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Ishikawa K, Mochizuki Y, Hirayama S, Nemoto T, Nagai K, Itoh K, Fujii H. Synthesis and evaluation of novel opioid ligands with a C-homomorphinan skeleton. Bioorg Med Chem 2016; 24:2199-205. [DOI: 10.1016/j.bmc.2016.03.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 03/24/2016] [Accepted: 03/25/2016] [Indexed: 10/22/2022]
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2
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Nagase H, Kutsumura N. Synthesis of novel triplets with a 1,3,5-trioxazatriquinane skeleton and their pharmacologies for opioid receptors. Arch Pharm (Weinheim) 2015; 348:375-89. [PMID: 25964204 DOI: 10.1002/ardp.201500031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 03/10/2015] [Accepted: 03/20/2015] [Indexed: 11/05/2022]
Abstract
We designed and synthesized novel triplet molecules with 1,3,5-trioxazatriquinane skeletons. One class comprises double-capped triplets with a morphinan skeleton; the other class comprises simple phenol derivatives with phenethylamine moieties. One compound with m-phenolic hydroxyl group, called SYK-146, is a highly selective, potent agonist for the κ receptor, with activity nearly equivalent to that of U-50488H. The o-phenolic isomer of SYK-146, called SYK-524, showed potent but non-selective agonistic activity for the opioid receptors. We also added several simple phenol derivatives to a library of compounds that target opioid receptors, and they showed high hit rates for the receptor. This library might also be expected to show high hit rates for other receptors.
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Affiliation(s)
- Hiroshi Nagase
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Noriki Kutsumura
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
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Watanabe Y, Kitazawa S, Fujii H, Nemoto T, Hirayama S, Iwai T, Gouda H, Hirono S, Nagasea H. Design, synthesis, and structure–activity relationship of novel opioid κ receptor selective agonists: α-Iminoamide derivatives with an azabicyclo[2.2.2]octene skeleton. Bioorg Med Chem Lett 2014; 24:4980-3. [DOI: 10.1016/j.bmcl.2014.09.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 09/08/2014] [Accepted: 09/10/2014] [Indexed: 11/26/2022]
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4
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Hirayama S, Wada N, Nemoto T, Iwai T, Fujii H, Nagase H. Synthesis and Pharmacology of a Novel κ Opioid Receptor (KOR) Agonist with a 1,3,5-Trioxazatriquinane Skeleton. ACS Med Chem Lett 2014; 5:868-72. [PMID: 25147605 DOI: 10.1021/ml5000542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 06/26/2014] [Indexed: 11/30/2022] Open
Abstract
We designed and synthesized the 1,3,5-trioxazatriquinane derivatives with m-hydroxyphenyl groups. These compounds include the phenethylamine structure within them, which is a common structure observed in morphinan derivatives like morphine. Among the synthesized compounds, (-)-8c with two m-hydroxyphenyl groups selectively bound and exerted full agonist activity toward the κ opioid receptor (KOR). Subcutaneously administered (-)-8c exhibited significant antinociceptive effects via the KOR in a dose-dependent manner. These results suggest the emergence of a novel class of KOR agonist.
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Affiliation(s)
- Shigeto Hirayama
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Naohisa Wada
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toru Nemoto
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Takashi Iwai
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hideaki Fujii
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hiroshi Nagase
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Nemoto T, Ida Y, Iihara Y, Nakajima R, Hirayama S, Iwai T, Fujii H, Nagase H. The most effective influence of 17-(3-ethoxypropyl) substituent on the binding affinity and the agonistic activity in KNT-127 derivatives, δ opioid receptor agonists. Bioorg Med Chem 2013; 21:7628-47. [PMID: 24262888 DOI: 10.1016/j.bmc.2013.10.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 10/21/2013] [Accepted: 10/22/2013] [Indexed: 10/26/2022]
Abstract
We investigated the structure-activity relationship of KNT-127 (opioid δ agonist) derivatives with various 17-substituents which are different in length and size. The 17-substituent in KNT-127 derivatives exerted a great influence on the affinity and agonistic activity for the δ receptor. While the compounds with electron-donating 17-substituents showed higher affinities for the δ receptor than those with electron-withdrawing groups, KNT-127 derivatives with 17-fluoroalkyl groups (the high electron-withdrawing groups) showed high selectivities for the δ receptor among evaluated compounds. In addition, the basicity of nitrogen as well as the structure of the 17-N substituent such as the length and configuration at an asymmetric carbon atom contributed to agonist properties for the δ receptor. Thus, the analog with a 17-(3-ethoxypropyl) group showed the best selectively and potent agonistic activity for the δ receptor among KNT-127 derivatives. These findings should be useful for designing novel δ selective agonists.
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Affiliation(s)
- Toru Nemoto
- School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Wada N, Fujii H, Koyano K, Hirayama S, Iwai T, Nemoto T, Nagase H. Synthesis of novel triplet drugs with 1,3,5-trioxazatriquinane skeletons and their pharmacologies. 3: synthesis of novel triplet drugs with the bis(epoxymethano) or bis(dimethylepoxymethano) structure (double-capped triplet). Bioorg Med Chem Lett 2012; 22:7551-4. [PMID: 23131341 DOI: 10.1016/j.bmcl.2012.10.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 09/29/2012] [Accepted: 10/04/2012] [Indexed: 11/27/2022]
Abstract
Novel double-capped triplet drugs, which have one pharmacophore unit and two epoxymethano or dimethylepoxymethano structures (termed cap or diMe-cap structures, respectively) were synthesized. Key intermediate oxazoline 16 derived from acetone enabled the effective synthesis of double-capped triplets. SYK-134 (7a) and SYK-135 (8a) with N-cyclopropylmethyl substituent and cap structures showed selectivities for the κ opioid receptor. On the other hand, the N-Me series exhibited selectivities for the μ opioid receptor. The double-capped triplet drugs with diMe-cap structures preferred the μ receptor independently of their N-substituents. SYK-385 (19b), one of the μ-selective double-capped triplet drugs, showed the highest selectivity for the μ receptor among the reported μ-selective nonpeptide ligands.
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Affiliation(s)
- Naohisa Wada
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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The effect of 17-N substituents on the activity of the opioid κ receptor in nalfurafine derivatives. Bioorg Med Chem Lett 2012. [PMID: 23200250 DOI: 10.1016/j.bmcl.2012.10.100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have previously reported the essential structure of the opioid κ receptor agonist nalfurafine hydrochloride (TRK-820) for binding to the κ receptor. In the course of this study, we focused on the effect of the substituent at 17-N in nalfurafine on the binding affinity for the κ receptor. The exchange of the 17-N substituent in nalfurafine from cyclopropylmethyl to fluoro-substituted alkyl groups, which are strong electron withdrawing substituents, almost completely diminished the binding affinities for the μ and δ opioid receptors, but the binding affinity for the κ receptor was still maintained. As a result, nalfurafine derivatives with 17-fluoro-substituted alkyl groups showed higher selectivities for the κ receptor than did nalfurafine itself. With regard to the κ agonistic activities, the conversion of the 17-N substituent in nalfurafine from cyclopropylmethyl to fluoro-substituted alkyl groups led to the gradual decrease of the agonistic activities in the order corresponding to their binding affinities for the κ receptor. In contrast, the derivative with the bulky 17-isobutyl group showed lower affinity and agonistic activity for the κ receptor than the derivatives with the smaller functional groups. This research suggested that both the electronic property and the steric characteristics of the 17-N substituent would have a great influence on the binding property for the κ receptor.
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Synthesis of quinolinomorphinan derivatives as highly selective δ opioid receptor ligands. Bioorg Med Chem 2012; 20:5810-31. [DOI: 10.1016/j.bmc.2012.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 08/06/2012] [Accepted: 08/06/2012] [Indexed: 11/17/2022]
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Ida Y, Nemoto T, Hirayama S, Fujii H, Osa Y, Imai M, Nakamura T, Kanemasa T, Kato A, Nagase H. Synthesis of quinolinomorphinan-4-ol derivatives as δ opioid receptor agonists. Bioorg Med Chem 2012; 20:949-61. [DOI: 10.1016/j.bmc.2011.11.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 11/22/2011] [Accepted: 11/22/2011] [Indexed: 11/29/2022]
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Tavakol H, Esfandyari M, Taheri S, Heydari A. Investigation of structure, vibrational and NMR spectra of oxycodone and naltrexone: a combined experimental and theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:574-582. [PMID: 21549636 DOI: 10.1016/j.saa.2011.03.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Accepted: 03/14/2011] [Indexed: 05/30/2023]
Abstract
In this work, two important opioid antagonists, naltrexone and oxycodone, were prepared from thebaine and were characterized by IR, (1)H NMR and (13)C NMR spectroscopy. Moreover, computational NMR and IR parameters were obtained using density functional theory (DFT) at B3LYP/6-311++G** level of theory. Complete NMR and vibrational assignment were carried out using the observed and calculated spectra. The IR frequencies and NMR chemical shifts, determined experimentally, were compared with those obtained theoretically from DFT calculations, showed good agreements. The RMS errors observed between experimental and calculated data for the IR absorptions are 85 and 105 cm(-1), for the (1)H NMR peaks are 0.87 and 0.17 ppm and for those of (13)C NMR are 5.6 and 5.3 ppm, respectively for naltrexone and oxycodone.
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Affiliation(s)
- Hossein Tavakol
- Chemistry Department, Faculty of Science, University of Zabol, Mofatteh street, Zabol, Iran.
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Yamamoto N, Fujii H, Imaide S, Hirayama S, Nemoto T, Inokoshi J, Tomoda H, Nagase H. Synthesis of (−)-Homogalanthamine from Naltrexone. J Org Chem 2011; 76:2257-60. [DOI: 10.1021/jo1022487] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoshi Yamamoto
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hideaki Fujii
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Satomi Imaide
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Shigeto Hirayama
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toru Nemoto
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Junji Inokoshi
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hiroshi Tomoda
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hiroshi Nagase
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Nagase H, Nemoto T, Matsubara A, Saito M, Yamamoto N, Osa Y, Hirayama S, Nakajima M, Nakao K, Mochizuki H, Fujii H. Design and synthesis of KNT-127, a δ-opioid receptor agonist effective by systemic administration. Bioorg Med Chem Lett 2010; 20:6302-5. [PMID: 20850307 DOI: 10.1016/j.bmcl.2010.08.083] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 08/17/2010] [Accepted: 08/18/2010] [Indexed: 10/19/2022]
Abstract
We have reported previously the novel δ-opioid agonist, SN-28, which was more potent in in vitro assays than the prototype δ-agonists, TAN-67 and SNC-80. However, when administered by subcutaneous injection, this compound showed no analgesic effect at dosages greater than 30mg/kg in the acetic acid writhing test. We speculated that SN-28 was not effective in the test because the presence of the charged ammonium groups prevented its penetration through the blood-brain barrier. On the basis of our proposal, we designed the novel δ-agonist, KNT-127, which was effective with systemic administration.
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Affiliation(s)
- Hiroshi Nagase
- School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan.
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Nagase H, Imaide S, Tomatsu M, Hirayama S, Nemoto T, Sato N, Nakajima M, Nakao K, Mochizuki H, Gouda H, Hirono S, Fujii H. Investigation of Beckett–Casy model 3: Synthesis of novel naltrexone derivatives with contracted and expanded D-rings and their pharmacology. Bioorg Med Chem Lett 2010; 20:3801-4. [DOI: 10.1016/j.bmcl.2010.04.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Revised: 04/05/2010] [Accepted: 04/12/2010] [Indexed: 10/19/2022]
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Nagase H, Imaide S, Tomatsu M, Nemoto T, Nakajima M, Nakao K, Mochizuki H, Fujii H. Investigation of Beckett–Casy model 2: Synthesis of novel 15–16 nornaltrexone derivatives and their pharmacology. Bioorg Med Chem Lett 2010; 20:3726-9. [DOI: 10.1016/j.bmcl.2010.04.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 03/25/2010] [Accepted: 04/17/2010] [Indexed: 11/29/2022]
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15
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Investigation of Beckett–Casy model 1: Synthesis of novel 16,17-seco-naltrexone derivatives and their pharmacology. Bioorg Med Chem Lett 2010; 20:1055-8. [DOI: 10.1016/j.bmcl.2009.12.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Accepted: 12/09/2009] [Indexed: 11/15/2022]
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17
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Abstract
This paper is the 31st consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2008 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration and thermoregulation (Section 16); and immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd, Flushing, NY 11367, United States.
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Fujii H, Ogawa R, Ohata K, Nemoto T, Nakajima M, Hasebe K, Mochizuki H, Nagase H. Aerobic oxidation of indolomorphinan without the 4,5-epoxy bridge and subsequent rearrangement of the oxidation product to spiroindolinonyl-C-normorphinan derivative. Bioorg Med Chem 2009; 17:5983-8. [DOI: 10.1016/j.bmc.2009.06.067] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Revised: 06/25/2009] [Accepted: 06/26/2009] [Indexed: 10/20/2022]
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Nagase H, Osa Y, Nemoto T, Fujii H, Imai M, Nakamura T, Kanemasa T, Kato A, Gouda H, Hirono S. Design and synthesis of novel delta opioid receptor agonists and their pharmacologies. Bioorg Med Chem Lett 2009; 19:2792-5. [DOI: 10.1016/j.bmcl.2009.03.099] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 03/14/2009] [Accepted: 03/23/2009] [Indexed: 10/21/2022]
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Smith JA, Molesworth PP, Ryan JH. Chapter 7: Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70044-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Nagase H, Yamamoto N, Nemoto T, Yoza K, Kamiya K, Hirono S, Momen S, Izumimoto N, Hasebe K, Mochizuki H, Fujii H. Synthesis of a stable iminium salt and propellane derivatives. J Org Chem 2008; 73:8093-6. [PMID: 18811203 DOI: 10.1021/jo801276z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The treatment of morphinan 1 with NaH and MsCl provided very stable iminium salt 7 possessing propellane skeleton. One of the synthesized iminium salts 7, isobutyl derivative 7b, was crystallized and its structure was determined by X-ray crystallography. The natural bond orbital analysis suggested that the stability of the iminium should result from the stereoelectronic effect (hyperconjugation) attributed to their own structures.
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Affiliation(s)
- Hiroshi Nagase
- School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan.
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