The invention relates to the field of organic and medicinal chemistry, and molecular biology, and concerns a method for the preparation of a new class of telomerase-inhibiting compounds, which can be utilized for studying telomerases and catalytic sub-units of telomerases, and reverse transcriptases, and foe studying and treating neoplastic and viral diseases. Telomerase-inhibiting coordination compounds of derivatives of imidazol-4-one are characterized by general formula (1).
