Abstract:A number of benzoates derived from 4-amino-5-chloro-2-methoxybenzoic acid and substituted 1-piperidineethanol were synthesized and found to be potent 5-HT4 receptor agonists in the electrically-stimulated myenteric plexus and longitudinal muscle of the guinea pig ileum and the rat esophagus muscle. Monosubstitution of the piperidine ring with Me, OH, NH-Ac, or CONH2 groups gave compounds equipotent to 7a (ML 10302), a 5-HT4 receptor agonist previously reported to have nanomolar affinity. 7a,k were as potent as… Show more
“…ML10302 was shown recently to bind to 5-HT 4 receptors in the rat striatum with a nanomolar affinity [15,16]. Moreover, ML 10302 mimics the effect of 5-HT, with an EC50 of ~4-6 nM, on the relaxation of rat esophagus as well as on the electrically evoked contraction of the guinea pig ileum [15].…”
“…ML10302 was shown recently to bind to 5-HT 4 receptors in the rat striatum with a nanomolar affinity [15,16]. Moreover, ML 10302 mimics the effect of 5-HT, with an EC50 of ~4-6 nM, on the relaxation of rat esophagus as well as on the electrically evoked contraction of the guinea pig ileum [15].…”
“…As shown in Table I, they were more efficacious on 5-HT 4 D100(3.32)A receptors than on WT. Another benzoate derivative, reported to be either a highly specific 5-HT 4 antagonist (ML 10375) (23) or an inverse agonist on the 5-HT 4 receptor (24), was indeed an antagonist of WT 5-HT 4 receptors (Fig. 3C), which became a full agonist on the 5-HT 4 D100(3.32)A mutant (EC 50 ϭ 1 Ϯ 0.6 nM) (Fig.…”
Section: Mutant 5-ht 4 Receptors For Gene Therapy 700mentioning
“…pre-treatment with the selective 5-HT 4 [ML-10302 (Yang et al, 1997)], 5-HT 6 [EMD-386088 (Mattsson et al, 2005)] and 5-HT 7 [LP-12 (Leopoldo et al, 2007)] receptor agonists increased 0.5% formalin-induced secondary allodynia and hyperalgesia. Furthermore, i.t.…”
Section: Involvement Of 5-ht 4/6/7 Receptors In Development Of Formalmentioning
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