Journal of Medicinal Chemistry p. 3010 - 3014 (1993)
Update date:2022-07-31
Topics:
Smyth, Mark S.
Stefanova, Irena
Hartmann, Frank
Horak, Ivan D.
Osherov, Nir
et al.
The fermentation product lavendustin A (1) is a protein-tyrosine kinase (PTK) inhibitor whose active pharmacophore has previously been shown to reside in the more simplified salicyl-containing benzylamine 2.Amine 2 bears some structural resemblance to two other natural product PTK inhibitors, erbstatin (3) and piceatannol (4).Non-amine containing analogues of 2 were therefore synthesized which incorporated additional aspects of either erbstatin or piceatannol.Examination of these inhibitors in immunoprecipitated p56lck, epidermal growth factor receptor (EGFR), and c-erb B-2/HER 2/neu PTK preparation showed that compound 12 (IC50=60 nM)was one of the most potent p56lek inhibitors reported to date.These results demonstrate that nitrogen is not an essential component of the lavendustin A pharmacophore 2 and that 1,2-diarylethanes and ethenes bearing a salicyl moiety appear to be valuable structural motifs for the constuction of extremely potent PTK inhibitors.
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