Design, synthesis and biological evaluation of dual-function inhibitors targeting NMDAR and HDAC for Alzheimer’s disease
摘要:
Histone deacetylases (HDACs) have been indicated important roles in neurodegenerative disorders including Alzheimer's disease (AD). Herein, a series of novel compounds that contain a memantine moiety were designed to target HDACs and N-methyl-D-aspartate receptor (NMDAR) which are related to the treatment of AD. Biological characterization established that compound 9d exhibited a balanced inhibitory activity on NMDAR and HDACs. This compound is relatively selective to HDAC6 with IC50 of 0.18 mu M and also maintains comparable activity on NMDAR (K-i = 0.59 mu M) as memantine. Functionally, treatment with 9d increased the level of AcTubulin in MV4-11 cells and rescued PC-12 cells from H2O2-induced cytotoxicity with EC50 of 0.94 mu M. Studies in mice also demonstrated that compound 9d efficiently penetrates the blood brain barrier to reach the brain tissue. Collectively, the results strongly encourage further development of 9d as a potential therapeutic agent for AD.
<i>gem</i>-Difluorination of Methylenecyclopropanes (MCPs) Featuring a Wagner–Meerwein Rearrangement: Synthesis of 2-Arylsubstituted <i>gem</i>-Difluorocyclobutanes
作者:Peng-Peng Lin、Long-Ling Huang、Si-Xin Feng、Shuang Yang、Honggen Wang、Zhi-Shu Huang、Qingjiang Li
DOI:10.1021/acs.orglett.1c00767
日期:2021.4.16
The protocol proceeds via a Wagner–Meerwein rearrangement with mild reaction conditions, good functional group tolerance, and moderate to good yields. The product could be readily transformed to gem-difluorocyclobutane-containing carboxylic acid, amine, and alcohol, all of which are usefulbuildingblocks for biologically active molecule synthesis.