Synthesis of diastereomeric 13-amido-substituted huprines as potential high affinity acetylcholinesterase inhibitors
作者:Pelayo Camps、Elena Gómez、Diego Muñoz-Torrero、Mercè Font-Bardia、Xavier Solans
DOI:10.1016/s0040-4020(03)00577-5
日期:2003.6
diastereomeric huprines additionally functionalized at position 13 with a methanesulfonamido group have been synthesized in seven steps from the known 9,9-ethylenedioxybicyclo[3.3.1]nonane-3,7-dione (5). In a key-step, nickel boride non-stereoselective reduction of an oxime gave a mixture of amines which was separated as methanesulfonamido derivatives. The substitution pattern of these huprines could lead
从七个已知的9,9-乙撑二氧双环[3.3.1]壬烷-3,7-二酮(5)中分七个步骤合成了两个在位置13处额外带有甲磺酰胺基官能团的非对映异构体up庚啶。在关键步骤中,肟化硼酸镍的非立体选择性还原,得到的胺混合物被分离为甲磺酰胺基衍生物。这些huprine的取代模式可能会导致在乙酰胆碱酯酶(AChE)活性位点附近的结合延长,从而导致改进的AChE抑制剂。