Crystal structure and conformation of N-(t-butoxycarbonyl)-L-isoleucyl-L-alanine benzylester |
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| Authors: | N Sukumar M N Ponnuswamy R Jayakumar |
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| Institution: | (1) Department of Crystallography and Biophysics, University of Madras, Guindy campus, 600 025 Madras, India;(2) Chemical Laboratory, Central Leather Research Institute, 600 020 Adyar, Madras, India |
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| Abstract: | C22N2O5H32,M
r
=404.5, monoclinic,C2,a=21.781(5),b=5.065(1),c=22.333(4)Å, =112.81(2)°,V=2271.1(9)Å3,D
calc=1.148 g cm3,  (CuK
 )=1.5418 Å, =5.89 cm–1,F(000)=848, room temperature,R=0.058 for 2178 unique reflections I 2.5 (I)]. The peptide linkage is in thetrans conformation. The molecule adopts the-sheet structure. The crystal structure is stabilized by a three-dimensional network of N-H O and C-HO hydrogen bonds.DCB Contribution No. 813. |
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| Keywords: | |
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