Synthesis and in vitro characterization of novel fluorinated derivatives of the TSPO 18 kDa ligand SSR180575
摘要:
SSR180575 (1) is a high-affinity (0.83 nM) TSPO 18 kDa ligand belonging to the pyridazino[4,5-b]indole-1-acetamides family. Herein we describe the synthesis and in vitro characterization of two series of new fluorinated analogues. Eleven compounds (out of fifteen) displayed nanomolar to subnamolar affinities (0.30-8.1 nM) and high selectivities (Ki(CBR)/Ki(TSPO) > 10(3)). Two derivatives stand out as promising candidates for drug development or use as PET probes for in vivo neuroinflammation imaging, once fluorine-18-labelled. (C) 2015 Elsevier Masson SAS. All rights reserved.
Ring-closing metathesis reaction-based synthesis of new classes of polyether macrocyclic systems
作者:Naveen、Srinivasarao Arulananda Babu
DOI:10.1016/j.tet.2015.06.070
日期:2015.10
metathesis (RCM) reactions of suitable substrates having terminal olefins, which are assembled from various linkers and hydroxy benzaldehydes and syntheses of a wide range of 16–30 membered, new crown ether-type polyether, aza-polyether, bis aza-polyether macrocycles and dilactone moiety embedded polyethermacrocycles (macrolides) are reported. After the ring-closure reaction, installation of different functional
A wide range of palladiumcatalysed regio- and stereo-specific 5-, 6- and 7-exo-dig mono-, bis- and tris-cyclisation processes of aryl and vinyl halides and allylic acetates are described. The mono- and bis-cyclisation processes terminate in hydride capture from piperidineformic acid or sodium formate. Addition of Tl2CO3 results in alkyne-allene isomerisation and leads, after cyclisation, to 1,3-dienes
描述了广泛的钯催化的芳基和乙烯基卤化物和烯丙基乙酸酯的区域特异性和立体特异性的5-,6-和7-exo-dig单,双和三环化方法。单环和双环化过程终止于从哌啶甲酸或甲酸钠中捕获氢化物。Tl 2 CO 3的添加导致炔-丙二烯异构化,并且在环化之后导致1,3-二烯,这使Diels-Alder加合物具有良好的收率。
Functionalized and Degradable Polyphthalaldehyde Derivatives
作者:J. Patrick Lutz、Oleg Davydovich、Matthew D. Hannigan、Jeffrey S. Moore、Paul M. Zimmerman、Anne J. McNeil
DOI:10.1021/jacs.9b07508
日期:2019.9.18
polyphthalaldehyde derivatives has not been systematically studied. Herein, we investigate the cationic polymerization of seven o-phthalaldehyde derivatives and demonstrate that judicious choice of substituent results in materials with a wide range of ceiling temperatures (<-60 to 106 °C) and decomposition temperatures (109-196 °C). We anticipate that these new polymers and their derivatives will enable researchers
Strained alkynes derived from 2,2′-dihydroxy-1,1′-biaryls; synthesis and copper-free cycloaddition with azides
作者:Alessandro Del Grosso、Lavrentis-Dimitrios Galanopoulos、Cookson K. C. Chiu、Guy J. Clarkson、Peter B. O′ Connor、Martin Wills
DOI:10.1039/c7ob00991g
日期:——
A series of strained alkynes were prepared from 2,2′-dihydroxy-biaryls. Several were characterised by X-ray crystallography, revealing strained C(sp)–C(sp)–C(sp3) bond angles in the range of 163–167°. Their cycloadditions with azides proceed without a catalyst. Functionalised versions of these reagents have potential applications to materials synthesis and bioconjugations.
Synthesis and cycloaddition reactions of strained alkynes derived from 2,2′-dihydroxy-1,1′-biaryls
作者:Anish Mistry、Richard C. Knighton、Sam Forshaw、Zakaria Dualeh、Jeremy S. Parker、Martin Wills
DOI:10.1039/c8ob01768a
日期:——
A series of strained alkynes, based on the 2,2′-dihydroxy-1,1′-biaryl structure, were prepared in a short sequence from readily-available starting materials. These compounds can be readily converted into further derivatives including examples containing fluorescent groups with potential for use as labelling reagents. The alkynes are able to react in cycloadditions with a range of azides without the