[EN] NITROGEN CONTAINING BICYCLIC CHEMICAL ENTITIES FOR TREATING VIRAL INFECTIONS [FR] ENTITÉS CHIMIQUES BICYCLIQUES AZOTÉES POUR TRAITER LES INFECTIONS VIRALES
Certain Nitrogen Containing Bicyclic Chemical Entities For Treating Viral Infections
申请人:Schmitz Franz Ulrich
公开号:US20120121540A1
公开(公告)日:2012-05-17
Provided are certain chemical entities, pharmaceutical compositions, and methods of treatment of a member of the flaviviradae family of viruses such as hepacivirus (Hepatitis C or HCV).
Certain nitrogen containing bicyclic chemical entities for treating viral infections
申请人:Schmitz Franz Ulrich
公开号:US20090176778A1
公开(公告)日:2009-07-09
Provided are certain chemical entities, pharmaceutical compositions, and methods of treatment of a member of the flaviviradae family of viruses such as hepacivirus (Hepatitis C or HCV).
Divergent Synthesis of F- and CF<sub>3</sub>-Containing N-Fused Heterocycles Enabled by Fragmentation Cycloaddition of β-CF<sub>3</sub>-1,3-Enynes with N-Aminopyridiniums Ylides
作者:Xiaotian Shi、Qiong Wang、Zhiqing Tang、Huilin Huang、Tongxin Cao、Hua Cao、Xiang Liu
DOI:10.1021/acs.orglett.4c00088
日期:2024.2.16
The two novel cyclization modes of β-CF3-1,3-enynes are presented herein for the divergent construction of F- and CF3-containing N-fused heterocycles. Fluorinated pyrazolo[1,5-a]pyridines were afforded from β-CF3-1,3-enynes with N-aminopyridiniums ylides via detrifluoromethylative [2 + 3] cyclizations, followed by fluorine transfer from a CF3 unit. Whereas reaction with N-aminoisoquinoliniums ylides
本文提出了β-CF 3 -1,3-烯炔的两种新环化模式,用于含F-和CF 3的N-稠合杂环的不同构建。氟化吡唑并[1,5- a ]吡啶由β-CF 3 -1,3-烯炔与N-氨基吡啶鎓叶立德通过脱三氟甲基化[2 + 3]环化得到,然后从CF 3单元进行氟转移。而与N-氨基异喹啉鎓叶立德的反应通过前所未有的断裂[3+2]-环加成得到CF 3 -取代的吡咯并[2,1- a ]异喹啉。此外,通过氟化杂环的进一步衍生化证明了克级实验和合成实用性。
Synthesis of 2-fluorinated pyrazolo[1,5-a]pyridines via base- mediated [3+2] cycloaddition of N-aminopyridinium salts with gem-difluorostyrenes
作者:Yang Feng、Yuanyuan Wu、Zengjiang Yue、Ying Fu、Zhengyin Du
DOI:10.1039/d4nj02150a
日期:——
2-fluoropyrazolo[1,5-a]pyridines through base-promoted [3+2] cycloaddition of N-aminopyridinium salts with gem-difluorostyrenes has been established. A range of N-heterocycles with 2-fluorinated pyrazo[1,5-a]pyridines were efficiently obtained in moderate to good yields. The impact of different substituents on the reaction was discussed in detail. The protocol shows great potential for the synthesis of valuable