| 摘要 |
PURPOSE:Furo [2,3-d] pyrimidine derivatives I(R1 is lower alkyl, lower alkenyl or aralkyl; R2 is lower alkyl, phenyl, carboxyl, methylsufonyl, methoxycarbonyl or nitro-substituted phenyl) and their acid salts, e.g. 2-ethylmercapto4-amino-5-methyl-furo-[2,3-d] pyrimidine. |
