TUBERCIDIN (also known as 7-deazaadenosine) is a natural nucleoside analogue. The chemical formula is C10H12N4O4, white to light yellow crystalline powder. TUBERCIDIN can be dissolved in water, but not easily dissolved in organic solvents, such as ethanol and chloroform. It can be stored stably under dry conditions, but it will decompose gradually under wet conditions.
TUBERCIDIN is a nucleoside analogue with a wide range of biological activities, so it has a variety of applications in pharmacology. In this article, we will focus on the use and synthesis of TUBERCIDIN.
1. Antiviral effect:
TUBERCIDIN can interfere with the synthesis process of virus RNA, thus inhibiting the growth and replication of virus. It has antiviral activity against a variety of viruses, including influenza virus, hepatitis B virus, Japanese encephalitis virus, etc. Studies have shown that the inhibitory effect of TUBERCIDIN on virus has nothing to do with its effect on cell growth, so it can be used as a potential drug for virus therapy.
2. Antitumor effect:
TUBERCIDIN can inhibit the proliferation and differentiation of cancer cells and induce tumor cell apoptosis. It has therapeutic effects on a variety of cancers, including lung cancer, breast cancer, ovarian cancer, etc. Studies have shown that the anti-tumor effect of TUBERCIDIN is related to its interference with DNA and can inhibit DNA replication and transcription. It has therapeutic effect on a variety of cancers, including lung cancer, breast cancer, ovarian cancer, etc.
3. Antifungal action:
TUBERCIDIN can prevent the synthesis of fungal DNA and RNA, thus inhibiting the growth and reproduction of fungi. It has antifungal activity against a variety of fungi, including Candida albicans, Aspergillus, etc. Therefore, TUBERCIDIN can be used to treat fungal infections.
4. Immunosuppressive effect:
TUBERCIDIN can inhibit the immune response of T cells and B cells, thus having immunosuppressive effect. It is used to treat autoimmune diseases and organ transplant rejection.
5. Anti-tuberculosis effect:
Tubercidin has antibacterial activity against Mycobacterium tuberculosis and can be used to treat tuberculosis.
In general, TUBERCIDIN has a wide range of biological activities, so it has a variety of applications in pharmacology.
The synthesis route of TUBERCIDIN includes the following steps:
1. Amino protection of 6-aminopurine: 6-aminopurine reacts with the protective agent triethyloxysilane in methyl chloride to produce amino-protected 6-aminopurine.
2. Dehydration: the amino-protected 6-aminopurine reacts with formic acid in acetone, and the 5-position formate of purine ring is formed through dehydration.
3. Chlorination: reaction of 5-position formate and cuprous chloride in acetone to produce 5-position chloropurine.
4. Cyclization: 5-chloropurine reacts with amino-protected deoxyadenosine in DMF under the catalysis of amino group to form TUBERCIDIN.
The above is the synthetic route of TUBERCIDIN. It should be noted that there may be some slight differences in different synthetic routes.
Chemical properties of TUBERCIDIN:
1. Acid-base properties: TUBERCIDIN is a weak base that can form salts, such as the hydrochloride of TUBERCIDIN. Its pH value is usually neutral or slightly alkaline.
2. Oxidation-reduction property: TUBERCIDIN can be oxidized or reduced to different compounds. For example, TUBERCIDIN can be oxidized to TUBERCIDIN-5 '- aldehyde in the presence of acidic oxidant (such as chromic acid).
3. Hydrolysis: TUBERCIDIN can be hydrolyzed in the presence of strong acid or strong base to produce different metabolites. For example, in the presence of strong acids, TUBERCIDIN can be hydrolyzed into adenosine and 7-deazaxanthosine.
4. Absorbance: TUBERCIDIN has a maximum absorption peak in the ultraviolet region, and its maximum absorption wavelength is 260 nm.
5. Reactivity: TUBERCIDIN can participate in many biological reactions. For example, TUBERCIDIN can be modified by enzymes. For example, nucleotide transferase (NTase) can transfer TUBERCIDIN to TUBERCIDIN 5 '- phosphate.
TUBERCIDIN (also known as 7-deazaadenosine) is a nucleoside analogue, which has a variety of reaction properties in organisms, including:
1. Nucleic acid synthesis inhibitor: TUBERCIDIN can inhibit the synthesis of nucleic acid in cells, thus affecting cell proliferation and differentiation. This is because TUBERCIDIN can inhibit the activity of adenosine deaminase and adenosine synthetase, thus preventing the synthesis of adenosine.
2. Antiviral effect: TUBERCIDIN can inhibit the growth and replication of the virus because it can interfere with the RNA synthesis process of the virus.
3. DNA synthesis inhibitor: TUBERCIDIN can inhibit DNA synthesis, thus affecting cell division. This is because TUBERCIDIN can inhibit the activity of DNA polymerase, thus hindering the replication and synthesis of DNA.
4. Anti-tumor effect: TUBERCIDIN is also used as an anti-tumor drug due to its effect on cell proliferation and differentiation. TUBERCIDIN can interfere with the growth and division of cancer cells and induce tumor cell apoptosis.
5. Antifungal effect: TUBERCIDIN can inhibit the growth and reproduction of fungi because it can prevent the synthesis of DNA and RNA in fungi.
TUBERCIDIN has a broad spectrum of biological activities, so it has a variety of applications in pharmacology. The following are the pharmacokinetic characteristics of TUBERCIDIN:
1. Absorption: TUBERCIDIN can be administered orally or intravenously. After oral administration, it can be rapidly absorbed into the blood circulation.
2. Distribution: TUBERCIDIN can be widely distributed in the body, including liver, kidney, muscle, lung, heart and brain.
3. Metabolism: TUBERCIDIN is mainly metabolized in liver and kidney, and its metabolites are 7-denitrogenated adenosine and 7-denitrogenated adenosine. These metabolites can be excreted through the kidney.
4. Excretion: The metabolites of TUBERCIDIN are mainly excreted through the kidney, and a small amount are excreted from the body through feces.
Pharmacodynamics: TUBERCIDIN has a variety of biological activities in vivo, including antiviral, anti-tumor, antifungal and immunosuppressive effects. These effects are mainly achieved by inhibiting the synthesis of nucleic acid and interfering with cell proliferation and differentiation.
Pharmacokinetics: The pharmacokinetic characteristics of TUBERCIDIN are dose-dependent and time-dependent. In vivo, the concentration of TUBERCIDIN increases with the increase of dose, and the rate of metabolism and excretion in vivo also increases. The pharmacodynamic effect of TUBERCIDIN usually needs to last for a certain time, so the dose and administration time of the drug will also affect its pharmacodynamic effect.