Synthesis of novel triplet drugs with 1,3,5-trioxazatriquinane skeletons and their pharmacologies. Part 2: Synthesis of novel triplet drugs with the epoxymethano structure (capped homotriplet)

Capped homotriplet KNT-123 with high selectivity for the μ receptor over the κ receptor induced profound antinociception; the effect was 11-fold more potent than that of morphine in the acetic acid writhing assay. An improved synthetic method for triplet drugs with the 1,3,5-trioxazatriquinane skele...

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Veröffentlicht in:Bioorganic & medicinal chemistry letters 2011-10, Vol.21 (20), p.6198-6202
Hauptverfasser: Nagase, Hiroshi, Koyano, Koji, Wada, Naohisa, Hirayama, Shigeto, Watanabe, Akio, Nemoto, Toru, Nakajima, Mayumi, Nakao, Kaoru, Mochizuki, Hidenori, Fujii, Hideaki
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container_issue 20
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container_title Bioorganic & medicinal chemistry letters
container_volume 21
creator Nagase, Hiroshi
Koyano, Koji
Wada, Naohisa
Hirayama, Shigeto
Watanabe, Akio
Nemoto, Toru
Nakajima, Mayumi
Nakao, Kaoru
Mochizuki, Hidenori
Fujii, Hideaki
description Capped homotriplet KNT-123 with high selectivity for the μ receptor over the κ receptor induced profound antinociception; the effect was 11-fold more potent than that of morphine in the acetic acid writhing assay. An improved synthetic method for triplet drugs with the 1,3,5-trioxazatriquinane skeleton was developed that used p-toluenesulfonylmethyl isocyanide (TosMIC) instead of 1,3-dithiane. Using the improved method, we synthesized compounds with two identical pharmacophore units and an epoxymethano group, that is, capped homotriplets. Among the synthesized capped homotriplets, KNT-123 showed high selectivity for the μ receptor over the κ receptor, and the μ selectivity was the highest among the reported μ selective nonpeptide ligands. KNT-123 administered subcutaneously induced a dose-dependent analgesic effect in the acetic acid writhing assay, and its potency was 11-fold more potent than that of morphine. KNT-123 may serve as a useful tool for the study of the pharmacological actions mediated specifically via the μ receptor.
doi_str_mv 10.1016/j.bmcl.2011.07.065
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Among the synthesized capped homotriplets, KNT-123 showed high selectivity for the μ receptor over the κ receptor, and the μ selectivity was the highest among the reported μ selective nonpeptide ligands. KNT-123 administered subcutaneously induced a dose-dependent analgesic effect in the acetic acid writhing assay, and its potency was 11-fold more potent than that of morphine. KNT-123 may serve as a useful tool for the study of the pharmacological actions mediated specifically via the μ receptor.</abstract><cop>Amsterdam</cop><pub>Elsevier Ltd</pub><pmid>21889335</pmid><doi>10.1016/j.bmcl.2011.07.065</doi><tpages>5</tpages></addata></record>
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subjects acetic acid
analgesic effect
Analgesics
Analgesics, Opioid - chemical synthesis
Analgesics, Opioid - chemistry
Analgesics, Opioid - pharmacology
Analgesics, Opioid - therapeutic use
Animals
Antinociception
Biological and medical sciences
Bridged-Ring Compounds - chemical synthesis
Bridged-Ring Compounds - chemistry
Bridged-Ring Compounds - pharmacology
Bridged-Ring Compounds - therapeutic use
Cap structure
Capped homotriplet
Medical sciences
Mice
Models, Molecular
morphine
Neuropharmacology
Nitriles - chemical synthesis
Nitriles - chemistry
Nitriles - pharmacology
Nitriles - therapeutic use
Nociception - drug effects
Nociceptive Pain - drug therapy
Opioid
p-Toluenesulfonylmethyl isocyanide
Pain Measurement - drug effects
Pharmacology. Drug treatments
Receptors, Opioid, kappa - metabolism
Receptors, Opioid, mu - metabolism
Sesquiterpenes - chemical synthesis
Sesquiterpenes - chemistry
Sesquiterpenes - pharmacology
Sesquiterpenes - therapeutic use
Tosyl Compounds - chemical synthesis
Tosyl Compounds - chemistry
Tosyl Compounds - pharmacology
Tosyl Compounds - therapeutic use
title Synthesis of novel triplet drugs with 1,3,5-trioxazatriquinane skeletons and their pharmacologies. Part 2: Synthesis of novel triplet drugs with the epoxymethano structure (capped homotriplet)
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