Sodium Bicarbonate → HCID 178522018, compound

Participants

Reaction Steps

(1 R)[N-(3-{1-Perhydro-2H-pyran-2-yl-5-[1-(triphenylmethyl)(1,2,4-triazol-3-yl)](1H-indazol-3-yl)}phenyl)carbamoyl]phenylmethyl acetate was dissolved in 4 mL of 4.0 N HCl in 1,4-dioxane and the reaction was stirred at room temperature overnight. Monitoring of the reaction showed that the alcohol functionality had been partially deprotected under these conditions. After neutralization with aqueous NaHCO3 after 48 hours, the crude product was extracted in ethyl acetate. The residue was then dissolved in 2 mL of MeOH and the solution was treated with 0.5 mL of aqueous saturated K2CO3 solution. After 2 hours at room temperature, deprotection was complete. The reaction mixture was neutralized and the crude product extracted with ethyl acetate and purified by preparative HPLC (0.036 g, 35% yield over 3 steps): 1H NMR (CD3OD) δ 8.74, 8.55 (s, 1H), 8.22 (br s, 1H), 8.10 (br s, 2H), 7.78 (dt, 2H), 7.68 (br s, 1H), 7.58 (d, 2H), 7.51 (t, 1H), 7.382-7.30 (m, 3H), 5.21 (s, 1H); ES-MS (m/z) 411 [M+H]+.

Provenance & Evidence