HCID 22036346, compound → HCID 22036240, compound

Participants

Reaction Steps

The product obtained in Step 1 above was dissolved in a mixture of EtOAc (18 mL) and ether (9 mL) and 5 M HCl/ether (9 mL) was added. The mixture was stirred at room temperature for 3 h. The precipitatated hydrochloride salt was filtered off and washed thoroughly with ether. The hydrochloride was dissolved in EtOAc/MeOH/Et3N (100:40:5) and purified by column chromatography on silica using NH3-satd. EtOAc/CH3OH (100:15) as eluent. The combined pure fractions were concentrated in vacuo and the resulting oil was dried (˜0.8 torr, room temperature) to give 0.36 g (69%) of the title product. HRMS m/z calcd for C19H26N4O4 (M)+ 374.1954, found 374.1947.

Provenance & Evidence