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(S)-Methyl 2-{(S)-2-[bis-(4-meth-oxy-phen-yl)methyl-idene-amino]-3-hy-droxy-propanamido}-3-methyl-butano-ate.

ABSTRACT: The title compound, C(24)H(30)N(2)O(6), a Schiff base, adopts an extended conformation in which the meth-oxy groups are essentially coplanar with the aromatic ring to which they are bonded (mean planes fitted through the non-H atoms of each methoxyphenyl group have r.m.s. deviations of 0.078 and 0.044?Å) and the angle between mean planes fitted through the aromatic rings is 87.57?(10)°. An intra-molecular N-H?N hydrogen bond keeps the imine and amide groups essentially coplanar. A mean plane fitted through these groups has an r.m.s. deviation of 0.0545?Å. Additional O-H?O hydrogen bonding parallel with the a axis links the mol-ecules into a hydrogen-bonded chain in the crystal. C-H?O and C-H?? inter-actions are found within the crystal packing. The compound has been assigned the S,S configuration on the basis of the chemical synthesis, which used pure homotopic l-amino acids, and we have no reason to believe that the compound has epimerized.

PROVIDER: S-EPMC3050411 | BioStudies | 2010-01-01T00:00:00Z

REPOSITORIES: biostudies

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