[EN] QUINOLONE CARBOXYLIC ACID DERIVATIVES FOR TREATMENT OF HYPERPROLIFERATIVE CONDITIONS<br/>[FR] DERIVES D'ACIDE CARBOXYLIQUE DE QUINOLONE POUR LE TRAITEMENT DES TROUBLES HYPERPROLIFERATIFS
申请人:BAYER PHARMACEUTICALS CORP
公开号:WO2005097752A1
公开(公告)日:2005-10-20
Quinolone carboxylic acid derivatives of formula (I) wherein Ar is an optionally substituted phenyl, pyridyl, or pyrimidinyl group and the substituent groups R1, R4, R10, R11, R19, and R20 are as defined in the specification, pharmaceutical compositions containing them, and methods of using them in treatment of hyperproliferative diseases such as cancer are disclosed and claimed.
Ring-contraction of hantzsch esters and their derivatives to pyrroles <i>via</i> electrochemical extrusion of ethyl acetate out of aromatic rings
作者:Xu Liu、Chang Liu、Xu Cheng
DOI:10.1039/d1gc00487e
日期:——
ring-contraction of HEs and theirs pyridinederivatives is developed to obtain polysubstituted pyrroles. This process provides an orthogonal utilization of Hantzsch esters for the well-documented application as side chain or hydrogen donors. The formal transformation shows an extrusion of ethyl acetate out of the pyridine ring in a single step. In addition to the novel transformation, we also discovered the Lewis