(S)-(Z)-Methyl 2-[2,3-bis(benzyloxycarbonyl)guanidino]-4-methylpentanoate

Abstract

The title molecule, C24H29N3O6, has a nearly planar ten-atom C3N3O4 core, on account of both N—H groups forming six-membered-ring intramolecular hydrogen bonds to carbamate carbonyl O atoms. The absolute configuration was determined from resonant scattering of light atoms in Mo Kα radiation, agreeing with the configuration of starting materials.