Synthesis and Structure−Activity Relationships of Chiral Allosteric Modifiers of Hemoglobin
摘要:
A series of allosteric effecters of hemoglobin, 2-(aryloxy)-2-alkanoic acids, was prepared to investigate the effect of the stereocenter on allosteric activity. The chiral analogues were based on the lead compound, RSR13 (3b), with different alkyl/alkanoic and cycloalkyl/cycloalkanoic groups positioned at the acidic chiral center. Of the 23 racemic molecules synthesized, 5 were selected for resolution based on structure-activity relationships. One chiral analogue, (-)( 1R,2R)-1-[4-[[(3,5 -dimethylanilino)carbonyl]methyl]phenoxy]-2-methylcyclopentanecarboxylic acid (11), exhibited greater in vitro activity in hemoglobin solutions than its antipode, racemate, and RSR13. Compound (-)-(LR,2R)-11 was equipotent with RSR13 in whole blood, is a candidate for in vivo animal studies, and if efficacious and safe has a potential for use in humans. In general, it was found that chirality affects allosteric effector activity with measurable differences observed between enantiomers and the racemates.
Synthesis and Structure−Activity Relationships of Chiral Allosteric Modifiers of Hemoglobin
摘要:
A series of allosteric effecters of hemoglobin, 2-(aryloxy)-2-alkanoic acids, was prepared to investigate the effect of the stereocenter on allosteric activity. The chiral analogues were based on the lead compound, RSR13 (3b), with different alkyl/alkanoic and cycloalkyl/cycloalkanoic groups positioned at the acidic chiral center. Of the 23 racemic molecules synthesized, 5 were selected for resolution based on structure-activity relationships. One chiral analogue, (-)( 1R,2R)-1-[4-[[(3,5 -dimethylanilino)carbonyl]methyl]phenoxy]-2-methylcyclopentanecarboxylic acid (11), exhibited greater in vitro activity in hemoglobin solutions than its antipode, racemate, and RSR13. Compound (-)-(LR,2R)-11 was equipotent with RSR13 in whole blood, is a candidate for in vivo animal studies, and if efficacious and safe has a potential for use in humans. In general, it was found that chirality affects allosteric effector activity with measurable differences observed between enantiomers and the racemates.
Synthesis and Structure−Activity Relationships of Chiral Allosteric Modifiers of Hemoglobin
作者:Melissa Phelps Grella、Richmond Danso-Danquah、Martin K. Safo、Gajanan S. Joshi、Jean Kister、Michael Marden、Stephen J. Hoffman、Donald J. Abraham
DOI:10.1021/jm000199q
日期:2000.12.1
A series of allosteric effecters of hemoglobin, 2-(aryloxy)-2-alkanoic acids, was prepared to investigate the effect of the stereocenter on allosteric activity. The chiral analogues were based on the lead compound, RSR13 (3b), with different alkyl/alkanoic and cycloalkyl/cycloalkanoic groups positioned at the acidic chiral center. Of the 23 racemic molecules synthesized, 5 were selected for resolution based on structure-activity relationships. One chiral analogue, (-)( 1R,2R)-1-[4-[[(3,5 -dimethylanilino)carbonyl]methyl]phenoxy]-2-methylcyclopentanecarboxylic acid (11), exhibited greater in vitro activity in hemoglobin solutions than its antipode, racemate, and RSR13. Compound (-)-(LR,2R)-11 was equipotent with RSR13 in whole blood, is a candidate for in vivo animal studies, and if efficacious and safe has a potential for use in humans. In general, it was found that chirality affects allosteric effector activity with measurable differences observed between enantiomers and the racemates.