作者:Victor Snieckus、Francis Beaulieu、Kunihiko Mohri、Wei Han、Christopher K. Murphy、Franklin A. Davis
DOI:10.1016/s0040-4039(00)73211-4
日期:1994.5
Regiospecific fluorination using N-fluorobenzenesulfonimide (NFSi) and N-fluoro-O-benzenedisulfonimide (NFOBS) reagents via directed ortho metalation (Scheme 1) is reported and exceptions of PhSO2 transfer from NFSi are described.
The present invention relates to novel compounds of formula (A) and (B) as modulators of GPR-119, methods of preparing them, pharmaceutical compositions containing them and methods of treatment, prevention and/or amelioration of GPR-119 mediated diseases or disorders with them.
[EN] AMINOHETEROARYL KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASES DE TYPE AMINOHÉTÉROARYLE
申请人:ANRUI BIOMEDICAL TECH GUANGZHOU CO LTD
公开号:WO2022111621A1
公开(公告)日:2022-06-02
Provided herein are novel compounds (e.g., Formula I or II), pharmaceutical compositions, and methods of using related to cyclin dependent kinases (CDKs). The compounds herein are typically CDK2 inhibitors, which can be used for treating a variety of diseases or disorders, such as cancer.
Selective, Electrophilic Fluorinations Using N-Fluoro-o-benzenedisulfonimide
作者:Franklin A. Davis、Wei Han、Christopher K. Murphy
DOI:10.1021/jo00120a014
日期:1995.7
The synthesis of N-fluoro-o-benzenedisulfonimide (NFOBS, 2) and its use as an ''electrophilic'' fluorinating reagent with nucleophilic substrates is described and compared with that of N-fluorobenzenesulfonimide (NFSi, 3). NFOBS (2) is prepared in three steps in 81% overall yield from commercially available o-benzenedisulfonic acid (4) and involves treatment of o-benzenedisulfonimide (6) with dilute fluorine (10% F-2/N-2). Reaction of 2 with metal enolates, silyl enol ethers, and 1,3-dicarbonyl compounds affords the corresponding alpha-fluoro compounds in yields up to 95%, with good control of mono- and difluorination. Fluorination of ortho-metalated aromatic compounds was achieved in modest to good yields (10-80%). While the reactivities of 2 and 3 are similar, better yields were observed with the former reagent in the fluorination of metal enolates, Grignard and lithium reagents, while 3 gave better results with the ortho-lithiated aromatic substrates. The available evidence suggests an S(N)2-type mechanism for the fluorination of nucleophilic substrates by these reagents.
Snieckus Victor, Beaulieu Francis, Mohri Kunihiko, Han Wei, Murphy Christ+, Tetrahedron Lett, 35 (1994) N 21, S 3465- 3468
作者:Snieckus Victor, Beaulieu Francis, Mohri Kunihiko, Han Wei, Murphy Christ+