N3-substituted 6-anilinopyrimidines and methods to treat-Gram-positive bacterial and mycoplasmal infections
申请人:——
公开号:US20030114445A1
公开(公告)日:2003-06-19
Compounds useful for treating Gram-positive bacterial and mycoplasmal infections are disclosed. The compounds have the general formulae shown below.
1
本发明揭示了用于治疗革兰氏阳性细菌和支原体感染的化合物。该化合物具有下面所示的一般式。1
Pyridyl alkene and pyridyl alkine- acid amides as cytostatics and immuno-suppressives
申请人:Biedermann Elfi
公开号:US20070219197A1
公开(公告)日:2007-09-20
The present invention relates to new pyridine compounds, methods for their production, medicaments containing these compounds as well as their use, especially in the treatment of tumor conditions and/or as cytostatic agents or as immunosuppressive agents.
Pyridyl Alkene and Pyridyl Alkine-Acid Amides as Cytostatics and Immunosuppressives
申请人:Biedermann Elfi
公开号:US20070142377A1
公开(公告)日:2007-06-21
The invention relates to a new pyridyl alkene and pyridyl alkine acid amides according to the general formula (I)
as well as methods for their production, medicaments containing these compounds as well as their medical use, especially in the treatment of tumors or for immunosuppression.
Synthesis, pharmacological activity and structure affinity relationships of spirocyclic σ1 receptor ligands with a (2-fluoroethyl) residue in 3-position
作者:Eva Große Maestrup、Christian Wiese、Dirk Schepmann、Peter Brust、Bernhard Wünsch
DOI:10.1016/j.bmc.2010.11.013
日期:2011.1
In order to develop a fluorinated radiotracer for imaging of sigma(1) receptors in the central nervous system a series of (2-fluoroethyl) substituted spirocyclic piperidines 3 has been prepared. In the key step of the synthesis 2-bromocinnamaldehyde acetal 5 was added to piperidones 6 with various substituents at the N-atom. Unexpectedly, this reaction led to 2-benzoxepines 8, which were contracted with acid to afford the spirocyclic 2-benzofuranacetaldehydes 9. The best yields were obtained, when the transformations up to the alcohols 10 were performed without isolation of intermediates. Generally the (2-fluoroethyl) derivatives 3 have higher sigma(1) affinity and sigma(1)/sigma(2) selectivity than the corresponding (3-fluoropropyl) derivatives 2. The most promising candidate for the development as radiotracer is the (2-fluoroethyl) derivative 3a (WMS-1828, fluspidine, 1'-benzyl-3-(2-fluoroethyl)-3H-spiro[[2]benzofuran-1,4'-piperidine]), which shows subnanomolar sigma(1) affinity (K-i = 0.59 nM) and excellent selectivity over the sigma(2) subtype (1331-fold) as well as some other receptor systems. The novel synthetic strategy also allows the systematic pharmacological evaluation of intermediate alcohols 10. Despite their high sigma(1) affinity (K-i = 6-32 nM) and selectivity the alcohols 10 are 10-30-fold less potent than the bioisosteric fluoro derivatives 3. (C) 2010 Elsevier Ltd. All rights reserved.
Efficient Synthesis of a Highly Selective NPY-5 Receptor Antagonist: A Drug Candidate for the Treatment of Obesity
作者:Takahiro Itoh、Shinji Kato、Nobuaki Nonoyama、Toshihiro Wada、Kenji Maeda、Toshiaki Mase、Matthew M. Zhao、Jake Z. Song、David M. Tschaen、James M. McNamara
DOI:10.1021/op0600963
日期:2006.7.1
A concise and practical synthesis of highly selective NPY-5 receptor antagonist 1 is described. The animopyrazine intermediate 3 was synthesized via either monobromination of aminopyrazine or palladium-catalyzed regioselective debromination of dibromopyrazine followed by an efficient Suzuki-Miyaura coupling. For the preparation of the spirolactone piperidine 2, significantly improved yield was achieved by using a combination of n-BuMgCl and n-BuLi. This protocol also dramatically increased the thermal stability of the aryllithium intermediate and eliminated the requirement for costly cryogenic conditions. The union of the spirolactone piperidine 2 and aminopyrazine 3 via a carbonyl group was accomplished using phenyl chloroformate delivering the target molecule in high yield.