Importance of the aromatic ring in adrenergic amines. 6. Nonaromatic analogs of phenylethanolamine as inhibitors of phenylethanolamine N-methyltransferase: role of .pi.-electronic and steric interactions
作者:Dwight P. Davis、Ronald T. Borchardt、Gary L. Grunewald
DOI:10.1021/jm00133a004
日期:1981.1
the importance of pi-electronic and steric interactions of nonaromatic analogues of phenylethanolamine as inhibitors of phenylethanolamine N-methyltransferase (PNMT), a series of norbornane and norbornene ethanolamines was prepared and evaluated as inhibitors of PNMT (liquid chromatographic-electrochemical detector assay). Previous studies indicated a major importance of hydrophobic interaction of the
为了探讨苯基乙醇胺的非芳香族类似物作为苯基乙醇胺N-甲基转移酶(PNMT)抑制剂的π电子和空间相互作用的重要性,制备了一系列降冰片烷和降冰片烯乙醇胺,并作为PNMT的抑制剂进行了评估(液相色谱-电化学检测器测定) 。先前的研究表明,与乙醇胺侧链相连的环部分之间进行疏水相互作用的重要意义,但类似物之间的构象差异可能掩盖了pi-复合物形成的重要性。在这项研究中,降冰片烷和降冰片烯在1,2-exo和2-endo位置被乙醇胺侧链取代,是由相应的醛通过添加三甲基甲硅烷基氰化物(Me3SiCN)和氢化铝锂还原制备的。饱和(降冰片烷)类似物作为酶的抑制剂的效能是降冰片烯类似物的两倍,因此表明pi络合物的形成对结合没有重要的作用,并且如前所述,疏水相互作用是显着的结合相互作用环部分的 疏水结合区域的临界尺寸要求疏水部分具有足够的长度(桥头取代的降冰片烷和降冰片烯乙醇胺对于最佳结合而言太“短”了)。乙醇胺侧