Synthesis and benzodiazepine binding activity of a series of novel [1,2,4]triazolo[1,5-c]quinazolin-5(6H)-ones
作者:John E. Francis、William D. Cash、Beverly S. Barbaz、Patrick S. Bernard、Richard A. Lovell、Gerard C. Mazzenga、Robert C. Friedmann、James L. Hyun、Albert F. Braunwalder
DOI:10.1021/jm00105a044
日期:1991.1
Investigation of tricyclic heterocycles related to the 2-arylpyrazolo[4,3-c]quinolin-3(5H)-ones, structures with high affinity for the benzodiazepine (BZ) receptor, led to the synthesis of 2-phenyl-[1,2,4]triazolo[1,5-c]quinazolin-5(6H)-one, a compound with 4 nM binding affinity to the BZ receptor. Analogues were prepared to assess the importance of the 2-substituent and ring substitution in modifying
对与2-芳基吡唑并[4,3-c]喹啉-3(5H)-ones相关的三环杂环的研究,对苯二氮卓(BZ)受体具有高亲和力的结构导致了2-苯基-[1, 2,4] triazolo [1,5-c] quinazolin-5(6H)-one,一种对BZ受体具有4 nM结合亲和力的化合物。制备类似物以评估2-取代基和环取代在修饰活性中的重要性。设计了几种新颖的合成路线来制备目标化合物,包括从蒽腈和酰肼开始的两步合成。在该系列筛选的34种化合物中,在大鼠模型中发现3种化合物是有效的BZ拮抗剂。前导化合物9-氯-2-(2-氟苯基)[1,2,4]三唑并[1,5-c]喹唑啉-5(6H)-一(CGS 16228),