Rapid access to 3-acyl indoles using ethyl acetate/triflic acid couple as the acylium donor and Cu(OAc)<sub>2</sub> catalysed aerial oxidation of indole benzoins
作者:Ranadeep Talukdar
DOI:10.1039/d0ob01977a
日期:——
Esters are potential acyl donors but are relatively unexplored for that purpose. A facile installation of acyl groups at the C-3 position of indoles under triflic acid catalysed conditions with easily available and cheap esters as new acylating agents is described herein. Furthermore, heterocycles like N-protected pyrrole, furan and thiophene were also suitable substrates for similar C-2 acylation
Synthesis and biological evaluation of 3-(1H-indol-3-yl)pyrazole-5-carboxylic acid derivatives
作者:Datong Zhang、Guangtian Wang、Chubing Tan、Weiren Xu、Yuan Pei、Lingyan Huo
DOI:10.1007/s12272-011-0301-2
日期:2011.3
A series of novel compounds bearing a 3-(1H-indol-3-yl)pyrazole-5-carboxylic acid nucleus were synthesized. Analytical and spectral data confirmed the structures of the new compounds. The structures of the regioisomers in this series were determined by 1H-NMR spectra. The title compounds were evaluated for their endothelin-1 antagonist activities. In the in vitro functional assay, compounds 23, 24
Exploring Heteroaryl-pyrazole Carboxylic Acids as Human Carbonic Anhydrase XII Inhibitors
作者:Roberta Cadoni、Nicolino Pala、Carrie Lomelino、Brian P. Mahon、Robert McKenna、Roberto Dallocchio、Alessandro Dessì、Mauro Carcelli、Dominga Rogolino、Vanna Sanna、Mauro Rassu、Ciro Iaccarino、Daniela Vullo、Claudiu T. Supuran、Mario Sechi
DOI:10.1021/acsmedchemlett.7b00229
日期:2017.9.14
We report the synthesis, biological evaluation, and structural study of a series of substituted heteroaryl-pyrazole carboxylic acid derivatives. These compounds have been developed as inhibitors of specific isoforms of carbonic anhydrase (CA), with potential as prototypes of a newclass of chemotherapeutics. Both X-ray crystallography and computational modeling provide insights into the CA inhibition
Oxidative Addition to the N–C Bond Vs Formation of the Zwitterionic Intermediate in Platinum(II)–Catalyzed Intramolecular Annulation of Alkynes to Form Indoles: Mechanistic Studies and Reaction Scope
Pt(II)-catalyzed intramolecular translocation annulation of ortho-alkynylamides to the formation of indoles is presented, where a proposed intermediacy of zwitterionic intermediate has been substantiated over the oxidative addition. We focused our attention on Pt(II)-catalyzed aminoacylation of alkynes both theoretically and experimentally using low boiling solvent where the formation of deacylation