The present invention provides an industrially valuable method for preparing an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound which is useful as a starting material for an optically active benzopyran compound with antihypertensive, coronary blood flow-increasing activities and the like, provides a diastereomeric ester compound which is useful as an intermediate for said epoxy compound and also provides a use of said diastereomeric ester compound in making of said epoxy compound, and further an optically active benzopyran compound which is useful as medicine.
本发明提供了一种具有工业价值的制备光学活性的3,4-二氢-3,4-环氧-2H-1-苯并
吡喃化合物的方法,该方法可用作具有抗高血压、增加冠状动脉血流量等活性的光学活性苯并
吡喃化合物的起始原料、提供了一种非对映异构酯化合物,该化合物可用作所述环氧化合物的中间体,还提供了所述非对映异构酯化合物在制造所述环氧化合物中的用途,以及进一步提供了一种光学活性苯并
吡喃化合物,该化合物可用作药物。