Syntheses of 3-acetoacetylaminobenzo[b]furan derivatives having cysteinyl leukotriene 2 receptor antagonistic activity
作者:Kumiko Ando、Eriko Tsuji、Yuko Ando、Noriko Kuwata、Jun-ichi Kunitomo、Masayuki Yamashita、Shunsaku Ohta、Shigekatsu Kohno、Yoshitaka Ohishi
DOI:10.1039/b312682j
日期:——
Novel 3-acetoacetylaminobenzo[b]furan derivatives having a modified triene system at the 3-position were synthesized starting with 3-aminobenzo[b]furans. The enol isomers, 3-[(3-hydroxybut-2-enonyl)amino]benzo[b]furans (), of the 3-acetoacetylaminobenzo[b]furans were obtained as stable isomers owing to formation of a hydrogen bonding between the enol hydroxyl group and the amidocarbonyl group. The
从3-氨基苯并[b]呋喃开始,合成了在3-位具有修饰的三烯系统的新型3-乙酰乙酰氨基苯并[b]呋喃衍生物。由于3-烯丙基乙酰氨基苯并[b]呋喃之间形成氢键,因此作为稳定异构体获得了3-乙酰基乙酰氨基苯并[b]呋喃的烯醇异构体3-[(3-羟基丁-2-烯丙基)氨基]苯并[b]呋喃。羟基和酰胺羰基。通过C-3侧链的C-2取代基的平面性表明烯醇化合物中存在改性的共轭三烯系统。评估了半胱氨酸白三烯1和2受体对这些化合物的拮抗活性。2-(4-氰基苯甲酰基或乙氧基羰基)-3-[(2-氰基-3-羟基丁-2-烯丙基)氨基]苯并[b]呋喃(,)具有中等活性。