反应详情

By substituting 1-phenylethyl-4-hydrazino-1H-pyrazolo-[3,4-b]-pyridine-5-carboxylic acid, methyl ester for the 1-ethyl-4-hydrazino-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid, ethyl ester and 2-iminomethylpentanonitrile for the 3-iminobutyronitrile in the procedure of Example 1 a and proceeding as in parts b and c, 3-propyl-8-phenylethyl-4H-pyrazolo[1,5-a]pyrazolo4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one and 4-methyl-8-phenylethyl-3-propyl-4H-pyrazolo-[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one, respectively, are obtained.