Dicyclohexylcarbodiimide → HCID 69960398, compound

Participants

Reaction Steps

L-Phenylalanine hydrochloride (1.75 mmoles, 380 mg), diisopropylethylamine (1.93 mmoles, 0.34 ml), 2-[5-[2-(2H-tetrazol-5-yl)phenyl]-1H-benzimidazol-1-yl]octanoic acid (1.24 mmoles, 0.50 g), hydroxybenzotriazole (1.36 mmoles 184 mg) and dicyclohexylcarbodiimide (1.36 mmoles, 280 mg) were reacted as in Example 37. The stereoisomers were separated by chromatography over silica gel eluted with 2% methanol in chloroform. The isomers were hydrolyzed as in Example 37 to yield N-[1-oxo-2-[5-[2-(2H-tetrazole-5-yl]phenyl]-1H-benz imidazol-1-yl]octyl]-L-phenylalanine.

Provenance & Evidence