Title:The Effect of Whole Blood and Bone Marrow with the Addition of
Pyrimidine-2,4(1h,3h)-dione Thietanyl Derivatives on Free Radical
Oxidation
Volume: 30
Issue: 17
Author(s): Svetlana Meshcheryakova*, Aliya Kayumova, Yang Kang, Alina Shumadalova, Yulia Vinogradova, Dinislam Khuzin, Klara Ziyakaeva, Olga Kiseleva, Irina Gabdulkhakova, Ozal Beylerli, Ilgiz Gareev, Albert Sufianov, Galina Sufianova, Aamir Ahmad, Guang Yang and Zidan Guo*
Affiliation:
- Department of General Chemistry, Bashkir State Medical University, Ufa, Russian Federation
- Outpatient Department of Harbin Medical University, Harbin Medical University, Habin,
China
Keywords:
Pyrimidine, thietane, thietanylation, alkylation, free radical oxidation, antioxidant, chemiluminescence.
Abstract:
Background: It is relevant to study the general patterns and identify non-specific mechanisms
of body protective and adaptive reactions violation, which can lead to the various pathological processes
and develop principles for the correction of these disorders. One of the therapy and prevention directions
is the search for new medicines. In recent years, new derivatives of pyrimidine bases have been synthesized
and studied. Pyrimidine-based medicines have a membrane-stabilizing and immunomodulatory effect
and can normalize metabolic disorders and increase the oxidative activity of leukocytes. Disruption
of the free radical oxidation processes, the generation of reactive oxygen species and lipid peroxidation,
including in whole blood and bone marrow, has gained importance in recent years.
Methods: Each reaction was monitored by thin layer chromatography. 1H, 13C, and 15N NMR spectra
were recorded (chemical shifts were expressed as δ-values). We studied the effect of 6-methyl-3-(thietan-
3-yl)pyrimidine-2,4(1H,3H)-dione on the generation of reactive oxygen species (ROS) in the whole
blood and bone marrow using the study of whole blood spontaneous and stimulated chemiluminescence
(CL). CL methods make it possible to quickly and easily assess the studied material (whole blood, bone
marrow) effect on free radical oxidation. Using CL methods, it is possible to reveal the presence of
medicines' pro- or antioxidant properties, opening up new possibilities in the search for substances with
antioxidant properties and comparing their activity.
Results: Alkylation of 6-methylpyrimidine-2,4(1H,3H)-dione by 2-chloromethylthiirane in protic solvents
in the presence of alkali leads to the formation of an N-thietane derivative. NMR spectroscopy
showed that 6-methylpyrimidine-2,4(1H,3H)-dione was alkylated at position 3. The oxidation reactions
of N-(thietan-3-yl)pyrimidine-2,4(1H,3H)-dione were studied, and it was determined that, depending on
the excess of the oxidizing agent and the duration of the process, N-(1-oxothietan-3-yl)- or N-(1,1--
dioxothietan-3-yl)pyrimidine-2,4(1H,3H)-diones were formed. The effects of free radical oxidation processes
of new biologically active pyrimidine-2,4(1H,3H)-diones were studied.
Conclusion: New pyrimidine-2,4(1H,3H)-diones increase the general adaptive capabilities of the body
and have protective effects in extreme conditions.