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.

罗罗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麦构。罗罗的非麦构可以说明其多巴胺D2受体有较高的合力。