Synthesis of 2-ethoxycarbonylthieno[2,3-b]quinolines in biomass-derived solvent γ-valerolactone and their biological evaluation against protein tyrosine phosphatase 1B
An efficient synthesis of strained thio-bridged compounds via Pd(0) catalyzed intramolecular Csp2(aryl)-Csp3(alkyl) cross dehydrohalogenative coupling reaction
作者:Mayur I. Morja、Janki J. Patel、Prakashsingh M. Chauhan、Kishor H. Chikhalia
DOI:10.1016/j.tet.2020.131348
日期:2020.8
An operationally simple and efficient strategy employing palladium(0) catalyst to construct a wide range of thiobridged compounds through intramolecular Csp2(aryl)-Csp3(alkyl) cross-dehydrohalogenative coupling reaction has been reported. This methodology proceeds smoothly through six-membered palladacycles and serving as a keystone for the generation of C–C bond to furnish thiobridged derivative in
NOVEL PYRIMIDINE COMPOUND HAVING BENZYL(HETEROCYCLICMETHYL)AMINE STRUCTURE AND PHARMACEUTICAL PRODUCT CONTAINING THE SAME
申请人:Kowa Company. Ltd.
公开号:EP2138489A1
公开(公告)日:2009-12-30
A compound represented by the following general formula (I), wherein R1, R2, R3, R4 and R5 represent hydrogen atom, a halogen atom, a lower alkyl group and the like, R6 represents an alkyl group, a cycloalkyl group and the like, R7 and R8 represent hydrogen atom, a lower alkyl group, a (lower cycloalkyl)(lower alkyl) group and the like, R9 represents hydrogen atom, a halogen atom, a lower alkoxy group and the like, R10 and R11 represent hydrogen atom, a lower alkyl group, a lower alkoxy group, a halo(lower alkyl) group and the like, and A represents a heterocyclic ring constituted by 6 to 10 atoms, which has potent inhibitory activity on cholesterol ester transfer protein (CETP).
One-Pot Synthesis of Novel Quinoline-Fused Azeto[1,2-a]benzimidazole Analogs Via Intramolecular Pd-Catalyzed C–N Coupling
作者:Amit B. Patel、Premlata Kumari、Kishor H. Chikhalia
DOI:10.1007/s10562-014-1266-9
日期:2014.7
A common strategy to incorporate four-membered ring system between benzimidazole and quinoline cores was developed by one-pot protocol involving the condensation of o-phenylenediamine with 2-chloroquinoline-3-carbaldehyde derivatives followed by intramolecular palladium catalyzed C-N coupling. A series of ligands, palladium sources, bases and solvents were screened to optimize the reaction conditions for the synthesis of quinoline-fused azeto[1,2-a]benzimidazoles.An efficient catalytic system for the introduction of 4-membered-ring system between benzimidazole and quinoline cores has been developed by one-pot intramolecular C-N coupling of o-phenylenediamine with 6-substituted-2-chloroquinoline-3-carbaldehydes.