作者:Jürgen Martens、Jürgen Kintscher、Wolfgang Arnold
DOI:10.1055/s-1991-26505
日期:——
Synthesis of 4-Thiazolidineacetic Acids and ß-Homopenicillamine 4-Thiazolidineacetic acids 2, previously unknown homologs of the intensively examined thiazolidine-4-carboxylic acids, were readily prepared by addition of malonic acid to the azomethine group of various 2,5-dihydro-1,3-thiazoles 1, followed by decarboxylation at room temperature. Hydrolysis of 2,2,5,5-tetramethyl-4-thiazolidineacetic acid (2e) lead to ß-homopenicillamine 3, a new homolog of the pharmacologically interesting penicillamine, and its thiolactone hydrochloride 4.
4-Thiazolidineacetic Acids and ß-Homopenicillamine 的合成 4-Thiazolidineacetic Acids 2 是之前未知的噻唑烷-4-羧酸的同系物,通过丙二酸与各种 2,5-二氢-1,3-噻唑 1 的偶氮甲基相加,然后在室温下进行脱羧反应,很容易就能制备出来。2,2,5,5-四甲基-4-噻唑烷乙酸(2e)水解后可得到 ß-高青霉胺 3(一种具有药理作用的青霉胺的新同系物)及其硫内酯盐酸盐 4。