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Tyrosine kinase inhibitors. 2. Synthesis of 2,2'-dithiobis(1H-indole-3-alkanamides) and investigation of their inhibitory activity against epidermal growth factor receptor and pp60v-src protein tyrosine kinases.

Abstract：

:A series of amide analogues of the 2,2'-dithiobis(1H-indole-3-alkaonic acid) class of tyrosine kinase inhibitors have been prepared, by reaction of 1H-indole-3-alkanamides (8) with S2Cl2, and separation of the desired disulfides from the initial mixtures of mono-, di-, and trisulfides formed. These amides were evaluated in vitro against epidermal growth factor receptor and pp60v-src protein tyrosine kinases. Inhibitory activity against EGF receptor tyrosine kinase was chain-length dependent, with the propanamides being the most effective. Hydrogen bond donor capabilities in the amide function did not appear to be necessary, with an N-benzylamide being the most potent (IC50 = 0.85 microM). Further substitution on the benzyl ring did not increase potency, and substitution in the alpha-position of the propanamide side chain was acceptable. A water-soluble alpha-NH2 derivative showed good inhibitory activity toward the enzyme, was a potent inhibitor of cell growth in fibroblasts, and selectively inhibited intracellular tyrosine phosphorylation patterns. The nonreceptor kinase pp60v-src was in general much more sensitive than EGF receptor kinase to inhibition by these compounds, but with less pronounced structure-activity relationships.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Thompson AM,Fry DW,Kraker AJ,Denny WA

doi

10.1021/jm00031a009

subject

Has Abstract

pub_date

1994-03-04 00:00:00

pages

598-609

issue

5

eissn

0022-2623

issn

1520-4804

journal_volume

37

pub_type

杂志文章

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