Focused libraries of enamine derivatives with a nonacidic, nonelectrophilic core structure were screened for inhibitors of dual-specificity protein phosphatases, and an o-hydroxybenzyl derivative RE44 (10d) was identified as a selective inhibitor of CDC25A/B. This inhibitor induced cell-cycle arrest of tsFT210 cells at the G2/M phase and inhibited dephosphorylation of the CDC25B substrate CDK1....

In the title compound, C(14)H(11)ClN(2)O(4)·CH(3)OH, the mol-ecule adopts an E conformation about the C=N bond. The compound is in the enamine-keto form. The two terminal benzene rings make a dihedral angle of 10.53 (9)°. Intra-mol-ecular O-H⋯O and O-H⋯N hydrogen bonding stabilizes the mol-ecular structure. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules, forming chains running along t...

Asymmetric hydrogenation of C=C bonds is of the highest importance in organic synthesis, and such reactions are currently carried out with organometallic homogeneous catalysts. Achieving heterogeneous metal-catalyzed hydrogenation, a highly desirable goal, necessitates forcing the crucial enantiodifferentiating step to take place at the metal surface. By synthesis and application of six chiral ...

Crystallographic studies of the complex between beta-lactamase and clavulanate reveal a structure of two acyl-enzymes with covalent bonds at the active site Ser70, representing two different stages of inhibitor degradation alternately occupying the active site. Models that are consistent with biochemical data are derived from the electron density map and refined at 2.2 A resolution: cis enamine...

A series of new β-ketoimines containing a ferrocene moiety and their BF2 complexes have been synthesized structurally characterized. The solvatochromism the was studied, putting in evidence redshift with increasing solvent polarity. This positive can be attributed to more polarized excited state compared ground state, due intramolecular charge transfer (ICT) transitions. exhibited weak emission...