Which of the following sulfonamide contain pyrimidine ring?
Which of the following sulfonamide contain pyrimidine ring?
Among the sulfonamide, sulfadiazine, sulfamerazine and sulfadimidine are pyrimidine analogues of sulfa drugs which are more superior clinically antibacterial agent and are also used in the treatment of acute UT infections, cerebrerospinal meningitis and for patients allergic to penicillins 40.
Which drugs contain pyrimidine ring?
Pyrimidines
| Drug | Drug Description |
|---|---|
| Idoxuridine | A pyrimidine analog antiviral used for the treatment of viral eye infections, including herpes simplex keratitis. |
| Talbutal | For use as a sedative and hypnotic. |
| Pentobarbital | A barbiturate drug used to induce sleep, cause sedation, and control certain types of seizures. |
How many rings are there in pyrimidine derivatives?
Six-membered Rings with Two or More Heteroatoms and Fused Carbocyclic Derivatives.
What is pyrimidine ring?
The pyrimidine ring is an aromatic heterocycle of two nitrogen and four carbon atoms. The pyrimidine ring has a planar structure, this helps in stacking interactions with purine bases. Pyrimidine pairs with complementary purine bases by hydrogen bonding, for example, thymine with adenine, and cytosine with guanine.
What biological molecules contain pyrimidine rings?
Pyrimidines are important building blocks for DNA and RNA. These include thymine, uracil, and cytosine.
Which drug is pyrimidine antagonist?
Pyrimidine antagonists, for example, 5-fluorouracil (5-FU), cytarabine (ara-C) and gemcitabine (dFdC), are widely used in chemotherapy regimes for colorectal, breast, head and neck, non-small-cell lung cancer, pancreatic cancer and leukaemias.
How many atoms are in a pyrimidine ring?
Purines are the other family of nitrogenous bases. Pyrimidines can be identified by their structure: six atoms in the shape of a ring. This ring is known as a pyrimidine ring.
What does guanine stand for?
purine base
Definition of guanine : a purine base C5H5N5O that codes genetic information in the polynucleotide chain of DNA or RNA — compare adenine, cytosine, thymine, uracil.
How are pyrimidine nucleotides oxidised?
Pyrimidine nucleosides such as thymidine, uridine or cytidine are oxidized readily at 0° by osmium tetroxide in ammonium chloride buffer. There is virtually no oxidation in bicarbonate buffer of similar pH. They occur faster in the latter buffer and, under suitable conditions, cytidine is a major product.