Design of thymidylate synthase inhibitors using protein crystal structures: the synthesis and biological evaluation of a novel class of 5-substituted quinazolinones
作者:Stephen E. Webber、Ted M. Bleckman、John Attard、Judith G. Deal、Vinit Kathardekar、Katherine M. Welsh、Stephanie Webber、Cheryl A. Janson、David A. Matthews
DOI:10.1021/jm00058a010
日期:1993.3
The design, synthesis, and biological evaluation of a new class of inhibitors of thymidylate synthase (TS) is described. The molecular design was carried out by a repetitive crystallographic analysis of protein-ligand structures. At the onset of this project, we focused on the folate cofactor binding site of a high-resolution ternary crystal complex of Escherichia coli TS, 5'-fluorodeoxyuridylate (5-FdUMP)
This application relates to a piperazino-substituted novel cyanophenyl derivative in which a substituted carbamoyl or substituted sulfamoyl group having an aryl, heterocyclic or the like group that may have a substituent group is bonded to one nitrogen atom on the piperazine ring. The compound of this application has an anti-androgen action and is useful in preventing or treating prostatic cancer, benign prostatic hyperplasia and the like diseases.
4’-dihalo-2,2’-bipyridines from dihalopyridines via a Stillereaction is also described. 4,4'-Dibromo-2,2’-bipyridine undergoes selective monoor disubstitution processes under palladium catalysis. This short synthetic procedure is an efficient and reliable process for preparing conjugated pyridine and 2,2’-bipyridine building blocks for applications in coordination chemistry and materials science. INTRODUCTION
Histamine H.sub.2 -antagonist oxazole and thiazole derivatives and
申请人:Smith Kline & French Laboratories Limited
公开号:US04681883A1
公开(公告)日:1987-07-21
This invention relates to aminoalkylphenoxyalkyl substituted heterocycles. These compounds antagonize the action of histamine on histamine H.sub.2 -receptors in the brain. A compound of the invention is 2-[3-[3-(piperidinomethyl)phenoxy]propylamino]benzthiazole.
Photocatalytic CO<sub>2</sub> Reduction by Trigonal-Bipyramidal Cobalt(II) Polypyridyl Complexes: The Nature of Cobalt(I) and Cobalt(0) Complexes upon Their Reactions with CO<sub>2</sub>, CO, or Proton
作者:Tomoe Shimoda、Takeshi Morishima、Koichi Kodama、Takuji Hirose、Dmitry E. Polyansky、Gerald F. Manbeck、James T. Muckerman、Etsuko Fujita
DOI:10.1021/acs.inorgchem.8b00433
日期:2018.5.7
The cobalt complexes CoIIL1(PF6)2 (1; L1 = 2,6-bis[2-(2,2′-bipyridin-6′-yl)ethyl]pyridine) and CoIIL2(PF6)2 (2; L2 = 2,6-bis[2-(4-methoxy-2,2′-bipyridin-6′-yl)ethyl]pyridine) were synthesized and used for photocatalytic CO2 reduction in acetonitrile. X-ray structures of complexes 1 and 2 reveal distorted trigonal-bipyramidal geometries with all nitrogen atoms of the ligand coordinated to the Co(II) center
钴配合物Co II L1(PF 6)2(1 ; L1 = 2,6-双[2-(2,2'-联吡啶-6'-基)乙基]吡啶)和Co II L2(PF 6)2(2; L 2= 2,6-双[2-(4-甲氧基-2,2′-联吡啶-6′-基)乙基]吡啶)并用于光催化还原乙腈中的CO 2。配合物1和2的X射线结构与具有六齿聚吡啶配体的常见六配位钴配合物(其中单齿溶剂完成配位域)相反,该图揭示了扭曲的三角-双锥体几何结构,配体的所有氮原子均与Co(II)中心配位。在电化学条件下,在配合物1和2的Co(I / 0)氧化还原对附近,相对于Ag / AgNO 3(或-1.86),在E 1/2 = -1.77和-1.85 V时,在Co(I / 0)氧化还原对附近观察到了CO 2还原的催化电流。和-1.94 V vs Fc + / 0)。在光化学条件下,以2为催化剂,[Ru(bpy)3 ] 2+尽管将Co(I)呈负电性还