G. Valle, M. Crisma, C. Toniolo
1993
Citations
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Journal
Zeitschrift für Kristallographie - Crystalline Materials
Abstract
Source of material: The title compound was prepared by the reaction of 2-para-bromophenyl-4,4-diphenyl-5(4H)-oxazolone with glycyl-glycine tert-butylester in acetonitrile. Crystallization from hot methanol. M.p.: 402 404 K. The diphenylglycine residue adopts a helical conformation. Among the nine crystal structures of diphenylglycine -containing linear derivatives and peptidesthis is the second example of helical conformation. In all other cases this residue takes the fully-extended (C5) conformation (see refs. 1 and 2).