1,3-DI-Boc-2-methylisothiourea → HCID 178503639, compound

Participants

Reaction Steps

1,3-Bis-t-butoxycarbonyl-2-methyl-2-thiopseudourea (0.033 g, 0.114 mmol) was added to a solution of [(4-{4′-amino-6′-methyl-2′-[3-(2-phenylamino-ethyl)-ureido]-biphenyl-3-sulfonyl}-5-methylsulfanyl-thiophen-2-yl)-imino-methyl]-carbamic acid tert-butyl ester [example 216, step a] in methanol [1 mL] and 1 drop of acetic acid. The reaction was stirred at room temperature for 1 hour and evaporated. The reaction was evaporated and column chromatography (25% EtOAc in hexanes) of the residue yielded the title compound (0.072 g, 68%) as a solid. ESI-MS (m/z): Calcd. for C44H56N8O9S3: 936.33; found: 936.9.

Provenance & Evidence