Access to acridones by tandem copper(<scp>i</scp>)-catalyzed electrophilic amination/Ag(<scp>i</scp>)-mediated oxidative annulation of anthranils with arylboronic acids
An efficient and practical approach for the synthesis of medicinally important acridones was developed from anthranils and commercially available arylboronic acids by a tandem copper(I)-catalyzed electrophilic amination/Ag(I)-mediated oxidative annulationstrategy. This new and straightforward protocol displayed a broad substrate scope (25 examples) and high functional group tolerance. What's more
Synthesis of Polycyclic Indolone and Pyrroloindolone Heterocycles via the Annulation of Indole- and Pyrrole-2-Carboxylate Esters with Arynes
作者:Yeeman Ramtohul、Robert Giacometti
DOI:10.1055/s-0029-1217535
日期:2009.7
A mild and general method for the synthesis of a variety of polycyclic indolone and pyrroloindolone heterocycles via the reaction of indole- and pyrrole-2-carboxylate esters with arynes has been developed.
Use of N-lithiated ethyl anthranilates as 1,4-dipole equivalents in 1,4-dipolearyne cycloaddition: A novel approach to the synthesis of acridones
作者:Subhash P. Khanapure、Baburao M. Bhawal、Edward R. Biehl
DOI:10.1016/0040-4039(90)80169-m
日期:1990.1
A new strategy for acridones based on 1,4-dipolar cycloaddition of N-lithiated ethyl anthranilates, which function as 1,4-dipole equivalents, with arynes is reported.
The invention relates to tricyclic heterocyclic derivatives, or pharmaceutically-acceptable salts or in vivo hydrolysable esters thereof, which possess anti-cancer activity. The invention also relates to processes for the manufacture of said tricyclic heterocyclic derivatives, to novel pharmaceutical compositions containing them and to the use of said tricyclic heterocyclic derivatives in the manufacture of a medicament for the production of an anti-cancer effect.
The invention provides an optionally substituted tricyclic heterocyclic derivative of the formula I
wherein A together with the adjacent vinylene group of the 4-oxo-1,4-dihydropyrid-1-yl ring completes a benzene or pyridine ring;
R¹ and R², which may be the same or different, each is (1-4C)alkyl or (1-4C)alkoxy;
and R³ is hydrogen, (1-4C)alkyl or (1-4C)alkoxy;
or a pharmaceutically-acceptable salt or in vivo hydrolysable ester thereof.
Copper-Catalyzed Aerobic Oxidative CH and CC Functionalization of 1-[2-(Arylamino)aryl]ethanones Leading to Acridone Derivatives
作者:Jipan Yu、Haijun Yang、Yuyang Jiang、Hua Fu
DOI:10.1002/chem.201204169
日期:2013.3.25
Efficient copper‐catalyzedaerobicoxidative CH and CC functionalization of 1‐[2‐(arylamino)aryl]ethanones leading to acridones has been developed. The procedure involves cleavage of aromatic CH and acetyl CC bonds with intramolecular formation of a diarylketone bond. The protocol uses inexpensive Cu(O2CCF3)2 as catalyst, pyridine as additive, and economical and environmentally friendly oxygen