4-Methylmorpholine → HCID 131721608, compound

Participants

Reaction Conditions

Reaction Steps

2 g (3.35 mmol) Z-Val-Val-MeVal-Pro-OH (SEQ ID NO: 2) and 0.692 g (3.35 mmol) H-Pro-NHC(CH3)3 were dissolved in 34 ml of dry dichloromethane. After cooling to 0° C., 1.35 ml (12.1 mmol) N-methylmorpholine, 0.114 g (0.84 mmol) HOBt and 0.645 g (3.35 mmol) EDCI were added and the reaction mixture stirred overnight at room temperature. 80 ml dichloromethane were added and the organic phase thoroughly washed with saturated aqueous NaHCO3 solution (3×), water (1×), 5% citric acid (3×) and saturated NaCl solution (1×). The organic phase was dried over sodium sulfate and evaporated to dryness to yield 1.8 g of the product which was used in the next reaction without further purification.

Provenance & Evidence