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pyrimidine, any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of four carbon atoms and two nitrogen ...

One of two chemical compounds that cells use to make the building blocks of DNA and RNA. Examples of pyrimidines are cytosine, thymine, and uracil. Cytosine and ...

Pyrimidine is a π-deficient heterocycle because of the two electronegative nitrogen atoms. Electron densities at the 2-, 4-, and 6-positions are depleted, making these positions strongly electrophilic. However, electron density at the 5-position is only slightly depleted, and this position retains benzenoid properties.

Pyrimidine is a medicinally privileged scaffold and is incorporated in synthetic pharmaceuticals and bioactive natural products with wide-ranging activities including antitumor, analgesic, antiarrhythmic, antibacterial, antifungal, antimalarial, anticonvulsant, etc. [161].

28.01.2020 · Pyrimidine Definition. Pyrimidines are simple aromatic compounds composed of carbon and nitrogen atoms in a six-membered ring. The term pyrimidine is also used to refer to pyrimidine derivatives, most notably the three nitrogenous bases that, along with the two purines, are the building blocks of both deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. ... One of the three diazines (six-membered heterocyclics with two nitrogen atoms in ...

Here we show that activated pyrimidine ribonucleotides can be formed in a short sequence that bypasses free ribose and the nucleobases, ...

Application. Pyrimidine was used to assess the extent of pyrimidine/purine asymmetry quantitatively. It was also used to study the photoinduced ion chemistry of the halogenated pyrimidines, a class of prototype radiosensitizing molecules. 1-Phenethyl-4-piperidone was used in the preparation of phenethyl derivative of the propanamide.

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has the nitrogen atoms at positions 1 and 3 in the ring. The other diazines are pyrazine (nitrogen atoms at the 1 and 4 positions) and pyridazine (nitrogen atoms at the 1 and 2 positions). In nucleic acids, three types of nucleobases are pyrimidine derivatives: cytosine (C), thymine (T), and uracil (U).

Jan 28, 2020 · Pyrimidine Structure. Pyrimidine is a simple aromatic ring composed of two nitrogen atoms and four carbon atoms, with hydrogen atoms attached to each carbon. The carbon and nitrogen atoms are connected via alternating double and single bonds. This bond structure allows for resonance, or aromaticity, causing the ring to be very stable.

Pyrimidine: A nitrogenous base similar to benzene (a six-membered ring) and includes cytosine, thymine, and uracil as bases used for DNA or RNA.

Pyrimidines are simple aromatic compounds composed of carbon and nitrogen atoms in a six-membered ring. The term pyrimidine is also used to ...

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has the nitrogen atoms at positions 1 and 3 in the ring.

Pyrimidine is one of two classes of heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA: in DNA the pyrimidines are cytosine and thymine, in RNA uracil replaces thymine. Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions.

One of the important specialized pathways of a number of amino acids is the synthesis of purine and pyrimidine nucleotides.

pyrimidine. Wikipedia. Structural formula of pyrimidine. pyrimidine ( plural pyrimidines ) ( organic chemistry) A diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the bases found in DNA and RNA: thymine, uracil and cytosine.

Pyrimidine is a medicinally privileged scaffold and is incorporated in synthetic pharmaceuticals and bioactive natural products with wide-ranging activities including antitumor, analgesic, antiarrhythmic, antibacterial, antifungal, antimalarial, anticonvulsant, etc. [161].

Pyrimidine is one of two classes of heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA: in DNA the pyrimidines are cytosine and thymine, in RNA uracil replaces thymine. Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions.

pyrimidine (plural pyrimidines). (organic chemistry) A diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the ...