Ethanol → HCID 86585081, compound

Participants

Reaction Steps

A suspension of 700 mg (1.29 mmol) (2S,4R)-{[4-Acetylsulfanyl-1-(naphthalene-2-sulfonyl)-pyrrolidine-2-carbonyl]-phenethyl-amino}-acetic acid and 0.1 ml (1.68 mmol) EtOH in 12 ml CH2Cl2 was treated at 0° C. with 273 mg (1.42 mmol) EDCI and 16 mg (0.13 mmol) DMAP. After warming up to RT (1 h), the reaction was partitioned between aqueous 10% KHSO4/Et2O (3×). The organic phases were washed with aqueous saturated KHCO3, 10% NaCl and dried over Na2SO4. Purification by flash-chromatography on silicagel (Hexane/EtOAc 9:1 to 4:1) gave 0.254 mg (34%) (2S,4R)-{[4-Acetylsulfanyl-1-(naphthalene-2-sulfonyl)-pyrrolidine-2-carbonyl]-phenethyl-amino}-acetic acid ethyl ester, mp: 119-120° C., MS: 569 (MH+).

Provenance & Evidence