Halina Hajmowicz

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The title compound, C(18)H(17)NO(6) [systematic name: (2R,3R)-4-benzyl-amino-2-benzo-yloxy-3-hy-droxy-4-oxobutanoic acid], is the first structurally characterized unsymmetrical monoamide-monoacyl tartaric acid derivative. The mol-ecule shows a staggered conformation around the tartramide Csp(3)-Csp(3) bond with trans-oriented carboxyl and amide groups. The(More)
The asymmetric unit of the alpha polymorph of (+)-N-tosyl-L-glutamic acid, C12H15NO6S, contains two independent molecules which differ in conformation. The carboxylic acid groups form an infinite zigzag chain with characteristic R(2)(2)(8) rings running along the b axis. Intermolecular N-H...O and C-H...O contacts mediate the formation of a(More)
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