[EN] PENICILLIN-BINDING PROTEIN INHIBITORS<br/>[FR] INHIBITEURS DE PROTÉINE DE LIAISON À LA PÉNICILLINE
申请人:VENATORX PHARMACEUTICALS INC
公开号:WO2021108023A1
公开(公告)日:2021-06-03
Described herein are certain boron-containing compounds, compositions, preparations and their use as modulators of the transpeptidase function of bacterial penicillin-binding proteins and as antibacterial agents. In some embodiments, the compounds described herein inhibit penicillin-binding proteins. In certain embodiments, the compounds described herein are useful in the treatment of bacterial infections.
The detection of subcellular domains in cells can be obtained by specific fluorescent markers. Here we report the use of styryl quinolinium dyes that selectively stain ribosomal RNA (rRNA) in nucleoli and in the cytoplasm of mammalian cells. Specifically, we synthesized a series of 1-methyl-4-(substituted) styryl-quinolinium derivatives, 12a–l. We developed highly efficient microwave-assisted synthesis
细胞中亚细胞结构域的检测可以通过特定的荧光标记获得。在这里,我们报告使用苯乙烯基喹啉鎓染料选择性染色核仁和哺乳动物细胞质中的核糖体RNA(rRNA)。具体来说,我们合成了一系列1-甲基-4-(取代的)苯乙烯基-喹啉鎓衍生物12a - 1。我们开发了高效的微波辅助合成技术,可防止副产物的形成,从而使产物的收率超过90%。化合物12c-f和12i在各种溶剂中的最大吸收在500-660 nm处,摩尔消光系数为25400-49000 M -1 cm -1,并在630-715 nm处发射。染料类12a – l具有高度的光化学稳定性。染料12e特异性染色了核仁和细胞质,并且是无毒的。各种测试表明该染料对rRNA的亲和力明显更高。我们证明12e是一种吸引人的染色试剂,用于可视化和评估固定细胞和活细胞中的rRNA。
New reactions of polyfluoroaromatic compounds. Part II. Polyfluoroaralkyl amines
作者:William L. White、Robert Filler
DOI:10.1039/j39710002062
日期:——
The preparations of the pentafluoro-(1a) and 4-methoxy-2,3,5,6-tetrafluoro-(1b) analogues of (±)-amphetamine and of N-methyl-N-pentafluorobenzylprop-2-ynylamine (25) are outlined. The synthesis of salts of 1-methyl-2-pentafluorophenylethylhydrazine (10) and (12) and 2-pentafluorophenylcyclopropylamine (19) are described.
Structural analysis of 2-arylidene-1-indanone derivatives by electrospray ionization tandem mass spectrometry
作者:José C. J. M. D. S. Menezes、José A. S. Cavaleiro、M. Rosário M. Domingues
DOI:10.1002/rcm.6701
日期:2013.11.15
derivatives inspired from donepezil, the current drug used for the treatment of Alzheimer's disease as inhibitor of acetylcholinesterase (AChE), were studied for the first time by electrospray ionization massspectrometry (ESI-MS) and tandem massspectrometry (MS/MS). Structurally, these arylidene-indanone compounds are considered as cyclic analogues of chalcones. METHODS ESI-MS and tandem mass spectra were
RATIONALE首次研究了从多奈哌齐中获得启发的2-芳基-4-甲氧基(或羟基)-7-甲基-1-茚满酮衍生物,多奈哌齐是目前用于治疗阿尔茨海默氏病的乙酰胆碱酯酶(AChE)抑制剂。电喷雾电离质谱(ESI-MS)和串联质谱(MS / MS)。在结构上,这些亚芳基-茚满酮化合物被认为是查耳酮的环状类似物。方法使用Q-TOF 2仪器获取ESI-MS和串联质谱。使用标准的分离和激发程序,通过在Q-TOF和LXQ线性离子阱质谱仪中获得的CID-MS(2-3)光谱分析碎片模式。结果所有的2-亚芳基茚满酮均显示出共同的碎裂途径,导致了(2(1),1' )m / z 187处的A(+)产物离子和逆醛醇产物离子[(2,2(1))B(+)],可以在B环中建立取代。注意到给电子和吸电子取代基对这些断裂途径的影响。OCH3,OH,NO2和Br取代基的存在产生了典型的片段化过程,使它们具有明确的指纹。提出了在B环上
STYRYL QUINOLINIUM, PROCESS FOR THEIR PREPARATION AND USE THEREOF AS FLUORESCENT PROBES FOR IMAGING
申请人:BAR ILAN UNIVERSITY
公开号:US20220119349A1
公开(公告)日:2022-04-21
The present invention is directed to styryl quinolinium compounds, a process for their synthesis and their use for selective nucleoli staining in cells, preferably in living cells and for imaging rRNA.