There are provided novel 3,4-dihydrobenzopyran derivatives having anti-peptic ulcer, antitussive and/or expectorant activity. Also provided are medicinal uses of said 3,4-dihydrobenzopyran derivatives.
提供了具有抗消化性溃疡、镇咳和/或祛痰活性的新型3,4-二氢苯并
吡喃衍
生物。还提供了上述3,4-二氢苯并
吡喃衍
生物的药用用途。