Synthesis of<i>N</i>-aryl-2-amino-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxamides
作者:S. Tumkevicius、M. Dailide
DOI:10.1002/jhet.5570420709
日期:2005.11
efficient synthesis of compound 4 includes the preparation of 4-methoxy derivative 7 and subsequent tandem substitution/annulation reaction with methyl mercaptoethanoate in dimethylformamide in the presence of potassium carbonate and molecular sieves 4 Å. Compound 4 was used for the synthesis of N-aryl 2-amino-4-oxo-3,4-dihydrothieno[2,3-d]-pyrimidine-6-carboxamides 10a-c, including an analog of folic
合成2-氨基-4-甲氧基硫代[2,3- d ]嘧啶-6-羧酸甲酯的合成路线(4) -由2-氨基-4,6-二氯嘧啶-5-制备亲脂性和经典抗叶酸剂的有用中间体己醛(1)已被研究。已经表明,化合物4的更有效合成包括4-甲氧基衍生物7的制备以及随后在碳酸钾和分子筛4 presence存在下与巯基乙酸甲酯在二甲基甲酰胺中的串联取代/环化反应。化合物4用于合成N-芳基2-氨基-4-氧代-3,4-二氢噻吩并[2,3- d]-嘧啶-6-羧酰胺10a-c,包括带有酰胺桥的叶酸类似物-N-(4-[(2-amino-4-oxo-3,4- dihydrothienono [2,3- d ] pyrirnidin -6-基)羰基]氨基}-苯甲酰基)-L-谷氨酸(10c)。