Synthesis, configuration, and evaluation of two conformationally restrained analogs of phencyclidine
作者:Brian R. De Costa、Clifford George、Terrence R. Burke、Michael F. Rafferty、Patricia C. Contreras、Stephen J. Mick、Arthur E. Jacobson、Kenner C. Rice
DOI:10.1021/jm00403a014
日期:1988.8
Separation of the mixture of amines by column chromatography followed by cyclization of each by heating at 60 degrees C in DMF solution with 1 equiv of 1,5-dibromopentane furnished the two conformationally restrained analogues of phencyclidine (PCP), cis- and trans-3-phenyl-3-piperidinylbicyclo[3.1.0]hexane (1 and 2, respectively), in high yield. Configurations were assigned on the basis of an X-ray crystallographic
顺式-双环[3.1.0]己-3-醇的棕色氧化反应以98%的收率得到双环[3.1.0]己-3-醇。在室温下用苯基锂或苯基溴化铵在乙醚中处理该酮,然后将所得醇在三氟乙酸,叠氮化钠和氯仿的混合物中溶剂化,得到顺式和反式3-叠氮基-3-苯基双环的混合物[3.1.0]己烷。用LAH还原该叠氮化物的粗混合物,分别得到顺式和反式-3-苯基-3-双环[3.1.0]己胺的1:3.5混合物,从该醇的总收率为51%。通过柱色谱分离胺混合物,然后通过在60°C的DMF溶液中加热1个当量的1,5-二溴戊烷,将每一种胺环化,从而得到苯环利定(PCP)的两个构象受限的类似物,高收率的顺式和反式-3-苯基-3-哌啶基双环[3.1.0]己烷(分别为1和2)。根据对顺式异构体(1)的X射线晶体学分析确定构型。键的长度和角度与PCP及其衍生物中的键长度和角度相似。相对于PCP,确定了与PCP受体和sigma位点的结合以及1和2