反应详情

The title compound was prepared from 3-benzyloxy-5-methyl-4-oxo-7-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylic acid using a procedure similar to that described in Example 2, Step 5, except that 4-fluoro-2-[(methylamino)carbonyl]benzylamine hydrochloride was used in place of 4-fluorobenzylamine. 1H NMR (400 MHz, d6-DMSO) δ 8.51 (d, J=4.8 Hz, 1H), 8.38 (t, J=4.0 Hz, 1H), 7.43-7.24 (m, 11H), 6.92-6.91 (m, 2H), 5.78-5.77 (m, 1H), 5.36 (dd, J=10.8, 38.4 Hz, 2H), 4.46 (dd, J=6.0, 18.4 Hz, 2H), 4.23 (dd, J=4.4, 13.6 Hz, 1H), 3.81 (dd, J=3.2, 13.6 Hz, 1H), 2.89 (s, 3H), 2.73 (s, 3H); ES MS (M+1)=542.