5-hydrazinyl-1-methyl-1H-pyrazole → 4-(4-chlorophenyl)-3-cyclopropyl-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-1-(1-methyl-1H-pyrazol-5-yl)-4,5-dihydropyrrolo-[3,4-c]pyrazol-6(1H)-one

Participants

Reaction Steps

The title compound was prepared in analogy to the procedure described in Step 114.1 using 5-(4-chlorophenyl)-4-(cyclopropanecarbonyl)-1-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-3-hydroxy-1H-pyrrol-2(5H)-one (Step 117.1) and 5-hydrazinyl-1-methyl-1H-pyrazole (Step 74.2). The crude material was first purified by silica gel column chromatography (1% ammonia/5% MeOH/CH2Cl2) followed by preparative achiral SFC (column Silica, gradient 23-28% in 6 min_total 11 min). A third purification was performed by preparative HPLC (Gilson gx-281. Column: Sunfire C18, 30×100 mm, 5 mm. Flow: 30 mL/min. Gradient: 30% to 60% B in min; A=0.1% TFA in H2O, B=CH3CN. Detection: UV). The fractions were combined, basified with NaHCO3, the CH3CN was removed under reduced pressure and the resulting aqueous layer was extracted with CH2Cl2, the organic layer was washed with brine, dried over Na2SO4 and concentrated under reduced pressure to afford, after trituration in Et2O, a white solid. tR: 0.99 min (LC-MS 2); ESI-MS: 499 [M+H]+ (LC-MS 2); 1H NMR (400 MHz, DMSO-d6) δ ppm 0.03-0.14 (m, 1H) 0.67-0.80 (m, 2H) 0.80-0.92 (m, 1H) 1.78-1.85 (m, 1H) 2.42 (s, 3H) 2.61 (s, 3H) 3.85 (s, 3H) 6.55 (s, 1H) 6.63 (d, J=2.0 Hz, 1H) 7.30 (s, 1H) 7.37 (d, J=8.6 Hz, 2H) 7.46 (d, J=8.6 Hz, 2H) 7.56 (d, J=1.6 Hz, 1H) 8.39 (s, 1H).

Provenance & Evidence