[EN] 2-PYRIDYL CARBOXAMIDE-CONTAINING SPLEEN TYROSINE KINASE (SYK) INHIBITORS<br/>[FR] INHIBITEURS DE TYROSINE KINASE DE LA RATE (SYK) CONTENANT UN 2-PYRIDYL CARBOXAMIDE
申请人:MERCK SHARP & DOHME
公开号:WO2013052394A1
公开(公告)日:2013-04-11
The invention provides certain 2-pyridyl carboxamide-containing compounds of the Formula (I) or pharmaceutically acceptable salts thereof, wherein A and B are as defined herein. The invention also provides pharmaceutical compositions comprising such compounds, and methods of using the compounds for treating diseases or conditions mediated by Spleen Tyrosine Kinase (Syk) kinase.
In the paper we indicate the increasing importance of derivatives containing a dihydropyrrolo[1,2-b]pyrazole (DPP) core. We try to show our synthetic approach based on an improved Kulinkovich method as well as our new synthetic pathway. A complex methodology involving the preparation of substituted DPPs focuses on withasomnine and the synthesis of several structurally related compounds. The developed
Data-Rich Experimentation Enables Palladium-Catalyzed Couplings of Piperidines and Five-Membered (Hetero)aromatic Electrophiles
作者:Aaron C. Sather、Theodore A. Martinot
DOI:10.1021/acs.oprd.9b00233
日期:2019.8.16
palladium-catalyzed C–Ncross-coupling methodology, high-throughput experimentation was used to identify a catalyst capable of fusing piperidine-based nucleophiles with five-membered (hetero)aromatic bromides. A decomposition pathway for the standard electrophile was found, and a base screen was used to identify conditions that suppress this undesired transformation. Building on this, systematic optimization using
New synthetic route to the alkaloid withasomnine by ring transformation of a functionalized cyclopropanol via the parent pyrrolo[1,2-b]pyrazole
作者:Oleg Kulinkovich、Nikolai Masalov、Vladimir Tyvorskii、Norbert De Kimpe、Marian Keppens
DOI:10.1016/0040-4039(95)02313-5
日期:1996.2
Withasomnine has been prepared by rearrangement of 1-(3-chloropropyl)-cyclopropanol into 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole, followed by bromination and [NiCl2(dppp)]-catalyzed phenylation.
[EN] HETEROAROMATIC RING COMPOUND AS RET KINASE INHIBITOR, AND PREPARATION AND USE THEREOF<br/>[FR] COMPOSÉ CYCLIQUE HÉTÉROAROMATIQUE SERVANT D'INHIBITEUR DE KINASE RET, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 作为RET激酶抑制剂的杂芳环化合物及其制备和应用
申请人:JIANGSU CHIA TAI FENGHAI PHARMACEUTICAL CO LTD