Targeted Synthesis of 9-Azabicyclo[4.2.1]nona-2,4,7-trienes by Cobalt(I)-Catalyzed [6π+2π]-Cycloaddition of Alkynes to <i>N</i>
-Substituted Azepines and Their Antitumor Activity
作者:Vladimir A. D'yakonov、Gulnara N. Kadikova、Ramil N. Nasretdinov、Lilya U. Dzhemileva、Usein M. Dzhemilev
DOI:10.1002/ejoc.201901837
日期:2020.2.7
A broad range of practically valuable substituted 9‐azabicyclo[4.2.1]nona‐2,4,7‐trienes using the reaction of cobalt(I)‐catalyzed [6π+2π]‐cycloaddition of alkynes to N‐carbethoxy(phenoxy)azepines was obtained for the first time. The synthesized 9‐azabicyclo[4.2.1]nona‐2,4,7‐trienes were found to exhibit high antitumor activity in vitro against tumor cell lines.
Synthesis of new alkynyl containing 9-azabicyclo[4.2.1]nonatrienes from diynes and azepines
作者:Gulnara N. Kadikova、Vladimir A. D’yakonov、Ramil N. Nasretdinov、Lilya U. Dzhemileva、Usein M. Dzhemilev
DOI:10.1016/j.mencom.2020.05.019
日期:2020.5
New 7-alkynyl-9-azabicyclo[4.2.1]nona-2,4,7-triene-9carboxylates were obtained upon the Co(acac)2(dppe)/Zn/ZnI2catalyzed [6p+2p]-cycloaddition of 1,3-diynes to ethyl/phenyl azepine-1-carboxylates. The structures of the obtained azacyclic compounds were established by 1D and 2D NMR spectroscopy. The compounds prepared were tested for antitumor activities in vitro against Jurkat, K562, U937 and HL60
Cobalt(I)-catalyzed [6π+2π]-cycloaddition of allenes to N-carbethoxy(phenoxy)azepines for the synthesis of 9-azabicyclo[4.2.1]nona-2,4-dienes
作者:Gulnara N. Kadikova、Vladimir A. D’yakonov、Ramil N. Nasretdinov、Lilya U. Dzhemileva、Usein M. Dzhemilev
DOI:10.1016/j.tet.2020.130996
日期:2020.3
The [6π+2π]-cycloaddition of allenes to N-carbethoxyazepine or N-carbophenoxyazepine catalyzed by the Co(acac)2(dppe)/Zn/ZnI2 system was performed for the first time and gave previously unknown substituted 9-azabicyclo[4.2.1]nona-2,4-dienes and 16-azatricyclo[9.4.1.02,10]hexadeca-2,12,14-trienes in 75–95% yields. The structures of the resulting azacyclic compounds were reliably proved using NMR spectroscopy