通过1,3-二羰基化合物与4-肼基苯磺酰胺的缩合反应,合成了一系列带有磺酰胺基团的新型N-芳基吡唑衍生物(4a-4l)。根据元素(碳,氢和氮)和光谱分析(1 H NMR,13 C NMR,ESIMS和FT-IR)建立所得化合物的结构。测试了这些化合物对三种人类肿瘤细胞系MCF-7,Hela和A549的体外细胞毒性活性。结果表明,大多数获得的化合物对IC 50值较低的被测细胞系均显示出有希望的细胞毒性。吡唑衍生物4k最有效的一种是在苯环的3位和4位带有两个甲氧基的化合物。它对MCF-7细胞的细胞生长抑制作用优于塞来昔布和顺铂。
fluorescence-switchable near-infrared (IR) dye based on merocyanine for target specific imaging. In contrast to the typical bathochromic shift approach by extending π-conjugation, the bathochromic shift of our merocyanine dye to the near-IR region is due to an unusual S- cis diene conformer. This is the first example where a fluorescent dye adopts the stable S- cis conformation. In addition to the novel
Diazepines. Part 25. Preparation and properties of 6-aryl-2,3-dihydro-1,4-diazepinium salts. Electronic interaction between the rings and steric inhibition thereof
作者:Douglas Lloyd、Kanwaljit S. Tucker、Donald R. Marshall
DOI:10.1039/p19810000726
日期:——
substitution in the 6-phenyl ring. Solution in deuteriosulphuric acid generates a stable radical species. Nucleophiles (monoamines, diamines, sodium hydroxide) attack the 5-and 7-positions of the diazepine ring. The 13C n.m.r. and mass spectra of these compounds are discussed.
已经制备了多种6-芳基二氢二氮杂吡啶鎓盐(还包括6-联苯基-4-基,6-α-萘基和6- N-吡啶基),主要是通过1,2-二胺与3-芳基-1的反应来制备的。 ,5-二氮杂戊二烯鎓盐。富电子的二氢二氮杂pin鎓阳离子活化6-芳基取代基,使其趋于亲电子攻击,并且卤化和硝化在对位发生。六元或七元环中靠近环结的取代基可能会阻止两个环的共面性,从而抑制这种反应性。这些药物取代的化合物的13 C nmr光谱也显示出环之间的电子相互作用降低。NN “和2,2-二苯基NN′-二苄基取代基也抑制6-苯环中的亲电取代。氘代硫酸溶液中产生稳定的自由基。亲核试剂(单胺,二胺,氢氧化钠)攻击二氮杂环的5位和7位。讨论了这些化合物的13 C nmr和质谱。
[EN] IMAGING AGENTS AND METHODS<br/>[FR] AGENTS ET PROCÉDÉS D'IMAGERIE
申请人:VS CHEMICKO TECHNOLOGICKA V PRAZE
公开号:WO2018206126A1
公开(公告)日:2018-11-15
The invention provides methods for imaging biological tissue. The disclosed polymethenium salts show activity as two photon imaging agents, having a greater imaging depth and photostability than known agents, whilst having lower toxicity. The methods show great selectivity for mitochondria. The methods have utility in both in vitro and in vivo imaging, for example, imaging of tumours.
Bi-functional complexes and methods for making and using such complexes
申请人:Gouliaev Alex Haahr
公开号:US11225655B2
公开(公告)日:2022-01-18
The present invention is directed to a method for the synthesis of a bi-functional complex comprising a molecule part and an identifier oligonucleotide part identifying the molecule part. A part of the synthesis method according to the present invention is preferably conducted in one or more organic solvents when a nascent bi-functional complex comprising an optionally protected tag or oligonucleotide identifier is linked to a solid support, and another part of the synthesis method is preferably conducted under conditions suitable for enzymatic addition of an oligonucleotide tag to a nascent bi-functional complex in solution.