Site-specific enzymatic activation of the anti-HIV agent stampidine.
Stampidine (STAMP, DDE-113, HI-113, N-[p-(4-bromophenyl)-2',3'-didehydro-3'-deoxy-5'-thymidylyl]-L-alanine methyl ester, CAS 217178-62-6) and two stampidine analogs containing ethyl or t-butyl groups were synthesized and their rates of enzymatic activation were compared side-by-side. Enzymes such as lipase, esterase and protease did not hydrolyze the butyl substituted STAMP analog. These experimental results show that the site of attack for the enzymatic hydrolysis of STAMP is the ester side chain of the molecule.
Parker Hughes Institute, Roseville, Minnesota, USA.
Taracad K
TK
Venkatachalam
Sanjive
S
Qazi
Fatih M
FM
Uckun
D000468:Alkalies; D019380:Anti-HIV Agents / Q000378:metabolism* / Q000494:pharmacology; D001711:Biotransformation; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002851:Chromatography, High Pressure Liquid; D054306:Dideoxynucleotides; D004798:Enzymes / Q000378:metabolism; D004950:Esterases / Q000737:chemistry; D006801:Humans; D006868:Hydrolysis; D007700:Kinetics; D008049:Lipase / Q000737:chemistry; D010447:Peptide Hydrolases / Q000737:chemistry; D018119:Stavudine / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D013938:Thymidine Monophosphate / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology
D000468:Alkalies; D019380:Anti-HIV Agents; D054306:Dideoxynucleotides; D004798:Enzymes; C472384:stampidine; D013938:Thymidine Monophosphate; D018119:Stavudine; D004950:Esterases; D008049:Lipase; D010447:Peptide Hydrolases