Methanol → HCID 178496600, compound

Participants

Reaction Conditions

Reaction Steps

5-(4,4-Dimethylcyclohexyl)-3-[(trans-4-methoxy-cyclohexyl)-(trans-4-methyl-cyclohexanecarbonyl)-amino]-thiophene-2-carboxylic acid methyl ester (890 mg, 1.76 mmol) was dissolved in a 3:2:1 mixture of THF:methanol:H2O (50 mL) and treated with a 1N solution of LiOH.H2O (5.29 mL, 5.29 mmol). After stirring for 2 h at 60° C., the reaction mixture was evaporated to dryness and suspended in water. The reaction mixture was acidified to pH 3. After extraction with EtOAc, the organic fraction was washed with water, dried over Na2SO4 and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel using CH2Cl2:MeOH (90:10) as eluent affording the 5-(4,4-dimethyl-cyclohexyl)-3-[(trans-4-methoxy-cyclohexyl)-(trans-4-methylcyclohexane-carbonyl)-amino]-thiophene-2-carboxylic acid (535 mg, 58%) as a solid.

Provenance & Evidence