3-Amino-6-methyluracil and its thio analogs were synthesized. From these thio analogs, 7-methyl-5H-1, 3, 4-thiadiazolo [3, 2-α] pyrimidin-5-one, its 2-amino and 2- or 5-thio derivatives were prepared. Reflux of thiadiazolopyrimidines with chloroacetic acid or hydrochloric acid led to the ring opening of the thiadiazole moiety to give unexpected 3-amino-6-methyluracil.
合成了 3-
氨基-6-甲基尿
嘧啶及其
硫代类似物。从这些
硫代类似物中,制备出了 7-甲基-5H-1, 3, 4-
噻二唑并[3, 2-α]
嘧啶-5-酮及其 2-
氨基和 2-或 5-
硫代衍
生物。
噻二唑并
嘧啶与
氯乙酸或
盐酸回流,导致
噻二唑分子开环,得到意想不到的 3-
氨基-6-甲基尿
嘧啶。