Dual inhibition of monoamine oxidase B and antagonism of the adenosine A2A receptor by (E,E)-8-(4-phenylbutadien-1-yl)caffeine analogues
作者:Judey Pretorius、Sarel F. Malan、Neal Castagnoli、Jacobus J. Bergh、Jacobus P. Petzer
DOI:10.1016/j.bmc.2008.07.088
日期:2008.9
The adenosine A(2A) receptor has emerged as an attractive target for the treatment of Parkinson's disease (PD). Evidence suggests that antagonists of the A(2A) receptor (A(2A) antagonists) may be neuroprotective and may help to alleviate the symptoms of PD. We have reported recently that several members of the (E)-8-styrylcaffeine class of A(2A) antagonists also are potent inhibitors of monoamine oxidase
Design, synthesis and antibacterial activity against pathogenic mycobacteria of conjugated hydroxamic acids, hydrazides and O-alkyl/O-acyl protected hydroxamic derivatives
their toxicity towards murine macrophages by the resazurin microtiter assay (REMA). Among the 45 derivatives, 17 compounds (3 hydroxamicacids, 9 hydrazides, and 5O-alkyl/O-acyl protected hydroxamicacids) were nontoxic against murine macrophages. When tested for their antibacterial activity, hydroxamicacid 9 h was found to be the most potent inhibitor against M. abscessus S and R only. Regarding hydrazide
以发现新的抗结核分子为目的,合成了三个新系列的 23 异羟肟酸、13 酰肼和 9O-烷基/O-酰基保护异羟肟酸衍生物,并通过光谱1 H NMR、13 C NMR、HRMS对其进行了全面表征。 ) 分析。通过刃天青微量滴定法 (REMA) 进一步对这些化合物进行了生物筛选,以了解它们对三种致病性分枝杆菌(脓肿分枝杆菌 S 和 R、海分枝杆菌和结核分枝杆菌)的体外抗菌活性,以及它们对小鼠巨噬细胞的毒性。 . 在 45 种衍生物中,17 种化合物(3 种异羟肟酸、9 种酰肼和 5O-烷基/O-酰基保护的异羟肟酸)对小鼠巨噬细胞无毒。当测试它们的抗菌活性时,异羟肟酸发现9 小时仅对脓肿分枝杆菌 S 和 R 是最有效的抑制剂。酰肼系列对脓肿分枝杆菌R、海分枝杆菌和结核分枝杆菌的活性仅7h ;而 O- 酰基保护的异羟肟酸衍生物14d和15d对 M. marinum 和 M. tuberculosis