Lithium hydroxide, monohydrate → 2-(3-(Hydroxymethyl)-4-(1-methyl-5-(5-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-2-yl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-one

Participants

Reaction Conditions

Reaction Steps

A mixture of 113j (300 mg, 0.50 mmol) and LiOH.H2O (120 mg, 2.50 mmol) in iPrOH/THF (1:1, 3 mL) and H2O (1 mL) was stirred at 30° C. for 2 h. The mixture was evaporated in vacuo and the residue was extracted with EtOAc (10 mL×2). The combined EtOAc extract was concentrated under reduced pressure and the residue was purified with reverse-phase prep-HPLC to afford 113 (91 mg, 32%) as a white solid. LCMS: [M+H]+ 555. 1H NMR (500 MHz, CDCl3) δ 8.47 (d, J=5.0, 1H), 7.95 (d, J=5.0, 1H), 7.72 (d, J=2.0, 1H), 7.42 (s, 1H), 7.35 (d, J=5.0, 1H), 6.89 (s, 1H), 5.69 (s, 1H), 5.01-5.02 (m, 1H), 4.61-4.62 (m, 1H), 4.48-4.49 (m, 1H), 4.32-4.33 (m, 1H), 4.15-4.07 (m, 4H), 3.86-3.87 (m, 1H), 3.69 (s, 3H), 3.60-3.59 (m, 2H), 2.88 (t, J=6.0, 2H), 2.61-2.56 (m, 4H), 2.47 (s, 3H), 1.89-1.90 (m, 2H), 1.78-1.79 (m, 2H)

Provenance & Evidence