“…5 Hz,1H,CH2I),l H ,, 3.68 (dd, J = 9.5/2.9 Hz, l H , CH21), 3.75 (s, 3H, OCH3), 3.81 5), 30.3, 32.4 (C-6), 35.5, 37.6 (C-5a), 47.7, 47.8 (C-3), 52. 2,52.3 (OCH3),56.6,120.1,140.5,145,170.9,171.4 (C02R),190.5,191.1 (CO) 5,6, pyrazolo ( Methyl (f)-3,4,5,Sa,6,7,8,9-0ctahydro-9-oxo-2,2a-diazabenzo-/cdjazulene-8-carboxylate (9b): A solution of 376 mg (1 mmol) of 7b in 15 ml of THF was added to 24 mg (1 mmol) of NaH. The suspension was stirred at room temp.…”