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Novel Bis- and Mono-Pyrrolo[2,3-d]pyrimidine and Purine Derivatives: Synthesis, Computational Analysis and Antiproliferative Evaluation

Bistrović Popov, Andrea; Vianello, Robert; Grbčić, Petra; Sedić, Mirela; Pavelić Kraljević, Sandra; Pavelić, Krešimir; Raić-Malić, Silvana (2021) Novel Bis- and Mono-Pyrrolo[2,3-d]pyrimidine and Purine Derivatives: Synthesis, Computational Analysis and Antiproliferative Evaluation. Molecules, 26 (11). ISSN 1420-3049

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Novel symmetrical bis-pyrrolo[2, 3-d]pyrimidines and bis-purines and their monomers were synthesized and evaluated for their antiproliferative activity in human lung adenocarcinoma (A549), cervical carcinoma (HeLa), ductal pancreatic adenocarcinoma (CFPAC-1) and metastatic colorectal adenocarcinoma (SW620) cells. The use of ultrasound irradiation as alternative energy input in Cu(I)-catalyzed azide- alkyne cycloaddition (CuAAC) shortened the reaction time, increased the reaction efficiency and led to the formation of exclusively symmetric bis-heterocycles. DFT calculations showed that triazole formation is exceedingly exergonic and confirmed that the presence of Cu(I) ions is required to overcome high kinetic requirements and allow the reaction to proceed. The influence of various linkers and 6-substituted purine and regioisomeric 7-deazapurine on their cytostatic activity was revealed. Among all the evaluated compounds, the 4-chloropyrrolo[2, 3-d]pyrimidine monomer 5f with 4, 4′-bis(oxymethylene)biphenyl had the most pronounced, although not selective, growth-inhibitory effect on pancreatic adenocarcinoma (CFPAC-1) cells (IC50 = 0.79 µM). Annexin V assay results revealed that its strong growth inhibitory activity against CFPAC-1 cells could be associated with induction of apoptosis and primary necrosis. Further structural optimization of bis-chloropyrrolo[2, 3-d]pyrimidine with aromatic linker is required to develop novel efficient and non-toxic agent against pancreatic cancer.

Item Type: Article
Uncontrolled Keywords: pyrrolo[2, 3‐d]pyrimidines ; purine ; DFT calculations ; ultrasound ; antiproliferative activity ; pancreatic adenocarcinoma ; apoptosis
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Division of Organic Chemistry and Biochemistry
Project titleProject leaderProject codeProject type
Novi spojevi temeljeni na bioizosterima purina za ispitivanje njihovih antitumorskih i antipatogenih djelovanjaRaić-Malić, SilvanaIP-2018-01-4682HRZZ
Depositing User: Robert Vianello
Date Deposited: 28 Jun 2021 12:21
DOI: 10.3390/molecules26113334

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