Trifluoroacetic acid → 2-{5-Acetylamino-2-[4-acetylamino-2-(1-carboxy-3-methyl-butylcarbamoyl)-phenyldisulfanyl]-benzoylamino}-4-methyl-pentanoic acid

Participants

Reaction Steps

This compound was prepared according to the procedure described in Example 50 using [S-(R*,R*)] 2-{5-acetylamino-2-[4-acetylamino-2-(1-tert-butoxycarbonyl-3-methyl-butylcarbamoyl)-phenyldisulfanyl]-benzoylamino}-4-methyl-pentanoic acid tert-butyl ester (0.2 g, 0.2 mmol) from Example 44, 10 mL dichloromethane, and 10 mL trifluoroacetic acid. The crude product was recrystallized from dimethylformamide/water to afford 0.1 g of the title compound, mp 241°-242° C.

Provenance & Evidence