Ropinirole,a dopamine agonist,has similar effect of dopamine but without ergoline structure by which its stronger binding power with dopamine D2 receptor may be explained.

是一种类似多巴胺的多巴胺激动剂，第一代多巴胺激动剂不同的是没有结构。的非结构可以说明其多巴胺D2受体有较高的结合力。