Design, Synthesis, and Structure–Activity Relationship Studies of Highly Potent Novel Benzoxazinyl-Oxazolidinone Antibacterial Agents
作者:Qisheng Xin、Houxing Fan、Bin Guo、Huili He、Suo Gao、Hui Wang、Yanqin Huang、Yushe Yang
DOI:10.1021/jm200614t
日期:2011.11.10
A series of novel benzoxazinyl-oxazolidinones bearing nonaromatic heterocycle or aryl groups were designed and synthesized. Their in vitro and in vivo antibacterial activities were investigated. Most of the (3S, 3aS) biaryl benzoxazinyl-oxazolidinones exhibited potent activity against Gram-positive pathogens. SAR trends were observed; a pyridyl C ring was preferable to other 5- or 6-member aryl C rings
设计并合成了一系列带有非芳族杂环或芳基的新型苯并恶嗪基-恶唑烷酮。研究了它们的体外和体内抗菌活性。大多数(3 S,3a S)联芳基苯并恶嗪基-恶唑烷酮类均对革兰氏阳性病原体表现出有效的活性。观察到SAR趋势;吡啶基C环优于其他5或6元芳基C环,而在B环上的氟取代生成的活性降低。还评估了吡啶基环上的各种取代基位置。所得化合物显示出优异的抗利奈唑胺菌株的活性。化合物45表现出优异的体外活性,抗MRSA的MIC值为0.25–0.5μg/ mL,抗利奈唑胺抗性菌株的活性比利奈唑胺高8–16倍。在MRSA全身感染模型中,化合物45的ED 50小于5.0 mg / kg,效力比利奈唑胺高近3倍。该化合物还表现出出色的药代动力学特性,在大鼠中的半衰期超过5小时,口服生物利用度为81%。