Diisopropylethylamine → HCID 57674029, compound

Participants

Reaction Steps

84 mg (0.22 mmol) HATU was added at RT under nitrogen to a solution of 100 mg (0.20 mmol) (R)-1-carboxy-2-(4-hydroxy-3-methoxy-5-methyl-phenyl)-ethyl 4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidine-1-carboxylate, 10 μL (0.64 mmol) ethyldiisopropylamine and 59 mg (0.24 mmol) 1-(tetrahydropyran-4-yl)-piperazine (used as the bis-hydrochloride salt) in 5 mL DMF and the mixture was stirred for 3 h. The reaction mixture was evaporated down i.vac. at 50° C. and the crude product was purified by HPLC-MS; the fractions containing the product were combined and lyophilised.

Provenance & Evidence