Triethylamine → (2S)-2-(2-(((Benzylcarbamoyl)amino)(prop-2-en-1-yl)amino)acetamido)-3-(4-(benzyloxy)-2-fluorophenyl)-N-(2,2-diethoxyethyl)-N-((6-fluoropyridin-2-yl)methyl)propanamide

Participants

Reaction Steps

To a mixed solution of (2S)-2-amino-3-(4-(benzyloxy)-2-fluorophenyl)-N-(2,2-diethoxyethyl)-N-((6-fluoropyridin-2-yl)methyl)propanamide (4.87 g, 9.48 mmol) described in Production Example 1-1-3 and dichloromethane (100 mL) were added a known substance (WO2009148192) 2-(((benzylcarbamoyl)amino)(prop-2-en-1-yl)amino)acetic acid (2.62 g, 9.95 mmol), triethylamine (2.64 mL, 19.0 mmol) and HBTU (3.96 g, 10.4 mmol) at room temperature. The resultant mixture was stirred at room temperature for 1 hour. The reaction mixture was concentrated under a reduced pressure, and the resultant residue was purified by NH silica gel column chromatography (ethyl acetate and then ethyl acetate:methanol=30:1) to give the title compound (7.28 g, yield: quantitative).

Provenance & Evidence