Hydrochloric Acid → HCID 178522587, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of trans-4-[[(phenylsulfonyl)amino]methyl]-N-(cis-3a,4,5,9b-tetrahydro-7-methoxy-1H-benz[e]indol-2-yl)cyclohexanecarboxamide (7) (0.200 g, 0.403 mmol) in dichloromethane (2 mL) was added dropwise with stirring, to a solution of boron tribromide (1.6 mmol) in dichloromethane (12 mL) at 0° C. The resultant suspension was stirred at 0° C. for 30 min. Methanol (˜1 mL) was added at which point the mixture became a clear yellow solution. The solution was stirred for 30 min at 0° C. The solvents were evaporated in vacuo, and the residue was purified by preparative HPLC on C18 reverse phase column, using water/acetonitrile/trifluoroacetic acid (50:50:0.1) as the eluent. The product obtained was dissolved in a minimum amount of methanol and converted to the hydrochloride salt by treatment with ethanolic hydrogen chloride. The solvents were evaporated in vacuo and the residue was triturated with diethyl ether to give trans-4-[[(phenylsulfonyl)amino]methyl]-N-(cis-3a,4,5,9b-tetrahydro-7-hydroxy-1H-benz[e]indol-2-yl)cyclohexanecarboxamide (9) as a beige solid (0.093 g, 45%). NMR (DMSO-d6): δ 0.77-0.95 (m, 2 H), 1.20-1.37 (m, 3 H), 1.64-1.80 (m, 2 H), 1.83-1.98 (m, 3 H), 2.43-2.64 (m, 5 H), 2.91 (d of d, 1 H), 3.48-3.74 (m, 4 H), 4.37-4.47 (m, 1 H), 6.54 (d, 1 H), 6.65 (d of d, 1 H), 7.03 (d, 1 H), 7.53-7.83 (m, 6 H), 9.37 (br s, 1 H), 11.56 (br s, 1 H), 13.22 (br s, 1 H); MS 482 (M+H)+ (Example 3).

Provenance & Evidence