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M9630121.TXT
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1996-02-27
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Document 0121
DOCN M9630121
TI Phenethylthiazolethiourea (PETT) compounds, a new class of HIV-1 reverse
transcriptase inhibitors. 1. Synthesis and basic structure-activity
relationship studies of PETT analogs.
DT 9603
AU Bell FW; Cantrell AS; Hogberg M; Jaskunas SR; Johansson NG; Jordan CL;
Kinnick MD; Lind P; Morin JM Jr; Noreen R; et al; Lilly Research
Laboratories, Eli Lilly and Company, Lilly; Corporate Center,
Indianapolis, Indiana 46285, USA.
SO J Med Chem. 1995 Dec 8;38(25):4929-36. Unique Identifier : AIDSLINE
MED/96105435
AB A novel series of potent specific HIV-1 inhibitory compounds is
described. The lead compound in the series,
N-(2-phenethyl)-N'-(2-thiazolyl)thiourea (1), inhibits HIV-1 RT using
rCdG as the template with an IC50 of 0.9 microM. In MT-4 cells, compound
1 inhibits HIV-1 with an ED50 of 1.3 microM. The 50% cytotoxic dose in
cell culture is > 380 microM. The chemical structure-activity
relationship (SAR) was developed by notionally dividing the lead
compound in four quadrants. The SAR strategy had two phases. The first
phase involved optimization of antiviral activity through independent
variation of quadrants 1-4. The second phase involved the preparation of
hybrid structures combining the best of these substituents. Further SAR
studies and pharmacokinetic considerations led to the identification of
N-(2-pyridyl)-N'-(5-bromo-2-pyridyl)-thiourea (62; LY300046.HCl) as a
candidate for clinical evaluation. LY300046.HCl inhibits HIV-1 RT with
an IC50 of 15 nM and in cell culture has an ED50 of 20 nM.
DE Animal Antiviral Agents/*CHEMICAL SYNTHESIS/PHARMACOLOGY Cell Line
Human HIV-1/*DRUG EFFECTS/ENZYMOLOGY Isothiocyanates/CHEMICAL
SYNTHESIS Rats Reverse Transcriptase Inhibitors/*CHEMICAL
SYNTHESIS/PHARMACOLOGY Structure-Activity Relationship
Thiazoles/CHEMICAL SYNTHESIS/*PHARMACOLOGY Thiourea/*ANALOGS &
DERIVATIVES/CHEMICAL SYNTHESIS/PHARMACOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).