(2S)-2-[[(2S)-1-ethoxy-1-oxopentan-2-yl]amino]propanoic acid → HCID 53755056, compound

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Reaction Steps

Using the (DCC/HOBT) peptide coupling method described by W. KONIG and R. GEIGER (Ber, 103, 788, 1970) the expected product is prepared from 0.02 mol of (3S)-3-carbamoyl-2-azabicyclo[2.2.2]octane, described in Patent FR 2,585,709, and 0.02 mol of (S)-N-[(S)-1-(ethoxycarbonyl)butyl]alanine, described by VINCENT et al (Tetrahedron Letters 23, (1982), 1677-1680), the product being purified by chromatography on silica gel (elution solvent: dichloromethane/ethanol, 90:10) and then lyophilized.

Provenance & Evidence