Design and Synthesis of 6-Chloro-3,4-dihydro-4-methyl-2H-1,4-benzoxazine-8-carboxamide Derivatives as Potent Serotonin-3 (5-HT3) Receptor Antagonists.
作者:Takanobu KUROITA、Masamitsu SAKAMORI、Takeshi KAWAKITA
DOI:10.1248/cpb.44.756
日期:——
for serotonin-3 (5-HT3) receptor binding affinity. The 5-HT3 receptor antagonistic activity of zacopride, a representative 5-HT3 receptor antagonist, was unchanged by the replacement of the 4-amino substituent on the aromatic moiety by a 3-dimethyl-amino substituent. This finding prompted a structural modification of azasetron, another 5-HT3 receptor antagonist. Consequently, a new series of 3,4-dihydro-2H-1
合成了几种3-取代的5-氯-2-甲氧基苯甲酰胺,并评估了5-羟色胺3(5-HT3)受体的结合亲和力。代表性的5-HT 3受体拮抗剂扎科必利的5-HT 3受体拮抗活性通过用3-二甲基-氨基取代基取代芳族部分上的4-氨基取代基而没有改变。这一发现促使了另一种5-HT3受体拮抗剂azasetron的结构修饰。因此,获得了一系列新的3,4-二氢-2H-1,4-苯并恶嗪-8-羧酰胺,并且发现这些化合物比3,4-二氢-3-氧代-2H-1,4更有效。 -苯并恶嗪-8-羧酰胺。特别是,(S)-N-(1-氮杂双环[2.2.2]辛-3-基)-6-氯-3,4-二氢-4-甲基-2H-1,4-苯并恶嗪-8-羧酰胺对5-HT3受体具有高亲和力K(i)= 0。