1
|
A highly sensitive fluorogenic “turn-on” chemosensor for the recognition of Cd2+ based on a hybrid purine-quinoline Schiff base. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132123] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
2
|
Xu Y, Yuan S, Zhang Y, Wang H, Yang X, Pei M, Zhang G. A new multifunctional sensor for sequential recognizing of Zn2+ and PPi in acetonitrile solution and detection of In3+ in DMF solution. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112348] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
3
|
Šišuļins A, Bucevičius J, Tseng YT, Novosjolova I, Traskovskis K, Bizdēna Ē, Chang HT, Tumkevičius S, Turks M. Synthesis and fluorescent properties of N(9)-alkylated 2-amino-6-triazolylpurines and 7-deazapurines. Beilstein J Org Chem 2019; 15:474-489. [PMID: 30873231 PMCID: PMC6404417 DOI: 10.3762/bjoc.15.41] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/31/2019] [Indexed: 12/13/2022] Open
Abstract
The synthesis of novel fluorescent N(9)-alkylated 2-amino-6-triazolylpurine and 7-deazapurine derivatives is described. A new C(2)-regioselectivity in the nucleophilic aromatic substitution reactions of 9-alkylated-2,6-diazidopurines and 7-deazapurines with secondary amines has been disclosed. The obtained intermediates, 9-alkylated-2-amino-6-azido-(7-deaza)purines, were transformed into the title compounds by CuAAC reaction. The designed compounds belong to the push-pull systems and possess promising fluorescence properties with quantum yields in the range from 28% to 60% in acetonitrile solution. Due to electron-withdrawing properties of purine and 7-deazapurine heterocycles, which were additionally extended by triazole moieties, the compounds with electron-donating groups showed intramolecular charge transfer character (ICT/TICT) of the excited states which was proved by solvatochromic dynamics and supported by DFT calculations. In the 7-deazapurine series this led to increased fluorescence quantum yield (74%) in THF solution. The compounds exhibit low cytotoxicity and as such are useful for the cell labelling studies in the future.
Collapse
Affiliation(s)
- Andrejs Šišuļins
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Jonas Bucevičius
- Department of Organic Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| | - Yu-Ting Tseng
- Department of Chemistry, National Taiwan University No.1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| | - Irina Novosjolova
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Kaspars Traskovskis
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Ērika Bizdēna
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University No.1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| | - Sigitas Tumkevičius
- Department of Organic Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| | - Māris Turks
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| |
Collapse
|