3DChem.com - Chemistry, Structures & 3D Molecules a visual and interactive website showcasing the beautiful world of chemistry

Stavudine (Molecule of the Month for April 2007)

2'-3'-didehydro-2'-3'-dideoxythymidine, d4T, Zerit



Stavudine is a nucleoside analog reverse transcriptase inhibitor (NARTI) active against HIV. Stavudine was approved by the U.S. Food and Drug Administration (FDA) in 1994 for adults and in 1996 for pediatric use and again as an extended-release version for once-a-day dosing in 2001. When HIV infects a cell, reverse transcriptase copies the viral single stranded RNA genome into a double-stranded viral DNA. The viral DNA is then integrated into the host chromosomal DNA which then allows host cellular processes, such as transcription and translation to reproduce the virus. RTIs block reverse transcriptase's enzymatic function and prevent completion of synthesis of the double-stranded viral DNA thus preventing HIV from multiplying.

Stavudine is an analog of thymidine. It is phosphorylated by cellular kinases into active triphosphate. Stavudine triphosphate inhibits the HIV reverse transcriptase by competing with natural substrate, thymidine triphosphate. It also causes termination of DNA synthesis by incorporating into it.

Simultaneous use of AZT is not recommended, as it can inhibit the intracellular phosphorylation of stavudine. Other anti-HIV drugs do not possess this property.

Formal Chemical Name (IUPAC)
1-((2R,5S)-5-(hydroxymethyl)-2,5-dihydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione

References

http://en.wikipedia.org/wiki/Stavudine

Picture of Stavudine 3D model

click on the picture of  Stavudine above to interact
with the 3D model of the
Stavudine structure
(this will open a new browser window)

Picture of Stavudine

C10 H12 N2 O4



Update by Karl Harrison
(Molecule of the Month for April 2007 )

Stacks Image 34 All the images on this web site are are made available with a Creative Commons Attribution license and so can be used as long as the attribution © Karl Harrison 3DChem.com is written with the image. High resolution images and illustrations are available on request.