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Three protected tetrapeptides

Fenude, Emma and Casalone, Gianluigi (1996) Three protected tetrapeptides. Acta Crystallographica Section C, Vol. 52 , p. 973-978. ISSN 0108-2701. Article.

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DOI: 10.1107/S0108270195013345


The structures of three protected tetrapeptides, containing the Boc-Gly-Gly-Phe-X-OMe chain, tert-butoxycarbonyl-glycy-glycl-phenylalanine-leucine methyl ester dihydrate, Boc-Gly-Gly-L-Phe-D-Leu-OMe, C25H38N4O7·2H2O, tert-butoxycarbonyl-glycy-glycl-phenylalanine-methionine methyl ester dihydrate, Boc-Gly Gly-L-Phe-D-Met-OMe, C24H36N4O7S.2H2O and tert-butoxycarbonyl-glycy-glycl-phenylalanine-norleucine methyl ester dihydrate, Boc-Gly-Gly-D-Phe-L-Nle-OMe, C25H38N4O7.2H2O, are described. The three molecules have the same conformation of the Boc-Gly Gly Phe-X-OMe tetrapeptide chain and display the same packing, consisting of couples of molecules linked head-to-tail by two hydrogen (N-HO) bonds; other hydrogen bonds, also involving two water molecules of crystallization, link these couples together, and give rise to a planar structure.

Item Type:Article
ID Code:1000
Uncontrolled Keywords:Crystal structure, molecular structure, tetrapeptides, opioid peptide, opiate receptor, organic compounds
Subjects:Area 03 - Scienze chimiche > CHIM/06 Chimica organica
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di chimica biomolecolare, Sassari
Publisher:International Union of Crystallography
Copyright Holders:© 1996 International Union of Crystallography
Publisher Policy:Depositato in conformità con la politica di copyright dell'Editore
Deposited On:18 Aug 2009 10:03

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