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Structure of Boc-Phe-D-Leu-Thr-OMe
1Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Japan.
Summary
The crystal structure of tert-butoxycarbonyl-L-phenylalanyl-D-leucine-L-threonine methyl ester reveals an open conformation. Molecules self-assemble into infinite sheets via hydrogen bonds, showcasing unique molecular packing in the solid state.
Area of Science:
- Crystallography
- Structural Chemistry
- Molecular Biology
Background:
- Understanding the three-dimensional structure of peptide derivatives is crucial for drug design and materials science.
- The specific conformation and intermolecular interactions dictate the bulk properties of crystalline compounds.
Purpose of the Study:
- To elucidate the crystal structure of tert-butoxycarbonyl-L-phenylalanyl-D-leucine-L-threonine methyl ester.
- To investigate the molecular conformation and crystal packing of this peptide derivative.
Main Methods:
- X-ray crystal structure analysis was employed to determine the atomic arrangement.
- Analysis of hydrogen bonding and symmetry operations revealed the supramolecular assembly.
Main Results:
- The molecule adopts an open conformation, with the tert-butoxycarbonyl group positioned near the D-leucine side chain.
- A unique sheet structure is formed through twofold screw symmetry and four independent hydrogen bonds.
- The crystal packing is characterized by specific intermolecular interactions.
Conclusions:
- The determined crystal structure provides insights into the conformational preferences of this peptide ester.
- The observed hydrogen bonding network and symmetry-driven assembly highlight the principles of crystal engineering for peptide derivatives.