One-pot preparation of pyrrole derivatives via the copper-catalyzed [4+1] annulation of propargylic amines with ethyl glyoxylate and phenylglyoxal in the presence of piperidine
We describe how copper(II) chloride efficiently catalyzes the [4+1] annulation of propargylamines with either ethyl glyoxylate or phenylglyoxal functioning as a C1 unit, in the presence of piperidine, which leads to a straightforward and one-pot preparation of pyrrolederivatives. The key feature in this annulation is the in-situ generation of an N,O-hemiacetal intermediate from either the glyoxylate
Copper(II)-Catalyzed [4+1] Annulation of Propargylamines with<i>N</i>,<i>O</i>-Acetals: Entry to the Synthesis of Polysubstituted Pyrrole Derivatives
作者:Norio Sakai、Hiroaki Hori、Yohei Ogiwara
DOI:10.1002/ejoc.201500098
日期:2015.3
Described herein is the CuCl2-catalyzed [4+1] annulation of a variety of propargylamines with N,O-acetals that function as a C1 unit, leading to the production of polysubstitutedpyrrolederivatives. Three important features of the N,O-acetal during the [4+1] annulation series via 5-endo-dig cyclization are described: an enolizable substituent adjacent to the central sp3-carbon is required, the central
Total Synthesis of (−)-Hanishin, (−)-Longamide B, and (−)-Longamide B Methyl Ester <i>via</i> a Novel Preparation of <i>N</i>-Substituted Pyrrole-2-Carboxylates
作者:Guolin Cheng、Xinyan Wang、Hailin Bao、Chuanjie Cheng、Nan Liu、Yuefei Hu
DOI:10.1021/ol300495m
日期:2012.4.6
Page 1062. The word “longamide” was mis-spelled as “longmide” in the title, throughout the paper, including text and graphics, as well as the Supporting Information file. This article has not yet been cited by other publications.
Pictet; Steinmann, Chemische Berichte, 1902, vol. 35, p. 2532
作者:Pictet、Steinmann
DOI:——
日期:——
[EN] NOVEL PIPERAZINE DERIVATIVES AS INHIBITORS OF STEAROYL-COA DESATURASE<br/>[FR] NOUVEAUX DÉRIVÉS DE PIPÉRAZINE EN TANT QU'INHIBITEURS DE STÉAROYL-COA DÉSATURASE
申请人:FOREST LAB HOLDINGS LTD
公开号:WO2008157844A1
公开(公告)日:2008-12-24
[EN] The present invention relates to piperazine derivatives that act as inhibitors of stearoyl- CoA desaturase. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and to methods of treatment using the compounds. [FR] La présente invention concerne des dérivés de pipérazine qui agissent en tant qu'inhibiteurs de la stéaroyl-CoA désaturase. L'invention concerne également des procédés de préparation des composés, des compositions contenant les composés et des procédés de traitement utilisant les composés.