The influence of molecular structure and crystallization time on the efficiency of diastereoisomeric salt forming resolutions
摘要:
Reciprocal resolutions between compounds (racemates and enantiomers) with similar structures have been examined. Amongst structurally similar compounds (so called relative structures) several N-acyl amino acids and amino acid esters were investigated. A part of the resolving agent or the racemic compound could be replaced by an achiral compound with a relative structure and an additive could occasionally improve significantly the efficiency of the resolution. Both the kinetic and the thermodynamic controls were observed as governing factors of the reciprocal resolutions. (C) 2010 Elsevier Ltd. All rights reserved.
The invention relates to compounds of formula (I) wherein R1, R2, R4, Ra, Rb, Rc, Re, A*, W1, W2 and W3 are as defined in claim 1, for the treatment of CXCR3 related diseases.
The influence of molecular structure and crystallization time on the efficiency of diastereoisomeric salt forming resolutions
Reciprocal resolutions between compounds (racemates and enantiomers) with similar structures have been examined. Amongst structurally similar compounds (so called relative structures) several N-acyl amino acids and amino acid esters were investigated. A part of the resolving agent or the racemic compound could be replaced by an achiral compound with a relative structure and an additive could occasionally improve significantly the efficiency of the resolution. Both the kinetic and the thermodynamic controls were observed as governing factors of the reciprocal resolutions. (C) 2010 Elsevier Ltd. All rights reserved.