A facile approach for synthesis of thiazines-, thiazoles- and triazoles-annulated 6-styryl-2-thiouracil derivative
作者:H. A. Morsy、A. H. Moustafa
DOI:10.1007/s13738-019-01760-w
日期:2020.1
Utility of 4-oxo-6-styryl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 1 in synthesis of a new series of fused pyrimidines was described. Pyrimido[2,1-b][1,3]thiazines 6–9 were obtained via Michael addition of compound 1 to the polarized systems 2–5 in the presence of nanosized ZnO. S-alkylation of pyrimidine 1 followed by cyclization with phenacyl bromide, monochloroacetic acid, chloroacetonitrile
描述了4-氧代-6-苯乙烯基-2-硫代-1,2,3,4-四氢嘧啶-5-腈1在合成一系列新的嘧啶系列中的应用。嘧啶并[2,1- b ] [1,3]噻嗪6 - 9经由迈克尔加成化合物的获得1到偏振系统2 - 5中的ZnO纳米的存在。小号嘧啶的烷基化1接着用苯甲酰甲基溴,一氯代乙酸,氯乙腈和草酰氯的环化,得到所需的噻唑并[3,2-一个]嘧啶10 - 13。化合物1的肼解作用随后用乙酸酐,甲酸,二硫化碳和加成环化苯甲酰氯,得到三唑并[4,3一]嘧啶15 - 18。抗菌药物筛选显示噻唑[3,2- a ]嘧啶11和12对革兰氏阳性菌和革兰氏阳性菌均具有很高的活性。