[EN] 4(SPIROPIPERIDINYL)METHYL SUBSTITUTED PYRROLIDINES AS MODULATORS OF CHEMOKINE RECEPTOR ACTIVITY<br/>[FR] 4(SPIROPIPERIDINYL)METHYL PYRROLIDINES SUBSTITUEES SERVANT DE MODULATEURS DE L'ACTIVITE DES RECEPTEURS DES CHIMIOKINES
申请人:MERCK & CO INC
公开号:WO2004058763A1
公开(公告)日:2004-07-15
3-Substituted pyrrolidines having a spiropiperidinylmethyl substituent on the 4-position of the ring are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-3 and/or CCR-5.
Organic heterocyclothiazenes. Part 5. Cycloaddition reactions of tetrasulphur tetranitride with highly electron deficient alkynes
作者:Peter J. Dunn、Charles W. Rees
DOI:10.1039/p19870001579
日期:——
4-trifluorobutynonitrile (4) similarly give the trithiadiazepines (10) and (12), though more slowly and in slightly lower yields. Structures (8) and (10) correct literature assignments. The analogous reactions of ethyl 3-formylpropynoate (6), hex-3-yne-2,5-dione (7), and butynedial, like those of acetylenedicarboxylate esters, give complex mixtures from which trithiadiazepines, trithiatriazepines, and thiadiazoles
与先前的复杂S 4 N 4-炔反应相反,丁腈和S 4 N 4的处理可得到1,3,5,2,4-三噻二氮杂-6,7-二碳腈(8)和1, 2,5-噻二唑-3,4-二甲腈(9)非常干净,收率很高。六氟丁-2-炔和4,4,4-三氟丁腈(4)类似地产生三噻二氮杂(10)和(12),尽管速度较慢且收率略低。结构(8)和(10)纠正文献分配。3-甲酰基丙酸乙酯(6),己-3-炔-2,5-二酮(6)的类似反应7),丁炔和乙炔二羧酸酯一样,得到复杂的混合物,从中可以不同地分离出三噻二氮杂,三噻三氮杂和噻二唑。建议对这些结果进行机械合理化。由S 4 N 4和1,1,4,4-四乙氧基丁炔(20)以高收率制备1,2,5-噻二唑-3,4-二甲醛(18b),然后进行水解。该二醛和其他3,4-二氧代-1,2,5-噻二唑首次用于制备1,2,5-噻二唑并[3,4- d ]哒嗪及其衍生物(22)。改进的3-甲酰基丙酸乙酯(6)和十六烷基-3-炔-2
Tuning novel
<scp>Cd(II)</scp>
topology networks through choosing three neutral and zwitterionic
<scp>N/O</scp>
‐donor ligands: Synthesis, structures, and fluorescence
Three new CdII coordination polymers (CPs) have been synthesized by hydrothermal reactions of Cd(OAc)2, 1,2,5‐thiadiazole‐3,4‐dicarboxylic acid (H2tdzdc), and distinct N/O‐donor ligands. They exhibit two‐dimensional (2D) and three‐dimensional (3D) structures with different topology networks including rob, zzx, and cem. The introduction of 4,4‐bipyridine (4,4‐bipy), [4,4‐bipyridine]1,1‐dioxide (Obpy)
三个新的镉II配位聚合物(CPS)已经通过(OAC)镉水热反应合成2,1,2,5-噻二唑-3,4-二羧酸(H 2 tdzdc),且不同的N / O供体配体。它们表现出具有不同拓扑网络(包括rob,zzx和cem)的二维(2D)和三维(3D)结构。引入4,4-联吡啶(4,4-联吡啶),[4,4-联吡啶] 1,1-二氧化物(Obpy)和1,4-双((1 H -1,1,2,4-三唑-1-基)甲基)苯(tmb)对于构建互穿网络非常有用。此外,发光性能1,2,和3已经通过实验和理论方法进行了详细研究。密度泛函理论(DFT)计算表明,在化合物3的激发中,电子将从金属转移到配体。
Peroxycarboxylic ester initiators derived from nitrogen heterocycles
申请人:Imation Corp.
公开号:US05599652A1
公开(公告)日:1997-02-04
Peroxycarboxylic ester photoinitiators derived from aromatic nitrogen containing heterocyclic carboxylic acids are described. The heterocyclic aromatic ring may contain additional nitrogen atoms, be fused with another aromatic ring system, be substituted with an additional peroxycarboxylic ester group and/or be substituted with an electron group having a Hammett sigma value greater than 0.1. The peroxycarboxylic ester photoinitiators have been found to be useful in photopolymerizable compositions and photosensitive elements.