regioselectivity to give Δ4-1,2,4-oxadiazolines 17–19. In general, the cycloaddition seemed to be controlled by a HOMO(nitrone)- LUMO(nitrile) interaction. However, a crossover in the orbital control is probable observed with nitrile 16c. Nitrone-nitrile cycloadditions are normal typeII cycloadditions so that
The reactions of platinum(O) and palladium(O) tertiary phosphine complexes with phenyl dicyanooxiranes
作者:Robert B. Osborne、James A. Ibers
DOI:10.1016/s0022-328x(00)89217-7
日期:1982.7
The phenyldicyanooxiranes, trans-2,3-dicyano-2,3-diphenyloxirane, 2,2-dicyano-3,3-diphenyloxirane, and 2,2-dicyano-3-phenyloxirane, are cleaved by platinum(O) tertiaryphosphinecomplexes to afford zerovalent metal—olefin complexes and phosphine oxides. The π-olefin products were characterized by 1H and 31P 1H NMR spectroscopy and by an X-ray structure determination of Pt[trans-Ph(CN)CC(CN)Ph](PPh3)2·CH3OH
Knöevenagelreactions of aldehydes and ketones with malononitrile, isopropyl cyanoacetate and diisopropyl malonate catalyzed by Ti(O-i-Pr)4 proceeded smoothly in i-PrOH to give the corresponding reaction products in good to high yield. 3-Substituted coumarins were prepared by the present method.
The Knoevenagel condensation using quinine as an organocatalyst under solvent-free conditions
作者:Kavita Jain、Saikat Chaudhuri、Kuntal Pal、Kalpataru Das
DOI:10.1039/c8nj04219e
日期:——
organocatalyst to afford various electrophilic alkenes in excellent yields (up to 90%). In the presence of a catalytic amount of quinine (15 mol%), the reaction proceeded at room temperature (RT) undersolvent-freeconditions. In this green approach, the organocatalyst was recovered and recycled for up to four cycles without appreciable loss of activity.