Synthesis and Growth Stimulant Properties of 2-Acetyl-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one Derivatives
作者:Vergush A. Pivazyan、Emma A. Ghazaryan、Roza S. Shainova、Rafael A. Tamazyan、Armen G. Ayvazyan、Aleksandr P. Yengoyan
DOI:10.1155/2017/8180913
日期:——
3-chloro-pentane-2,4-dione and further regioselective cyclization of intermediate compound (2) in high yield afforded 2-acetyl-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one (3). The halogenation and some transformations of synthesized thiazolo[3,2-a]pyrimidine (3) due to its ketone group were carried out to obtain the corresponding carboxamide, carbothioamide, sulfonohydrazide, and oxime and its alkylated
开发了一种在甲醇钠中用硫脲处理乙酰乙酸乙酯制备 6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (1) 的简便、易得且收率高的方法。后者与 3-氯-戊烷-2,4-二酮的烷基化和中间体化合物 (2) 的进一步区域选择性环化以高产率得到 2-乙酰基-3,7-二甲基-5H-噻唑并[3,2-a ]嘧啶-5-一(3)。合成的噻唑并[3,2-a]嘧啶(3)由于其酮基对其进行卤化和部分转化,得到相应的甲酰胺、硫代碳酰胺、磺酰肼、肟及其烷基化衍生物(5)。在初步生物学研究中,合成的化合物显示出生长刺激特性。与异生长素相比,其中四种的活性均高于70%。