13161-85-8Relevant articles and documents
Visible-Light Cascade Photooxygenation of Tetrahydrocarbazoles and Cyclohepta[b]indoles: Access to C,N-Diacyliminium Ions
Brasholz, Malte,Bresien, Jonas,Frahm, Mario,Gronbach, Lisa Marie,Hoffmann, Frank,Lorenz, Felix,Villinger, Alexander,Voss, Alice,von Drathen, Thorsten
, p. 12450 - 12454 (2020)
Tetrahydrocarbazoles and perhydrocyclohepta[b]indoles undergo a catalytic cascade singlet oxygenation in alkaline medium, which leads to chiral tricyclic perhydropyrido- and perhydroazepino[1,2-a]indoles in a single operation. These photooxygenation products are new synthetic equivalents of uncommon C,N-diacyliminium ions and can be functionalized with the aid of phosphoric acid organocatalysis.
Synthesis of certain tetrahydroacridine derivatives of anticipated medicinal value
Fathhalla, Omar A.,Mohamed, Mosaad S.,Farag, Madeha A.,Ismail, Rehab Sayed Ahmed
, p. 3487 - 3505 (2013)
This study aims at the synthesis and evaluation of the chemotherapeutic activity of a number of 9-substituted tetrahydroacridine derivatives. The starting material, acridine hydrazide, could be prepared through the interaction between cyclohexanone and anthranilic acid, then chlorination of the product, then condensation of the last compound with hydrazine hydrate. The structures of the new compounds were established by IR, 1H NMR, MS spectra, and elemental analysis in certain cases. Antitumor activities as a trial to obtain more effective and less toxic agents were evaluated. The antitumor activity results indicated that the selected tetrahydroacridine derivatives showed antitumor activity against the liver cancer (HEPG2) tumor cell line tested, but with varying intensities in comparison to the known anticancer drugs, 5-fluorouracil and doxorubicin. It was found that compound VIb was the most active and induced a marked growth inhibition (0.694 μg/ml concentration) in a dose-dependent manner against liver cancer (HEPG2), while compound XVIIIa was second in regards to the growth inhibition activity (2.97 μg/ml concentration).
The Vilsmeier-Haack formylation of 2,3-dihydro-4H-1,3-benzoxazin-4-ones and isomeric 1,2-dihydro-4H-3,1-benzoxazin-4-ones: An effective approach to functionalized 2H-/4H-chromenes and tetrahydroacridines
Farat, Oleg K.,Markov, Victor I.,Varenichenko, Svetlana A.,Dotsenko, Victor V.,Mazepa, Alexander V.
, p. 5554 - 5561 (2015)
We found that 1,3- and isomeric 3,1-benzoxazin-4-ones react with the Vilsmeier reagent in vastly different ways. Thus, either 2H- or 4H-chromenes were obtained in good yields when 1,3-benzoxazin-4-ones were reacted at 75-80 °C, while the formylation of 3,1-benzoxazines at ambient temperature leads to acridine-9-one or 9-chloroacridine derivatives, depending on the amount of Vilsmeier reagent and the nature of substrate.