title: N-{N-[N-(1,1-Dimethyl-ethoxy-carbon-yl)-l-leuc-yl]-N-methyl-l-leuc-yl}-N-methyl-l-leucine benzyl ester.
abstract: The tripeptide title compound, C(32)H(53)N(3)O(6), synthesized in 80% yield by coupling of N-methyl-l-leucine benzyl ester with tert-butoxy-carbonyl-l-leucyl-N-methyl-l-leucine at 273 K, conjugates through two amide linkages and includes two protecting groups: a tert-butyl-oxycarbonyl group at the C-tip and a benzyl group at the N-tip. A classical inter-molecular N-H⋯O hydrogen bond and a weak non-conventional inter-molecular C-H⋯O contact connect the mol-ecules, forming layers parallel to (001).
authors.forename: Wen Jie
authors.initials: WJ
authors.lastname: Xu
authors.forename: Xiao Jian
authors.initials: XJ
authors.lastname: Liao
authors.forename: Jian Zhong
authors.initials: JZ
authors.lastname: Diao
authors.forename: Lei
authors.initials: L
authors.lastname: Zhou
authors.forename: Shi Hai
authors.initials: SH
authors.lastname: Xu