Chemicals and Drugs

Didanosine

A dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by a hydrogen. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. Didanosine is a potent inhibitor of HIV replication, acting as a chain-terminator of viral DNA by binding to reverse transcriptase; ddI is then metabolized to dideoxyadenosine triphosphate, its putative active metabolite.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by a hydrogen. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. Didanosine is a potent inhibitor of HIV replication, acting as a chain-terminator of viral DNA by binding to reverse transcriptase; ddI is then metabolized to dideoxyadenosine triphosphate, its putative active metabolite.

MeSH Record

Classification

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

8 entry terms
  • 2',3'-Dideoxyinosine
  • Dideoxyinosine
  • ddI (Antiviral)
  • 2',3' Dideoxyinosine
  • NSC-612049
  • Videx
  • NSC 612049
  • NSC612049

MeSH Record

Aspects Covered

25 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analogs & derivatives, analysis, antagonists & inhibitors, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, economics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Record

History Note

92; was DIDEOXYINOSINE 1990-91

MeSH Record

Previous Indexing

  • Dideoxynucleosides (1989)
  • Inosine/analogs & derivatives (1987-1989)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Didanosine. Medical Subject Headings (MeSH). 2026. Unique ID D016049. http://id.nlm.nih.gov/mesh/2026/D016049
  2. Didanosine. In: Wikipedia. https://en.wikipedia.org/wiki/Didanosine
  3. Didanosine. In: Wikidata. https://www.wikidata.org/wiki/Q422606