Diethyl 5-amino-3-methylthiophene-2,4-dicarboxylate → 2-(2-Benzyloxycarbonylaminoethyl)-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid

참여 물질

반응 단계

Using diethyl 5-amino-3-methylthiophene-2,4-dicarboxylate and benzyl N-(2-cyanoethyl)carbamate, the ring-closing reaction was carried out similarly to Production Example 1. Successively the hydrolysis was carried out similarly to Example 1, to provide 2-(2-benzyloxycarbonylaminoethyl)-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid.

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