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1996-02-26
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Document 0424
DOCN M9620424
TI Hydroxylated aromatic inhibitors of HIV-1 integrase.
DT 9602
AU Burke TR Jr; Fesen MR; Mazumder A; Wang J; Carothers AM; Grunberger D;
Driscoll J; Kohn K; Pommier Y; Laboratories of Medicinal Chemistry and
Molecular Pharmacology,; National Cancer Institute, National Institutes
of Health,; Bethesda, Maryland 20892, USA.
SO J Med Chem. 1995 Oct 13;38(21):4171-8. Unique Identifier : AIDSLINE
MED/96028186
AB Efficient replication of HIV-1 requires integration of a DNA copy of the
viral genome into a chromosome of the host cell. Integration is
catalyzed by the viral integrase, and we have previously reported that
phenolic moieties in compounds such as flavones, caffeic acid phenethyl
ester (CAPE, 2), and curcumin confer inhibitory activity against HIV-1
integrase. We now extend these findings by performing a comprehensive
structure-activity relationship using CAPE analogues. Approximately 30
compounds have been prepared as HIV integrase inhibitors based on the
structural lead provided by CAPE, which has previously been shown to
exhibit an IC50 value of 7 microM in our integration assay. These
analogues were designed to examine specific features of the parent CAPE
structure which may be important for activity. Among the features
examined for their effects on inhibitory potency were ring substitution,
side chain length and composition, and phenyl ring conformational
orientation. In an assay which measured the combined effect of two
sequential steps, dinucleotide cleavage and strand transfer, several
analogues have IC50 values for 3'-processing and strand transfer lower
than those of CAPE. Inhibition of strand transfer was assayed using both
blunt-ended and precleaved DNA substrates. Disintegration using an
integrase mutant lacking the N-terminal zinc finger and C-terminal
DNA-binding domains was also inhibited by these analogues, suggesting
that the binding site for these compounds resides in the central
catalytic core. Several CAPE analogues were also tested for selective
activity against transformed cells. Taken together, these results
suggest that the development of novel antiviral agents for the treatment
of acquired immune deficiency syndrome can be based upon inhibition of
HIV-1 integrase.
DE Animal Antiviral Agents/*CHEMICAL SYNTHESIS Apoptosis/DRUG EFFECTS
Base Sequence Binding Sites Caffeic Acids/*CHEMISTRY/PHARMACOLOGY
Cell Line, Transformed DNA/CHEMISTRY/METABOLISM DNA
Nucleotidyltransferases/*ANTAGONISTS & INHIB Enzyme
Inhibitors/*CHEMICAL SYNTHESIS Human Hydroxylation HIV/DRUG EFFECTS
Molecular Conformation Molecular Sequence Data Molecular Structure
Nuclear Magnetic Resonance Phenylethyl Alcohol/*ANALOGS &
DERIVATIVES/CHEMISTRY/PHARMACOLOGY Rats Structure-Activity
Relationship Support, Non-U.S. Gov't Tumor Cells, Cultured Zinc
Fingers JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).