New triterpenoid derivatives with various substituents at the C-17 position of 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid (CDDO) were synthesized. Among them, 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-onitrile (CNDDO), 1-(2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oyl) imidazole, 1-(2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oyl)-2-methylimidazole, 1-(2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oyl)-4-methylimidazole show extremely high inhibitory activity (IC
50
=0.01-1 pM level) against production of nitric oxide induced by interferon-&ggr; in mouse macrophages. These compounds can be used in the prevention or treatment of diseases such as cancer, Alzheimer's disease, Parkinson's disease, multiple sclerosis, rheumatoid arthritis, and other inflammatory diseases. All the new triterpenoid derivatives are more potent than previously known CDDO.
合成了在2-
氰基-3,12-二氧杂环-1,9(11)-二烯-28-
羧酸(
CDDO)的C-17位具有不同取代基的新三萜衍
生物。其中,2-
氰基-3,12-二氧杂环-1,9(11)-二烯-28-腈(CNDDO)、1-(2-
氰基-3,12-二氧杂环-1,9(11)-二烯-28-酰)
咪唑、1-(2-
氰基-3,12-二氧杂环-1,9(11)-二烯-28-酰)-
2-甲基咪唑、1-(2-
氰基-3,12-二氧杂环-1,9(11)-二烯-28-酰)-
4-甲基咪唑显示出极高的抑制活性(IC50=0.01-1 pM
水平),可以抑制由干扰素-γ诱导的小鼠巨噬细胞产生
一氧化氮。这些化合物可用于预防或治疗癌症、阿尔茨海默病、帕
金森病、多发性硬化症、类风湿性关节炎和其他炎症性疾病。所有新的三萜衍
生物比之前已知的
CDDO更具有活性。