Co 2(CO)8介导的空间可比的(2-苯基乙炔基)杂芳族化合物与降冰片烯的分子间Pauson-Khand(PK)反应得到环戊烯酮产品,在这项研究中进行了检查。事实证明,利用聚焦微波介电加热的合成协议是有效合成PK环戊烯酮产品必不可少的。“π缺陷”杂芳族底物(例如2-吡喃酮)和一些“π过量”杂芳族化合物(例如2-和3-噻吩和2-呋喃)有利于新形成的环戊烯酮环中的β位置。其他π过量的杂芳族化合物(例如2-吡咯或2-吲哚)偏向α位。π-过量的3-吲哚衍生物给出了几乎相等的区域异构体混合物。氮在含吡啶基炔烃底物中的位置也影响PK反应的区域化学结果。拥有近端氮原子的2-吡啶基炔烃相对于4-吡啶基变异体会极大地影响区域选择性,有利于新形成的环戊烯酮环中的β位置。2-嘧啶炔基表现出与2-吡啶炔基相似的行为。不参与与降冰片烯进行PK反应的化合物包括(2-苯基乙炔基)咪唑和相关的苯并咪唑类,它们可促进原位生成的快速分解(μ2-炔)Co
The regioselective synthesis of 2-alkynyl(benz)imidazoles was successfully achieved by Pd(ii)/Ag(i)-mediated dehydrogenative alkynylation of the corresponding (benz)imidazoles with terminal alkynes in an open vessel.
Phenylethynyl and styryl derivatives of imidazole and fused ring heterocycles
申请人:——
公开号:US20020128263A1
公开(公告)日:2002-09-12
This invention relates to a compound and the use of the compound of the formula
1
wherein R
1
, R
2
, R
3
, R
4
and R
5
are as defined in the description, A signifies —CH═CH— or —C≡C—; and B signifies
2
wherein R
6
to R
26
, X and Y are as defined in the specification or a pharmaceutically acceptable salt thereof, for use in pharmaceutical compositions for the treatment or prevention of mGluR5 receptor mediated disorders.
Treatment of neuromuscular dysfunction of the lower urinary tract with selective mGlu5 antagonists
申请人:Recordati S.A.
公开号:US20040215284A1
公开(公告)日:2004-10-28
The invention is directed to methods of using antagonists selective for the metabotropic mGlu5 receptor to treat conditions of neuromuscular dysfunction of the lower urinary tract in a mammal. Provided are methods of treating a mammal suffering from a condition of neuromuscular dysfunction of the lower urinary tract by administering a selective mGlu5 antagonist. The selective mGlu5 antagonist may be administered alone or in combination with one or more additional therapeutic agent for treating such a condition. Also provided are methods of identifying selective mGlu5 antagonists that are useful for treating neuromuscular dysfunction of the lower urinary tract in a mammal.