Mild and Efficient Nickel-Catalyzed Heck Reactions with Electron-Rich Olefins
作者:Thomas M. Gøgsig、Jonatan Kleimark、Sten O. Nilsson Lill、Signe Korsager、Anders T. Lindhardt、Per-Ola Norrby、Troels Skrydstrup
DOI:10.1021/ja2084509
日期:2012.1.11
A new efficient protocol for the nickel-catalyzed Heckreaction of aryl triflates with vinyl ethers is presented. Mild reaction conditions that equal those of the corresponding palladium-catalyzed Heckreaction are applied, representing a practical and more sustainable alternative to the conventional regioselective arylation of vinyl ethers. A catalytic system comprised of Ni(COD)(2) and 1,1'-bis(
photoinduced acylation of N‐heterocycles is explored. This visible‐lighttriggered reaction occurs not only under extremely mild reaction conditions, but also does not require the presence of a photosensitizer. The mechanistic studies suggest formation of EDA complexes prompt to harness the energy from visible‐light. Compatibility with a large panel of α‐keto acids as acyl precursors and an array of N‐heterocycles
[EN] NEW TARGETED CYTOTOXIC ISOCOMBRETAQUINOLINE DERIVATIVES AND CONJUGATES THEREOF<br/>[FR] NOUVEAUX DÉRIVÉS D'ISOCOMBRÉTAQUINOLÉINE CYTOTOXIQUE CIBLÉS ET LEURS CONJUGUÉS
申请人:AVICENNA ONCOLOGY GMBH
公开号:WO2018178277A1
公开(公告)日:2018-10-04
The present invention is directed to novel natural product-derived combretastatin- based compounds useful as payloads in drug-conjugates constructs with cell target binding moieties (CTBM) and payload-linker compounds useful in connection with drug conjugates. The present invention further relates to new isoNH2CombretaQuinoline compositions including the aforementioned payloads, payload-linkers and drug conjugates, and methods for using these payloads, payload-linkers and drug conjugates, to treat pathological conditions including cancer.
Iron-catalyzedacetylation of electron deficient N-heteroarenes has been reported using triethylorthoformate as robust and inexpensive acetyl source. This new method is successfully applied for the acetylation of quinolines, isoquinoline, quinoxalines, arylpyridines, bipyridines, and benzothiazole.