IOCB Prague

Zlatko Janeba Group

Medicinal Chemistry of Nucleotide Analogues
Research Group
Senior
CHEM cluster

About our group

Research projects within the group predominantly focus on the development of inhibitors targeting enzymes involved in nucleoside and nucleotide metabolism. The rational design of novel modified nucleosides and nucleotides, particularly acyclic nucleoside phosphonates and their prodrugs, is based on extensive structure–activity relationship studies previously carried out in our group, and on computational simulations.

Efficient synthetic methodologies employing diverse approaches from modern organic chemistry are developed for the preparation of target compounds. These structures are designed regarding their anticipated antiviral, cytostatic, antiparasitic, and antibacterial activities arising from inhibition of key enzymes. The mechanisms of action of the prepared antimetabolites and their potential biomedical applications are investigated in collaboration with numerous scientific groups worldwide.

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Publications

All publications
The 2-aminopyrimidine ring as a new scaffold for potent MRP1 inhibitors
European Journal of Medicinal Chemistry 300: Part 3 (2026)
Multidrug resistance-associated protein 1 (MRP1) is a key ATP-binding cassette (ABCC1) transporter involved in the efflux of a wide range of substrates, including endogenous molecules and therapeutic drugs. Overexpression of MRP1 in certain cancers plays a significant role in the development of multidrug resistance (MDR), leading to reduced efficacy of chemotherapeutic agents. MRP1 inhibition offers a promising strategy to improve the therapeutic potential of standard-of-care chemotherapy in tumors exhibiting MDR phenotype. In this study, a series of novel polysubstituted 2-aminopyrimidine derivatives have been designed and synthesized to inhibit MRP1 transporter, guided by structure-activity relationship (SAR) studies based on a library of polysubstituted pyrimidines (423 compounds). Among the newly synthesized compounds, six out of eight 4,5,6-trisubstituted 2-aminopyrimidines demonstrated strong inhibition of calcein-AM efflux from MRP1-overexpressing doxorubicin (DOX)-resistant…
Allosteric Inhibitors of SARS-CoV-2 RNA-Dependent RNA Polymerase Based on N,N′-Diphenylurea
ChemMedChem 21 (1): e202500644 (2026)
Structure-Based Drug Design of ADRA2A Antagonists Derived from Yohimbine
Journal of Medicinal Chemistry 67 (12): 10135–10151 (2024)
Recent developments in the chemistry and applications of 9-deazapurines
Advances in Heterocyclic Chemistry, Volume 148 (Eric F.V. Scriven, Christopher A. Ramsden, Eds.), 63–85, Academic Press (2026)