Synthesis, characterization and biological studies of 1-D polymeric triphenyltin(IV) carboxylates
作者:Goran N. Kaluđerović、Reinhard Paschke、Sanjiv Prashar、Santiago Gómez-Ruiz
DOI:10.1016/j.jorganchem.2010.04.029
日期:2010.7
The triphenyltin(IV) carboxylate compounds [SnPh3(O2CCH2SXyl)}∞] (1) (Xyl = 3,5-Me2C6H3) and [SnPh3(O2CCH2SMes)}∞] (2) (Mes = 2,4,6-Me3C6H2) have been synthesized by the reaction of SnPh3Cl with one equivalent of xylylthioacetic acid or mesitylthioacetic acid, respectively. 1 and 2 have been characterized by spectroscopic methods. The cytotoxic activity of 1 and 2 was tested against human tumour
三苯基锡(IV)羧酸盐化合物[SnPh 3(O 2 CCH 2 SXyl)} ∞ ](1)(Xyl = 3,5-Me 2 C 6 H 3)和[SnPh 3(O 2 CCH 2 SMes) } ∞ ](2)(Mes = 2,4,6-Me 3 C 6 H 2)分别通过SnPh 3 Cl与一当量的二甲苯基硫代乙酸或间苯二甲硫基乙酸的反应合成。1和2已经通过光谱学方法表征。测试了1和2对来自四种不同组织起源的人类肿瘤细胞系的细胞毒活性:8505C(间变性甲状腺癌),DLD-1(结肠癌)以及对顺铂敏感的A253(头颈癌)和A549(肺癌) )并与参考复合物顺铂的那些进行比较。有趣的是,羧酸盐衍生物对所有研究细胞的细胞毒活性均高于顺铂。DNA相互作用测试也已经进行。所有研究复合物的溶液均已用不同浓度的鱼精DNA(FS-DNA)处理,观察到紫外光谱的修饰具有1.68×10 5的固有结合常数和1.02×10
Propenyl cephalosporin derivatives and process for the manufacture thereof
申请人:Basilea Pharmaceutica AG
公开号:US06583133B1
公开(公告)日:2003-06-24
Disclosed are cephalosporin derivatives of the general formula
wherein R is an organic residue with a molecular weight not exceeding 400 bonded to the adjacent sulphur atom via carbon and consisting of carbon, hydrogen, and optional oxygen, sulfur, nitrogen and/or halogen atoms; R1 is hydrogen, lower alkyl or phenyl; and A is a secondary, tertiary or quaternary nitrogen atom bound directly to the propenyl group and being substituted by an organic residue with a molecular weight not exceeding 400 and consisting of carbon, hydrogen, and optional oxygen, sulfur, nitrogen and/or halogen atoms,
as well as readily hydrolyzable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula I and of their esters and salts.
Solvent-Selective Synthesis of Diaryl Disulfides and Arylthio Acetic Acids Using Thioglycolic Acid and Copper Catalysts
作者:Junghyun Chae、Kyungmi Kim、Youngjin Shin
DOI:10.1055/a-2178-1701
日期:2024.4
An efficient Cu-catalytic protocol for the synthesis of diaryl disulfides from aryl iodides using thioglycolic acid as the sulfur source has been developed. This transformation was successful only in aqueous DMSO, and when the solvent system was switched to aqueous DMF, arylthio aceticacids, the immediate C–S coupling products, were obtained. Each synthetic protocol was optimized and applied to various