Novel Selective and Partial Agonists of 5-HT3 Receptors. Part 1. Synthesis and Biological Evaluation of Piperazinopyrrolothienopyrazines
摘要:
A series of piperazinopyrrolo[1,2-a]thieno[3,2-e]- and -[2,3-e]pyrazine derivatives were prepared and evaluated in order to determine the necessary requirements for high affinity on the 5-HT3 receptors and high selectivity versus other 5-HT receptor subtypes. Various substitutions on the piperazine and the thiophene ring of the pyrrolothienopyrazine moieties were systematically explored as well as replacement of the piperazine by other cyclic amines. The best compounds are in the nanomolar range of affinity for 5-HT3 receptors with high to very high selectivity (up to 10 000 for 14b). These high-affinity compounds have in common a benzyl- or allylpiperazine substituent with no substitutions on the thiophene ring. Five of these compounds (1a, 4b, 13a,b, and 14b) have been evaluated on the Von Bezold-Jarisch reflex and were characterized as partial agonists. One of them, 13a, has shown in vivo at very low dose a potent anxiolytic-like activity in the light/dark test.
Stem cells are the most sensitive screening tool to identify toxicity of GATA4-targeted novel small-molecule compounds
作者:S. Tuuli Karhu、Mika J. Välimäki、Mikael Jumppanen、Sini M. Kinnunen、Lotta Pohjolainen、Robert S. Leigh、Samuli Auno、Gábor Földes、Gustav Boije af Gennäs、Jari Yli-Kauhaluoma、Heikki Ruskoaho、Virpi Talman
DOI:10.1007/s00204-018-2257-1
日期:2018.9
animal intensive. More thorough toxicity profiling already in the early drug discovery projects using humancell models, which more closely resemble the physiological cell types, would help to decrease drug development costs. In this study we aimed to compare different cardiac and stem cell models for in vitro toxicity testing and to elucidate structure–toxicityrelationships of novel compounds targeting
Nouveaux éthers d'oximes tricycliques, leur procédé de préparation et les compositions pharmaceutiques qui les contiennent
申请人:ADIR ET COMPAGNIE
公开号:EP0718299A1
公开(公告)日:1996-06-26
La présente invention concerne les composés de formule ( I ) :
dans laquelle A, x, y, R1, R2 et R3 sont tels que définis dans la description.
Médicaments.
Ethers d'oximes tricycliques, leur procédé de préparation et les compositions pharmaceutiques qui les contiennent
申请人:ADIR ET COMPAGNIE
公开号:EP0718299B1
公开(公告)日:2000-04-05
MODIFIED CLEAVASES, USES THEREOF AND RELATED KITS
申请人:Encodia, Inc.
公开号:US20210214701A1
公开(公告)日:2021-07-15
Provided herein are modified cleavases for removing amino acids from peptides, polypeptides, and proteins. Also provided are methods of using the modified cleavases for treating polypeptides, and kits comprising the modified cleavase. In some embodiments, the methods and the kits also include other components for macromolecule sequencing and/or analysis.