Abstract:
:The synthesis and the biological and pharmacological evaluation of several 14-phenylpropoxy analogues of 14-methoxymetopon are described. Most of the new compounds were nonselective and exhibited binding affinities in the subnanomolar or low nanomolar range at opioid receptors mu, kappa, delta), with 14-phenylpropoxymetopon (PPOM; 7) displaying the highest affinity for all three opioid receptor types. The most striking finding of this study is that the derivatives from the novel series of N-methyl-14-phenylpropoxymorphinans acted as extremely powerful antinociceptives with potencies higher than that of 14-methoxymetopon (1) and even etorphine. 14-Phenylpropoxymetopon (PPOM; 7) showed considerably increased potency in the in vivo assays in mice (25-fold in the tail-flick assay, 10-fold in the hot-plate assay, and 2.5-fold in the paraphenylquinone writhing test) when compared to etorphine, while it was equipotent to dihydroetorphine in the hot-plate assay and the paraphenylquinone writhing test and ca. twice as potent in the tail-flick assay than this reference compound. The 3-O-alkyl ethers of PPOM, compounds 6 and 8, showed less potency in in vivo assays, but partly surpassed the potency of the 3-OH analogue 14-methoxymetopon (1).
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Schütz J,Spetea M,Koch M,Aceto MD,Harris LS,Coop A,Schmidhammer Hdoi
10.1021/jm030878bkeywords:
subject
Has Abstractpub_date
2003-09-11 00:00:00pages
4182-7issue
19eissn
0022-2623issn
1520-4804journal_volume
46pub_type
杂志文章abstract::Two separate libraries, prepared via parallel synthesis, were employed to identify low-molecular-weight SH2-targeted ligands for the Lck tyrosine protein kinase. These libraries were constructed to furnish non-amino acid analogues of the (1) Glu-Glu and (2) Ile residues of the Lck SH2 domain peptide ligand Ac-pTyr-Glu...
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