Photochemical intramolecular amination for the synthesis of heterocycles
作者:Shawn Parisien-Collette、Corentin Cruché、Xavier Abel-Snape、Shawn K. Collins
DOI:10.1039/c7gc02261a
日期:——
formed in good to excellent yields via photochemical conversion of the corresponding substituted aryl azides under irradiation with purple LEDs in a continuous flow reactor. The experimental set-up is tolerant to UV-sensitive functional groups while affording diverse carbazoles, as well as an indole and pyrrole framework, in short reaction times. The photochemical method is presumed to progress through
Suzuki-Miyaura cross coupling, followed by triphenylphosphine mediated Cadogan reductive cyclization sequence provided efficient access to a series of carbazole alkaloids. In the present work, this approach was applied to the totalsynthesis of mukonine, clauszoline K, koenoline, murrayanine, murrayafoline A, mukoeic acid, glycoborine, glycozolicine, mukolidine, mukoline, glycozoline, 3-methoxy-9H-
Derivatives of pyrrolo[2,3-b]pyridine which are useful as SGK-1 kinase inhibitors are described herein. The invention described herein also describes pharmaceutical compositions containing derivatives of pyrrolo[2,3-b]pyridine and methods of using pyrrolo[2,3-b]pyridine derivatives and pharmaceutical compositions thereof in the treatment of diseases mediated by SGK-1.
Derivatives of pyrrolo[2,3-b]pyridine which are useful as SGK-1 kinase inhibitors are described herein. The invention described herein also describes pharmaceutical compositions containing derivatives of pyrrolo[2,3-b]pyridine and methods of using pyrrolo[2,3-b]pyridine derivatives and pharmaceutical compositions thereof in the treatment of diseases mediated by SGK-1.
Ni-Catalyzed Reductive C–O Bond Arylation of Oxalates Derived from α-Hydroxy Esters with Aryl Halides
作者:Mengyu Gao、Deli Sun、Hegui Gong
DOI:10.1021/acs.orglett.9b00174
日期:2019.3.15
A Ni-catalyzed reductive cross-coupling of alpha-hydroxycarbonyl compounds modified with oxalyl groups and aryl halides has been developed that furnishes alpha-aryl esters under mild conditions and tolerates a variety of functionalized aryl halides bearing electron withdrawing and-donating groups. This work highlights C-O bond fragmentation on secondary alkyl carbon centers that generates alpha-carbonyl radicals.