Synthetic Routes to 4-Amino-3-carboxy-.beta.-carboline Derivatives: Incidental Formation of Novel Furo[3,4-c]-.beta.-carbolin-2-ones Displaying High Affinities for the Benzodiazepine Receptor
作者:Gilbert Dorey、Laurent Dubois、Lia Prdo Prado de Carvalho、Pierre Potier、Robert H. Dodd
DOI:10.1021/jm00001a024
日期:1995.1
26,33) generally displayed good affinities for the central type benzodiazepine receptor in vitro (IC50's in the 10-50 nM range), one compound, 29, demonstrated an exceptionally high binding affinity (IC50 = 0.2 nM). Compound 29 was shown in electrophysiological and behavioral studies to act as a benzodiazepine receptor antagonist. The unusually high binding affinity of compound 29 corroborates the
描述了第一4-氨基-3-羧基-β-咔啉衍生物(35)的合成。该合成基于4-乙烯基-β-咔啉-3-羧酰胺17的臭氧分解,以产生4-醛20和高锰酸钾将后者氧化成4-羧酸34,然后进行DPPA-促进的库尔修斯重排。在这些转化过程中,形成了许多在C-10位取代基不同的呋喃[3,4-c] -beta-carbolin-2-ones。尽管这些β-咔啉内酯(15,25,26,33)通常在体外对中型苯二氮杂receptor受体表现出良好的亲和力(IC50在10-50 nM范围内),但一种化合物29显示出极高的结合亲和力( IC50 = 0.2 nM)。在电生理和行为研究中显示化合物29可作为苯并二氮杂receptor受体拮抗剂。化合物29异常高的结合亲和力证实了以下假设:苯并二氮杂receptor受体优先识别s-顺式构型的3-羧基-β-咔啉的C-3羰基功能(即与吡啶基在同一侧的羰基氧氮)。