Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

didemnin B

A cyclic depsipeptide extracted from the Caribbean tunicate Trididemnum cyanophorum. Didemnin B activates caspase, thereby inducing apoptosis, and prevents eukaryotic elongation factor 2 (eEF-2)-dependent translocation, thereby inhibiting protein synthesis. This agent also has immunosuppressive and antiviral properties.
Check for active clinical trials using this agentView this agent in the NCI Thesaurus
Synonym:didemnin
Chemical structure:1-oxoheptyl]oxy]-2,5-dimethyl-1,3-dioxohexyl]-L-leucyl]- L-prolyl]-N,O-dimethyl-, .phi.-lactone (9CI)
15H-pyrrolol[2,1-f][1,15,4,7,10,20]dioxatetraazacyclotri-cosine, Cyclic Peptide Deriv. (9CI)
L-tyrosine, N-[1-[N-[4-[[3-Hydroxy-4-[[N-[N-[1-(2-hydroxy-1-oxopropyl)- L-prolyl]-N-methyl-L-leucyl]-L-threonyl]amino-5-methyl-1-oxoheptyl]oxy]-2,5-dimethyl-1,3-dioxohexyl]-L-leucyl]- L-prolyl]-N,O-dimethyl-, .phi.-lactone (9CI)
IND number:24505
NSC code:325319
333841
Search NCI's Drug Dictionary
Please enter up to 30 characters for your search