2. • This reaction was 1st introduced by Traube in 1900
• Traube purine synthesis is the most versatile method for introduction of one carbon fragment to
bridge the nitrogen atoms of the amino group C-5 and C-6 of the pyrimidine ring
• Preparation of 4,5-diaminopyrimidines by introduction of the amino group into the 5-position of
4-amino-6-hydroxy- or 4,6-diaminopyrimidines by nitrosation and ammonium sulfide reduction,
followed by ring closure with formic acid or chlorocarbonic ester .
1
TRAUBE PURINE SYNTHESIS
5. Mercaptopurine (6-MP), sold under the brand name Purinethol among.
Mercaptopurine is a medication used for cancer and autoimmune diseases.
Specifically it is used to treat acute lymphocytic leukemia, chronic myeloid
leukemia, Crohn's disease, and ulcerative colitis.
Common side effects include bone marrow suppression, liver toxicity, vomiting, and loss
of appetite.
Other serious side effects include an increased risk of future cancer and pancreatitis.
Those with a genetic deficiency in thiopurine S-methyltransferase are at higher risk of
side effects.
Use in pregnancy may harm the baby.
Mercaptopurine is in the thiopurine and antimetabolite family of medications
MERCAPTOPURINE
8. Medical uses
The main actions of theophylline involve:
• Relaxing bronchial smooth muscle
• Increasing heart muscle contractility and efficiency (positive inotrope)
• Increasing heart rate (positive chronotropic)[2]
• Increasing blood pressure
• Increasing renal blood flow
• Anti-inflammatory effects
• Central nervous system stimulatory effect mainly on the medullary respiratory center.
The main therapeutic uses of theophylline are aimed at:
• Chronic obstructive pulmonary disease (COPD)
• Asthma
• Infant apnea
• Blocks the action of adenosine; an inhibitory neurotransmitter that induces sleep,
contracts the smooth muscles and relaxes the cardiac muscle.
10. Thioguanine, also known as Tioguanine or 6-thioguanine (6-TG)
THIOGUANINE
2-amino-6,7-dihydro-3H-purine-6-thione
MEDICAL USES
• Acute leukemias in both adults and children
• Chronic myelogenous leukemia
• Inflammatory bowel disease, especially ulcerative colitis
• Psoriasis
12. REFERENCES
11/22/2018
• Quin D. L. Tyrele A. J. , Fundamental of heterocyclic
chemistry Page number 225 to 240
• https://scholar.google.com date of search 28/09/2018
• https://en.wikipedia.org date of search 27/09/2018
• https://www.google.com date of search 27/09/2018
• https://www.slideshare.net date of search 27/09/2018
25