(+)-noroxymorphone gave us a potent TLR4 antagonist. The most promising analog, (+)-N-phenethylnoroxymorphone ((4S,4aR,7aS,12bR)-4a,9-dihydroxy-3-phenethyl-2,3,4,4a,5,6-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7(7aH)-one, 1j) showed ∼75 times better TLR-4 antagonist activity than (+)-naltrexone, and the ratio of its cell viability IC50, a measure of its toxicity, to TLR-4 antagonist activity (140 μM/1.4
Toll样受体的激活与神经性疼痛和阿片类药物依赖性有关。(+)-
纳曲酮可作为Toll样受体4(TLR4)拮抗剂,在大鼠研究中已显示可逆转神经性疼痛。我们设计和合成基于(+)-
纳曲酮和(+)-
去甲吗啡酮的化合物,并通过抑制小胶质BV-2细胞中脂
多糖(LPS)诱导的TLR4下游
一氧化氮(NO)产生的作用来评估其TLR4拮抗剂活性。(+)-去甲羟
吗啡酮中N取代基的改变为我们提供了一种有效的TLR4拮抗剂。最有前途的类似物,(+)- N- phenethylnoroxymorphone((4 S,4a R,7a S,12b R)-4a,9-dihydroxy-3-phenethyl-2,
3,4,4a,5,6-hexahydro -1高-4,12-甲氧基
苯并呋喃[3,2- e ]
异喹啉-7(7a H)-one,1j)的TLR-4拮抗剂活性是(+)-
纳曲酮的约75倍,并且其细胞存活率比50对TLR-4拮抗剂活性(140μM/