Azaspirene, a novel angiogenesis inhibitor, is based on the 1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione framework. Previous studies have shown that Azaspirene effectively inhibits VEGF-induced migration of human umbilical vein endothelial cells (HUVEC), demonstrating a potentially effective dosage. Moreover, azaspirene analogs may exhibit potential antitumor effects against uterine adenocarcinoma, possibly through significant anti-angiogenic activity.