Tert-butyl N-{2-[N-(N,N′-dicyclohexylureidocarbonylethyl)carbamoyl]prop-2-yl}carbamate

Abstract

The title compound, C₂₅H₄₄N₄O₅, exhibits a turn with the main chain reversing direction, held together by an intramolecular N-H⋯O hydrogen bond. In the urea fragment, a notable amide C-N bond between the carboxyl C and the tertiary N atom shows marked single-bond character [1.437 (2) Å]. The dihedral angle of the β-alanyl residue, centrally located in the turn, is gauche [69.2 (2)°]. The packing is mediated by two intermolecular hydrogen bonds and van der Waals contacts involving the methyl moieties and the cyclohexyl rings.