Journal of Medicinal Chemistry p. 1369 - 1379 (1993)
Update date:2022-07-29
Topics:
Doulut, Sylvie
Dubuc, Isabelle
Rodriguez, M.
Vecchini, F.
Fulcrand, H.
et al.
The synthesis of N-<3-<(hydroxyamino)carbonyl>-1-oxo-2(R)-benzylpropyl>-L-isoleucyl-L-leucine (JMV-390-1, 6a), a multipeptidase inhibitor based on the C-terminal sequence common to neurotensin (NT) and neuromedin N (NN), is described.This compound behaves as a full inhibitor of the major NT/NN degrading enzymes in vitro, e.g. endopeptidase 24.16, endopeptidase 24.15, endopeptidase 24.11, and leucine aminopeptidase (type IV-S), in the nanomolar range (IC50's from 30 to 60 nM).Compound 6a was found to increase endogenous recovery of NT and NN from slices of micehypothalamus depolarized with potassium.In various assays commonly used to select analgesics, e.g. hot-plate test, tail-flick test, acetic acid-induced writhing test, in mice, compound 6a proved to be potent when intracerebroventricularly (icv) injected.The analgesic effects observed were totally (hot-plate test) or largely (tail-flick test) reversed by the opioid antagonist naltrexone.Furthermore, icv injection of compound 6a (10 μg/mouse) was found to significantly potentiate the hypothermic effects of NT or NN.
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