Efficient synthesis for optically pure stereogenically labile 4-substituted-2-hydroxytetronic acids

摘要

The present invention relates to a method for synthesis of optically pure stereogenically labile 4-substituted-2-hydroxytetronic acids from an asymmetric alpha -hydroxy ester. The chiron approach of the present invention utilizes a non-nucleophilic lithium amide base under kinetically controlled Clasien conditions to produce a 4-substituted-2-pheylmethoxy precursor to the 4-substituted-2-hydroxy tetronic acid. The invention further relates to the use of such optically pure compounds as potent inhibitors of platelet aggregation by working at the level of cyclooxygenase. The invention further relates to the pharmaceutical use of such compounds in the treatment of coronary artery diseases, especially in the treatment and/or prevention of atherosclerosis.