Synthesis and Structure−Activity Relationships of Amide and Hydrazide Analogues of the Cannabinoid CB<sub>1</sub> Receptor Antagonist <i>N</i>-(Piperidinyl)- 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1<i>H</i>-pyrazole-3-carboxamide (SR141716)
作者:Ma. Elena Y. Francisco、Herbert H. Seltzman、Anne F. Gilliam、René A. Mitchell、Sharyl L. Rider、Roger G. Pertwee、Lesley A. Stevenson、Brian F. Thomas
DOI:10.1021/jm010498v
日期:2002.6.1
(SAR) of the aminopiperidine region. The structural modifications include the substitution of alkyl hydrazines, amines, and hydroxyalkylamines of varying lengths for the aminopiperidinyl moiety. Proximity and steric requirements at the aminopiperidine region were probed by the synthesis of analogues that substitute alkyl hydrazines of increasing chain length and branching. The corresponding amide analogues
合成了联芳基吡唑N-(哌啶基)-5-(4-氯苯基)-1-(2,4-二氯苯基)-4-甲基-1H-吡唑-3-甲酰胺(SR141716; 5)的类似物以研究氨基哌啶区的构效关系(SAR)。结构修饰包括用不同长度的烷基肼,胺和羟烷基胺取代氨基哌啶基部分。通过取代链长和支链增加的烷基肼的类似物的合成,探讨了氨基哌啶区域的邻近性和空间要求。将相应的酰胺类似物与酰肼进行比较,以确定第二种氮对受体结合亲和力的影响。N-环己基酰胺14代表直接亚甲基,用于氮取代5,降低了杂原子相互作用的可能性,而吗啉代类似物15增加了额外杂原子相互作用的可能性。合成了一系列链长增加的羟烷基酰胺,以研究其他受体氢结合位点的存在。在使用大麻素激动剂[(3)H](1R,3R,4R)-3- [2-羟基-4-(1,1-二甲基庚基)苯基] -4-(3-羟丙基)环己-1的置换分析中-ol(CP 55 940; 2)或拮抗剂[(3)H] 5