Enzymatic and solid-phase synthesis of new donepezil-based L- and d-glutamic acid derivatives and their pharmacological evaluation in models related to Alzheimer's disease and cerebral ischemia
作者:Leticia Monjas、Mariana P. Arce、Rafael León、Javier Egea、Concepción Pérez、Mercedes Villarroya、Manuela G. López、Carmen Gil、Santiago Conde、María Isabel Rodríguez-Franco
DOI:10.1016/j.ejmech.2017.02.034
日期:2017.4
Glu enantiomer and the nature of the lipase. An efficient solid-phase route has been used to produce new donepezil-based L- and D-Glu derivatives, resulting in good yield. At micromolar concentrations, the new compounds inhibited human cholinesterases and protected neurons against toxic insults related to Alzheimer's disease and cerebral ischemia. The CNS-permeable compounds N-Cbz-L-Glu(OEt)-[NH-2-(
以前,我们已经将N-Bz-L-Glu [NH-2-(1-苄基哌啶-4-基)乙基] -O-nHex(IQM9.21,L-1)描述为一种有趣的多功能神经保护化合物,神经退行性疾病的治疗。在这里,我们描述了新的衍生物和不同的合成路线,例如化学酶法和固相合成,旨在改善溶液中的上述路线。使用南极假丝酵母和Mucor miehei脂肪酶研究了脂肪酶催化的N-苄基-4-(2-氨基乙基)哌啶与L-和D-Glu二酯的酰胺化反应。在所有情况下,均以α-酰胺化的化合物为主要产物,指出区域选择性与反应的Glu对映异构体和脂肪酶的性质无关。一种有效的固相途径已用于生产新的基于多奈哌齐的L-和D-Glu衍生物,产生良好的产量。在微摩尔浓度下,新化合物抑制人胆碱酯酶并保护神经元免受与阿尔茨海默氏病和脑缺血相关的毒性伤害。可渗透CNS的化合物N-Cbz-L-Glu(OEt)-[NH-2-(1-苄基哌啶-4-基)乙基](L