NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

ancitabine hydrochloride
The hydrochloride salt of a cytarabine congener prodrug with antineoplastic activity. Upon administration, ancitabine is slowly hydrolyzed into cytarabine. Subsequently, cytarabine is converted to the triphosphate form within the cell and then competes with cytidine for incorporation into DNA. Because the arabinose sugar sterically hinders the rotation of the molecule within DNA, DNA replication ceases, specifically during the S phase of the cell cycle. Cytarabine agent also inhibits DNA polymerase, resulting in a decrease in DNA replication and repair. Compared to cytarabine, a more prolonged, consistent cytarabine-mediated therapeutic effect may be achieved with ancitabine because of the slow hydrolytic conversion of ancitabine to cytarabine. Check for active clinical trials using this agent. (NCI Thesaurus)

cycloCMP hydrochloride
cyclocytidine HCL
cyclocytidine hydrochloride
Foreign brand name:Ancid
Code name:U-33, 624A
Chemical structure:6H-furo(2',3':4,5)oxazolo(3,2-a)pyrimidine-2-methanol,2,3,3a,9a-tetrahydro-3-hydroxy-6-imino-,(2R(2alpha,3beta,3a beta,9a beta))