SYNTHESIS AND PROPERTIES OF METHYL 4,6-DIARYL-2(3H)-THIOXO-1,4-DIHYDROPYRIDINE-3-CARBOXYLATES
作者:A. Krauze、I. Šturms、J. Popelis、L. Sile、G. Duburs
DOI:10.1515/hc.2005.11.1.37
日期:2005.1
elevation of reaction temperature in the case of condensation of chalcones i with 2-cyanothioacetamide yielded 2(3H)-thioxo-l,4-dihydropyridine3-carbonitriles and the corresponding 2(lH)-thioxopyridine-3-carbonitriles [7,8], but by making use of methyl 2-thiocarbamoylacetate (2) as Michael donor gave rise to further hydrolysis and decarboxylation of ester group of thiones 5 and complicated reaction mixture
4,6-二芳基]-2(3H)-硫代-1,4-二氢吡啶-3-羧酸甲酯 (5) 是通过芳基亚甲基苯乙酮 i 与 2-硫代氨基甲酰乙酸甲酯 (2) 在哌啶存在下的迈克尔反应获得的,随后用 HCl/EtOH 溶液处理。2-氨基甲酰基甲硫基-1,4-二氢吡啶-3-羧酸甲酯7通过硫酮5与碘乙酰胺的烷基化制备,但3-乙氧基羰基甲基-4,7二氢噻唑并[3,2-a]吡啶-8-羧酸甲酯8通过处理在等摩尔量的三乙胺存在下,硫酮 5a 与 4-氯乙酰乙酸乙酯。引言 2(3H)-Thioxo-1,4-dihydropyridine-3-carbonitriles 由于其高反应性 [1] 并显示出心血管 [2,3]、保肝 [4]、抗氧化剂 [5] 和抗自由基 [6] ] 活动。2(3H)-thioxo-l的缺点,4-dihydropyridine-3-carbonitriles 在稀释溶液中不稳定,溶解度不足,无法进行详细的生物学研究。在l