The present invention relates to compounds of the formula (I) wherein R1a, R1b, R2, R3, (R4)n and ring (A) are as described in the description, to their preparation, to pharmaceutically acceptable salts thereof, and to their use as pharmaceuticals, to pharmaceutical compositions containing one or more compounds of formula (I), to methods for the preparation of such compounds of formula (I), and especially to their use as TPH modulators.
Substituted heteroarylpiperidine derivatives as melanocortin-4 receptor modulators
申请人:Santhera Pharmaceuticals (Schweiz) AG
公开号:EP2019100A1
公开(公告)日:2009-01-28
The present invention relates to substituted heteroarylpiperidine derivatives as melanocortin-4 receptor modulators. Depending on the structure and the stereochemistry the compounds of the invention are either selective agonists or selective antagonists of the human melanocortin-4 receptor (MC-4R). The agonists can be used for the treatment of disorders and diseases such as obesity, diabetes and sexual dysfunction, whereas the antagonists are useful for the treatment of disorders and diseases such as cancer cachexia, muscle wasting, anorexia, anxiety and depression. Generally all diseases and disorders where the regulation of the MC-4R is involved can be treated with the compounds of the invention.
Electrophilic Cyclization of <i>o</i>-Acetoxy- and <i>o</i>-Benzyloxyalkynylpyridines: An Easy Entry into 2,3-Disubstituted Furopyridines
作者:Antonio Arcadi、Sandro Cacchi、Sabrina Di Giuseppe、Giancarlo Fabrizi、Fabio Marinelli
DOI:10.1021/ol0261581
日期:2002.7.1
[reaction: see text] 2,3-Disubstituted furo[3,2-b]pyridines, 2,3-disubstituted furo[2,3-b]pyridines, and 2,3-disubstituted furo[2,3-c]pyridines are readily prepared under mild conditions via the palladium-catalyzed cross-coupling of 1-alkynes with o-iodoacetoxy- or o-iodobenzyloxypyridines, followed by electrophilic cyclization by I(2) or by PdCl(2) under a balloon of carbon monoxide.
Furo[3,2-b]pyridine: a convenient unit for the synthesis of polyheterocycles
作者:Anthony Chartoire、Corinne Comoy、Yves Fort
DOI:10.1016/j.tet.2008.09.008
日期:2008.11
An efficient and rapid synthesis of furo[3,2-b]pyridine 1 is described using a one-pot Sonogashira coupling/heteroannulation sequence. Regioselectivelithiation of this synthon was performed leading to various 2-substituted furo[3,2-b]pyridines. Some of them were used as substrates for short functional synthesis of polyheterocycles.
使用一锅Sonogashira偶联/杂环化序列描述了快速合成呋喃并[3,2- b ]吡啶1。进行该合成子的区域选择性锂化,产生各种2-取代的呋喃并[3,2- b ]吡啶。其中一些被用作多杂环短功能合成的底物。
Rational Improvement of Molar Absorptivity Guided by Oscillator Strength: A Case Study with Furoindolizine‐Based Core Skeleton
作者:Youngjun Lee、Ala Jo、Seung Bum Park
DOI:10.1002/anie.201506429
日期:2015.12.21
The rationalimprovement of photophysical properties can be highly valuable for the discovery of novel organic fluorophores. Using our new design strategy guided by the oscillatorstrength, we developed a series of full‐color‐tunable furoindolizine analogs with improved molarabsorptivity through the fusion of a furan ring into the indolizine‐based Seoul fluorophore. The excellent correlation between