3-Aminoacetylthiazolidine-4-carboxylate esters and their l-thia-4-azaspiro[4.5]decane-3-carboxylate derivatives. Synthesis and stereochemical properties
Dimethyl thiazolidine-2,4-dicarboxylate 2 and ethyl l-thia-4-azaspiro[4.5]decane-3-carboxylates 3-5 were obtained as a diastereoisomeric mixture while their 3-aminoacetyl derivatives were isolated in only one isomeric form. These reactions of N-acylation were stereoselective, which can be explained by an interconversion of the diastereoisomers via a seco intermediate. The 1H nmr analysis of amides
获得非对映异构体混合物的二甲基噻唑烷-2,4-二羧酸酯2和1-噻吩-4-氮杂螺[4.5]癸烷-3-羧酸乙酯3-5,而它们的3-氨基乙酰基衍生物仅以一种异构体形式分离。N-酰化的这些反应是立体选择性的,这可以通过非对映异构体经由山高中间体的相互转化来解释。酰胺6和11的1 H nmr分析显示同时存在顺式和反式酰胺键构象,而螺酰胺8-10和13-15仅观察到一个顺式构象。
Synthesis and biological activity of cysteine and thiazaolidine-4-carboxylic acid derivatives
作者:I. F. Faermark、G. Ya. Shvarts、S. I. Grizik、V. G. Granik
DOI:10.1007/bf00764414
日期:1990.4
carboxylic groups together with some form of modified amino group (amide or amidine moieties [4]) are known to be capable of inhibiting angiotensin-converting enzyme (kininase II, ACE) and are of interest as potential antihypertensive agents [ii]. Moreover, compounds of this type may exert an effect on the activity of the endogenous antinociceptive system, since kininase II belongs to a group of enzymes
已知许多含有巯基和羧基以及某种形式的修饰氨基(酰胺或脒部分 [4])的化合物能够抑制血管紧张素转换酶(激肽酶 II,ACE),并且具有潜在的抗高血压作用代理 [ii]。此外,这种类型的化合物可能对内源性镇痛系统的活性产生影响,因为激肽酶 II 属于参与内源性阿片肽失活的一组酶 [i0, 27]。
FAERMARK, I. F.;SHVARTS, G. YA.;GRIZIK, S. I.;GRANIK, V. G., XIM.-FARMATS. ZH., 24,(1990) N, S. 35-38
作者:FAERMARK, I. F.、SHVARTS, G. YA.、GRIZIK, S. I.、GRANIK, V. G.