反应详情

The compound was prepared from 5-(4-fluorophenyl)-4-oxo-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazine-2-carboxylic acid ethyl ester using the method described in the preceding example 50 (5-cyclopropylmethyl-2-hydroxymethyl-6,7-dihydro-5H-pyrazolo[1,5-a]pyrazin-4-one.