Estavudina
Descripción general
Descripción
Stavudine es un inhibidor de la transcriptasa inversa análogo de nucleósido (ITIAN) utilizado principalmente en el tratamiento de la infección por el virus de la inmunodeficiencia humana (VIH). Fue descrito por primera vez en 1966 y aprobado para su uso en los Estados Unidos en 1994 . Stavudine funciona inhibiendo la actividad de la transcriptasa inversa del VIH-1, una enzima crucial para la replicación del virus .
Mecanismo De Acción
Stavudine inhibe la actividad de la transcriptasa inversa del VIH-1 compitiendo con el sustrato natural desoxiguanosina trifosfato (dGTP) e incorporándose al ADN viral. Esta incorporación da como resultado la terminación de la síntesis de ADN, lo que evita que el virus se replique . Stavudine se fosforila a metabolitos activos que compiten por la incorporación al ADN viral, inhibiendo la enzima de forma competitiva .
Aplicaciones Científicas De Investigación
Stavudine tiene varias aplicaciones de investigación científica, incluyendo:
Química: Utilizado como compuesto modelo para estudiar análogos de nucleósidos y sus propiedades químicas.
Biología: Empleado en la investigación sobre la replicación viral y el desarrollo de fármacos antivirales.
Medicina: Utilizado en estudios clínicos para evaluar su eficacia y seguridad en el tratamiento de la infección por VIH.
Industria: Utilizado en el desarrollo de formulaciones farmacéuticas y sistemas de administración de fármacos.
Análisis Bioquímico
Biochemical Properties
Stavudine is a nucleoside reverse transcriptase inhibitor (NRTI) with activity against Human Immunodeficiency Virus Type 1 (HIV-1) . It is phosphorylated to active metabolites that compete for incorporation into viral DNA . These metabolites inhibit the HIV reverse transcriptase enzyme competitively and act as a chain terminator of DNA synthesis .
Cellular Effects
Stavudine influences cell function by inhibiting the activity of HIV-1 reverse transcriptase (RT), an enzyme crucial for the replication of HIV . By competing with the natural substrate dGTP and by its incorporation into viral DNA, Stavudine prevents the formation of the 5’ to 3’ phosphodiester linkage essential for DNA chain elongation, and therefore, the viral DNA growth is terminated .
Molecular Mechanism
Stavudine exerts its effects at the molecular level by inhibiting the activity of HIV-1 reverse transcriptase (RT) both by competing with the natural substrate dGTP and by its incorporation into viral DNA . The lack of a 3’-OH group in the incorporated nucleoside analogue prevents the formation of the 5’ to 3’ phosphodiester linkage essential for DNA chain elongation, and therefore, the viral DNA growth is terminated .
Metabolic Pathways
Stavudine is involved in the metabolic pathway of HIV replication. It interacts with the enzyme HIV-1 reverse transcriptase (RT) to inhibit the replication of the virus .
Métodos De Preparación
Rutas de Síntesis y Condiciones de Reacción: Stavudine se puede sintetizar mediante varios métodos. Un método común implica la conversión de timidina a stavudine a través de una serie de reacciones químicas. El proceso generalmente incluye el uso de reactivos como trifosgeno y piridina, seguido de pasos de desprotección para producir el producto final .
Métodos de Producción Industrial: En entornos industriales, la stavudine se produce utilizando técnicas de síntesis química a gran escala. El proceso implica múltiples pasos, incluida la protección de grupos funcionales, reacciones selectivas para introducir las modificaciones deseadas y pasos de purificación para obtener stavudine de alta pureza .
Análisis De Reacciones Químicas
Tipos de Reacciones: Stavudine experimenta diversas reacciones químicas, incluyendo:
Oxidación: Stavudine puede oxidarse para formar diferentes metabolitos.
Reducción: Las reacciones de reducción pueden modificar los grupos funcionales en stavudine.
Sustitución: Las reacciones de sustitución pueden introducir nuevos grupos funcionales en la molécula de stavudine.
Reactivos y Condiciones Comunes:
Oxidación: Los agentes oxidantes comunes incluyen permanganato de potasio y peróxido de hidrógeno.
Reducción: Se utilizan agentes reductores como el borohidruro de sodio.
Sustitución: Se emplean reactivos como haluros de alquilo y nucleófilos.
Principales Productos Formados: Los principales productos formados a partir de estas reacciones incluyen varios metabolitos y derivados modificados de stavudine, que pueden tener diferentes propiedades farmacológicas .
Comparación Con Compuestos Similares
Stavudine es similar a otros inhibidores de la transcriptasa inversa análogos de nucleósidos como la didanosina y la zalcitabina. tiene propiedades únicas que lo distinguen de estos compuestos:
Didanosina: También un ITIAN, pero difiere en su estructura química y farmacocinética.
Zalcitabina: Otro ITIAN con un mecanismo de acción y un perfil de efectos secundarios diferentes.
Lista de Compuestos Similares:
- Didanosina
- Zalcitabina
- Zidovudina
La estructura química y el mecanismo de acción únicos de Stavudine lo convierten en un compuesto valioso en el tratamiento de la infección por VIH y un tema de investigación científica continua.
Propiedades
IUPAC Name |
1-[(2R,5S)-5-(hydroxymethyl)-2,5-dihydrofuran-2-yl]-5-methylpyrimidine-2,4-dione | |
---|---|---|
Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
InChI |
InChI=1S/C10H12N2O4/c1-6-4-12(10(15)11-9(6)14)8-3-2-7(5-13)16-8/h2-4,7-8,13H,5H2,1H3,(H,11,14,15)/t7-,8+/m0/s1 | |
Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
InChI Key |
XNKLLVCARDGLGL-JGVFFNPUSA-N | |
Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
Canonical SMILES |
CC1=CN(C(=O)NC1=O)C2C=CC(O2)CO | |
Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
Isomeric SMILES |
CC1=CN(C(=O)NC1=O)[C@H]2C=C[C@H](O2)CO | |
Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
Molecular Formula |
C10H12N2O4 | |
Record name | 2',3'-DIDEHYDRO-3'-DEOXYTHYMIDINE | |
Source | CAMEO Chemicals | |
URL | https://cameochemicals.noaa.gov/chemical/20175 | |
Description | CAMEO Chemicals is a chemical database designed for people who are involved in hazardous material incident response and planning. CAMEO Chemicals contains a library with thousands of datasheets containing response-related information and recommendations for hazardous materials that are commonly transported, used, or stored in the United States. CAMEO Chemicals was developed by the National Oceanic and Atmospheric Administration's Office of Response and Restoration in partnership with the Environmental Protection Agency's Office of Emergency Management. | |
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Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
DSSTOX Substance ID |
DTXSID1023819 | |
Record name | Stavudine | |
Source | EPA DSSTox | |
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Description | DSSTox provides a high quality public chemistry resource for supporting improved predictive toxicology. | |
Molecular Weight |
224.21 g/mol | |
Source | PubChem | |
URL | https://pubchem.ncbi.nlm.nih.gov | |
Description | Data deposited in or computed by PubChem | |
Physical Description |
2',3'-didehydro-3'-deoxythymidine appears as white crystalline solid or powder. Odorless. (NTP, 1992), Solid | |
Record name | 2',3'-DIDEHYDRO-3'-DEOXYTHYMIDINE | |
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URL | https://cameochemicals.noaa.gov/chemical/20175 | |
Description | CAMEO Chemicals is a chemical database designed for people who are involved in hazardous material incident response and planning. CAMEO Chemicals contains a library with thousands of datasheets containing response-related information and recommendations for hazardous materials that are commonly transported, used, or stored in the United States. CAMEO Chemicals was developed by the National Oceanic and Atmospheric Administration's Office of Response and Restoration in partnership with the Environmental Protection Agency's Office of Emergency Management. | |
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Record name | Stavudine | |
Source | Human Metabolome Database (HMDB) | |
URL | http://www.hmdb.ca/metabolites/HMDB0014787 | |
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Solubility |
50 to 100 mg/mL at 70 °F (NTP, 1992), 5-10 g/100 mL at 21 °C, 30 mg/mL in propylene glycol at 23 °C, In water, 83 mg/mL at 23 °C, 4.05e+01 g/L | |
Record name | 2',3'-DIDEHYDRO-3'-DEOXYTHYMIDINE | |
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Record name | Stavudine | |
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URL | https://www.drugbank.ca/drugs/DB00649 | |
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Record name | STAVUDINE | |
Source | Hazardous Substances Data Bank (HSDB) | |
URL | https://pubchem.ncbi.nlm.nih.gov/source/hsdb/7338 | |
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Record name | Stavudine | |
Source | Human Metabolome Database (HMDB) | |
URL | http://www.hmdb.ca/metabolites/HMDB0014787 | |
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Vapor Pressure |
9.5X10-12 mm Hg at 25 °C /Estimated/ | |
Record name | STAVUDINE | |
Source | Hazardous Substances Data Bank (HSDB) | |
URL | https://pubchem.ncbi.nlm.nih.gov/source/hsdb/7338 | |
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Mechanism of Action |
Stavudine inhibits the activity of HIV-1 reverse transcriptase (RT) both by competing with the natural substrate dGTP and by its incorporation into viral DNA., Enzymatic conversion of stavudine to d4T-triphosphate appears to be complex, involving several steps and enzymes. Stavudine is first converted to dideoxydidehydrothymidine-5'-monophosphate (d4T-monophosphate) by thymidine kinase. Subsequently, d4T-monophosphate is converted to dideoxydidehydrothymidine-5'-diphosphate (d4T-diphosphate), and then to d4T-triphosphate, presumably by the same cellular kinases involved in the metabolism of zidovudine. ... d4T-Triphosphate is a structural analog of thymidine triphosphate, the natural substrate for viral RNA-directed DNA polymerase. ... d4T-triphosphate appears to compete with thymidine triphosphate for viral RNA-directed DNA polymerase and incorporation into viral DNA. Following incorporation of d4T-triphosphate into the viral DNA chain instead of thymidine triphosphate, synthesis is terminated prematurely because the absence of the 3'-hydroxy group on the drug prevents further 5' to 3' phosphodiester linkages., Stavudine is phosphorylated by cellular kinases to the active metabolite stavudine triphosphate. Stavudine triphosphate inhibits the activity of HIV reverse transcriptase both by competing with the natural substrate deoxythymidine triphosphate (Ki =0.0083 to 0.032 uM), and by its incorporation into viral DNA causing a termination of DNA chain elongation because stavudine lacks the essential 3'-OH group. Stavudine triphosphate inhibits cellular DNA polymerase beta and gamma, and markedly reduces the synthesis of mitochondrial DNA., d4T-Triphosphate can bind to and inhibit some mammalian cellular DNA polymerases, particularly beta- and gamma-polymerases, in vitro, and markedly reduce the synthesis of mitochondrial DNA. ...gamma-polymerase, an enzyme involved in mitochondrial DNA synthesis, is the polymerase most susceptible to inhibition. However, d4T-triphosphate and other dideoxynucleoside triphosphates appear to have much greater affinity for viral RNA-directed DNA polymerase than for mammalian DNA polymerases. ... Inhibition of beta- and gamma-polymerases by these drugs may account, to some extent, for the toxic effects associated with stavudine and other nucleosides in humans. | |
Record name | Stavudine | |
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Record name | STAVUDINE | |
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Color/Form |
White to off white crystalline solid, Colorless granular solid from ethanol/benzene | |
CAS No. |
3056-17-5 | |
Record name | 2',3'-DIDEHYDRO-3'-DEOXYTHYMIDINE | |
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URL | https://cameochemicals.noaa.gov/chemical/20175 | |
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Record name | Stavudine | |
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Record name | Stavudine [USAN:USP:INN:BAN] | |
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Record name | Stavudine | |
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Record name | Stavudine | |
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Record name | 1-((2R, 5S)-5-(hydroxymethyl)-2,5-dihydro-2-furanyl)-5-methyl-2,4(1H, 3H)-pyrimidinedione | |
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Record name | STAVUDINE | |
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Record name | Stavudine | |
Source | Human Metabolome Database (HMDB) | |
URL | http://www.hmdb.ca/metabolites/HMDB0014787 | |
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Melting Point |
318 to 320 °F (NTP, 1992), 159-160 °C, 165-166 °C, 159 - 160 °C | |
Record name | 2',3'-DIDEHYDRO-3'-DEOXYTHYMIDINE | |
Source | CAMEO Chemicals | |
URL | https://cameochemicals.noaa.gov/chemical/20175 | |
Description | CAMEO Chemicals is a chemical database designed for people who are involved in hazardous material incident response and planning. CAMEO Chemicals contains a library with thousands of datasheets containing response-related information and recommendations for hazardous materials that are commonly transported, used, or stored in the United States. CAMEO Chemicals was developed by the National Oceanic and Atmospheric Administration's Office of Response and Restoration in partnership with the Environmental Protection Agency's Office of Emergency Management. | |
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Record name | Stavudine | |
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URL | http://www.hmdb.ca/metabolites/HMDB0014787 | |
Description | The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body. | |
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Retrosynthesis Analysis
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Strategy Settings
Precursor scoring | Relevance Heuristic |
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Min. plausibility | 0.01 |
Model | Template_relevance |
Template Set | Pistachio/Bkms_metabolic/Pistachio_ringbreaker/Reaxys/Reaxys_biocatalysis |
Top-N result to add to graph | 6 |
Feasible Synthetic Routes
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