如果你是老年人，这些被称之为抗胆碱能类的药物会使你大脑模糊，记忆减退。
If you're elderly, these drugs, called anticholinergics, can cause mental fogginess and forgetfulness.
羟基-9-呫吨羧酸甲酯是合成呫吨类抗胆碱能药物的一种重要的中间体。
Methyl 9-hydroxyl-9-xanthene carboxyate which is an important intermediate of xanthene anticholiergic drugs was easily synthesized from methyl 9-xanthene carboxyate.
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