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 Claisen 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.
本发明涉及一种从不对称α-羟基酯合成光学纯的立体异构性不稳定的4-取代-2-羟基四
酮酸的方法。本发明的基本方法利用非亲核
锂胺碱在动力学控制的克莱森条件下产生4-取代-2-苯甲氧基前体,以制备4-取代-2-羟基四
酮酸。本发明还涉及将这些光学纯化合物用作强效的血小板聚集
抑制剂,通过在环氧合酶
水平上发挥作用。本发明还涉及这些化合物在治疗冠状动脉疾病,特别是在动脉粥样硬化的治疗和/或预防中的药物用途。