Synthesis of 4-(aminoalkyl) substituted 1,3-dioxanes as potent NMDA and σ receptor antagonists
作者:Tina Utech、Jens Köhler、Bernhard Wünsch
DOI:10.1016/j.ejmech.2011.02.070
日期:2011.6
LiAlH4 reduction. The highest NMDA receptor affinity was found for 1,3-dioxanes with a phenyl and an ethyl residue at the acetalic position (23) followed by diphenyl (22) and monophenyl derivatives (13). Generally the NMDA affinity of primary amines is higher than the NMDA affinity of secondary and tertiary amines. Altogether the primary amine 23a (Ki = 24 nM) represents the most promising NMDA receptor
氧杂环与NMDA受体拮抗剂右旋沙特罗和乙氧磷的氧杂环基团的碱性氨基部分之间的距离延长或氧杂环的环扩展导致具有希望的NMDA受体亲和力的化合物。在此,设想了两种结构特征的组合,即具有1,3-二恶烷环的O-杂环-胺距离的延长。氨基乙基-1,3-二恶烷的合成13,22,23和29是由各种缩醛transacetalization用戊烷-1,3,5-三醇,用甲苯磺酰氯和随后的亲核取代的剩余的游离OH基团的活化进行。相应的3-氨丙基衍生物33 – 35通过用KCN和LiAlH 4还原取代甲苯磺酸酯来制备。发现对于1,3-二恶烷具有最高的NMDA受体亲和力,在缩醛位置(23)具有苯基和乙基残基,其次是二苯基(22)和单苯基衍生物(13)。通常,伯胺的NMDA亲和力高于仲胺和叔胺的NMDA亲和力。共伯胺23A(ķ我 = 24 nm)表示这一系列超过单同系物(2-氨基乙基)-1,3-二氧戊环(的NMDA亲和