Tetrahydrofuran → methyl 6-[3-methyl-2-[3-[5-[N-[(2-methylpropan-2-yl)oxycarbonyl]carbamimidoyl]-2-methylsulfanylthiophen-3-yl]sulfonylphenyl]anilino]-6-oxohexanoate

Participants

Reaction Steps

{[4-(2′-Amino-6′-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester (100 mg, 0.19 mmol, Example 25: step c) was dissolved into THF (3 mL). To this was added 5-Chlorocarbonyl-pentanoic acid methyl ester (41.5 mg, 0.23 mmol) and the reaction was stirred at RT for 2 hours. The reaction was dissolved into EtOAc and washed with brine. The combined organic layers were dried (MgSO4) followed by removal of solvents in vacuo resulted in the title compound that was used without further purification. ESI-MS (m/z): Calcd. for C31H37N3O7S3: 660.2 (M+1); found: 660.8.

Provenance & Evidence