An optically active form of mepenzolate bromide is provided. An agent for ameliorating chronic obstructive pulmonary disease that contains the optically active form as an active ingredient and is based on a bronchodilator effect and an anti-inflammatory effect is also provided. (3R)- or (3S)-3-[(hydroxy)(diphenyl)acetoxy]-1,1-dimethylpiperidinium bromide (hereinafter referred to as “(R)- or (S)-mepenzolate bromide”) is provided. An agent for ameliorating chronic obstructive pulmonary disease that contains the (R)- or (S)-mepenzolate bromide as an active ingredient is provided. Furthermore, an agent for ameliorating chronic obstructive pulmonary disease whose mode of administration is airway administration or inhalation administration is provided.
提供了一种旋光性的
溴化美普托仑。还提供了一种以支气管扩张剂作用和抗炎作用为基础,含有该旋光性形式作为活性成分的改善慢性阻塞性肺病的药剂。提供了(3R)-或(3S)-3-[(羟基)(二苯基)乙氧基]-
1,1-二甲基哌啶溴化物(以下简称为“(R)-或(S)-美普托隆
溴化物”)。提供了一种含有(R)-或(S)-美普托隆
溴化物作为活性成分的改善慢性阻塞性肺病的药剂。此外,还提供了一种以气道给药或吸入给药为给药方式的改善慢性阻塞性肺病的药剂。