西瓜子氨酸(cucurbitin)是人类认识的第一个天然存在的吡唑衍生物。

• 系统名：β-(N-吡唑基)-α-氨基丙酸

Cucurbitin is an amino acid and a carboxypyrrolidine that is found in Cucurbita seeds. Cucurbitin causes degenerative changes in the reproductive organs of parasitic flatworms called flukes.