Substituted 1,3-dihydro-2H-pyrrolo[2,3-b]pyridin-2-ones as potential antiinflammatory agents
作者:Pauline C. Ting、James J. Kaminski、Margaret H. Sherlock、Wing C. Tom、Joe F. Lee、Robert W. Bryant、Arthur S. Watnick、Andrew T. McPhail
DOI:10.1021/jm00172a004
日期:1990.10
A series of analogues based on the 1,3-dihydro-2H-pyrrolo[2,3-b]pyridin-2-one ring system have been synthesized and shown to possess oral antiinflammatory activity in both the reverse passive Arthus reaction (RPAR) pleural cavity assay in rats and in the adjuvant-induced arthritic rat model (AAR). Several members of this series additionally exhibit an inhibitory effect on the in vivo production of prostaglandin- and leukotriene-derived products or arachidonic acid metabolism although these compounds exhibit no significant inhibitory activity against the cyclooxygenase and 5-lipoxygenase enzymes in vitro. Structure-activity relationships in this series are discussed.
TING, PAULINE C.;KAMINSKI, JAMES J.;SHERLOCK, MARGARET H.;TOM, WING C.;LE+, J. MED. CHEM., 33,(1990) N0, C. 2697-2706
作者:TING, PAULINE C.、KAMINSKI, JAMES J.、SHERLOCK, MARGARET H.、TOM, WING C.、LE+
DOI:——
日期:——
Enantioselective Synthesis of C−N Axially Chiral N‐Aryloxindoles by Asymmetric Rhodium‐Catalyzed Dual C−H Activation
作者:Honghe Li、Xiaoqiang Yan、Jitan Zhang、Weicong Guo、Jijun Jiang、Jun Wang
DOI:10.1002/anie.201901619
日期:2019.5.13
reaction is reported. A variety of C−Naxially chiral N‐aryloxindoles have been enantioselectively synthesized by an asymmetric rhodium‐catalyzed dual C−H activation reaction of N‐aryloxindoles and alkynes. High yields and enantioselectivities were obtained (up to 99 % yield and up to 99 % ee). To date, it is also the first example of the asymmetricsynthesis of C−Naxially chiral compounds by such a C−H
A Class of Readily Tunable Planar‐Chiral Cyclopentadienyl Rhodium(III) Catalysts for Asymmetric C–H Activation
作者:Xiaoqiang Yan、Jijun Jiang、Jun Wang
DOI:10.1002/anie.202201522
日期:2022.6.7
rhodium(III) (CpRhIII) complexes are powerful catalysts for promoting asymmetric C−H activation reactions. At present, their preparations mainly rely on the development of various chiral cyclopentadienyl (Cp) ligands by linking or embedding the Cp motif to or into a certain chiral backbone. In contrast, development of planar-chiral only CpRhIII catalysts bearing non-chiral Cp ligands remains a formidable