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Zarin MKZ, Dehaen W, Salehi P, Asl AAB. Synthesis and Modification of Morphine and Codeine, Leading to Diverse Libraries with Improved Pain Relief Properties. Pharmaceutics 2023; 15:1779. [PMID: 37376226 DOI: 10.3390/pharmaceutics15061779] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Morphine and codeine, two of the most common opioids, are widely used in the clinic for different types of pain. Morphine is one of the most potent agonists for the μ-opioid receptor, leading to the strongest analgesic effect. However, due to their association with serious side effects such as respiratory depression, constriction, euphoria, and addiction, it is necessary for derivatives of morphine and codeine to be developed to overcome such drawbacks. The development of analgesics based on the opiate structure that can be safe, orally active, and non-addictive is one of the important fields in medicinal chemistry. Over the years, morphine and codeine have undergone many structural changes. The biological investigation of semi-synthetic derivatives of both morphine and codeine, especially morphine, shows that studies on these structures are still significant for the development of potent opioid antagonists and agonists. In this review, we summarize several decade-long attempts to synthesize new analogues of morphine and codeine. Our summary placed a focus on synthetic derivatives derived from ring A (positions 1, 2, and 3), ring C (position 6), and N-17 moiety.
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Affiliation(s)
- Mona Kamelan Zargar Zarin
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113, Iran
| | - Wim Dehaen
- Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Peyman Salehi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113, Iran
| | - Amir Ata Bahmani Asl
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113, Iran
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2
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Diels–Alder Adducts of Morphinan-6,8-Dienes and Their Transformations. Molecules 2022; 27:molecules27092863. [PMID: 35566212 PMCID: PMC9102320 DOI: 10.3390/molecules27092863] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 02/04/2023] Open
Abstract
6,14-ethenomorphinans are semisynthetic opiate derivatives containing an ethylene bridge between positions 6 and 14 in ring-C of the morphine skeleton that imparts a rigid molecular structure. These compounds represent an important family of opioid receptor ligands in which the 6,14-etheno bridged structural motif originates from a [4 + 2] cycloaddition of morphinan-6,8-dienes with dienophiles. Certain 6,14-ethenomorphinans having extremely high affinity for opioid receptors are often non-selective for opioid receptor subtypes, but this view is now undergoing some revision. The agonist 20R-etorphine and 20R-dihydroetorphine are several thousand times more potent analgesics than morphine, whereas diprenorphine is a high-affinity non-selective antagonist. The partial agonist buprenorphine is used as an analgesic in the management of post-operative pain or in substitution therapy for opiate addiction, sometimes in combination with the non-selective antagonist naloxone. In the context of the current opioid crisis, we communicated a summary of several decades of work toward generating opioid analgesics with lesser side effects or abuse potential. Our summary placed a focus on Diels–Alder reactions of morphinan-6,8-dienes and subsequent transformations of the cycloadducts. We also summarized the pharmacological aspects of radiolabeled 6,14-ethenomorphinans used in molecular imaging of opioid receptors.
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3
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Alaraidh IA, Okla MK, Alamri SA, AL‐ghamdi AA, Soufan WH, Allam AA, Fouda MMG, Gaffer HE. Synthesis of Bis‐(2‐thiazolyl)amine Analogues and Evaluation of Their Antibacterial, Antioxidant and Cytotoxic Activities. ChemistrySelect 2019. [DOI: 10.1002/slct.201902272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ibrahim A. Alaraidh
- Department of Botany and MicrobiologyCollege of ScienceKing Saud University, P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Mohammad K. Okla
- Department of Botany and MicrobiologyCollege of ScienceKing Saud University, P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Saudi A. Alamri
- Department of Botany and MicrobiologyCollege of ScienceKing Saud University, P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Abdullah A. AL‐ghamdi
- Department of Botany and MicrobiologyCollege of ScienceKing Saud University, P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Walid H. Soufan
- College of AgricultureKing Saud University P.O. Box 2455 Riyadh 11451 Saudia Arabia
| | - Ahmed A. Allam
- Department of ZoologyFaculty of ScienceBeni-Suef University Beni-Suef 65211 Egypt
| | - Moustafa M. G. Fouda
- Pretreatment and Finishing of Cellulosic-based Fibers DepartmentTextile Industries Research DivisionNational Research Centre 33 El-Buhouth Street, Dokki Cairo 12622 Egypt
| | - Hatem E. Gaffer
- DyeingPrinting and Auxiliaries DepartmentTextile Industries Research DivisionNational Research Centre 33 El-Buhouth Street, Dokki Cairo 12622 Egypt
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4
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Abdel‐Latif E, Almatari AS, Abd‐ElGhani GE. Synthesis and Antibacterial Evaluation of Some New Thiazole‐Based Polyheterocyclic Ring Systems. J Heterocycl Chem 2019; 56:1978-1985. [DOI: 10.1002/jhet.3577] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/24/2019] [Indexed: 09/02/2023]
Affiliation(s)
- Ehab Abdel‐Latif
- Department of Chemistry, Faculty of ScienceUniversity of Mansoura Mansoura 35516 Egypt
| | - Altaf S. Almatari
- Department of Chemistry, Faculty of ScienceUniversity of Mansoura Mansoura 35516 Egypt
| | - Ghada E. Abd‐ElGhani
- Department of Chemistry, Faculty of ScienceUniversity of Mansoura Mansoura 35516 Egypt
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5
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Benzomorphan scaffold for opioid analgesics and pharmacological tools development: A comprehensive review. Eur J Med Chem 2018; 148:410-422. [PMID: 29477074 DOI: 10.1016/j.ejmech.2018.02.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 02/12/2018] [Accepted: 02/13/2018] [Indexed: 01/21/2023]
Abstract
Benzomorphan, derived by morphine skeleton simplification, has been the subject of exploration in medicinal chemistry for the development of new drugs and pharmacological tools to explore opioid pharmacology in vitro and in vivo. Building upon these evidences, the design and synthesis of benzomorphan-based compounds, appropriately modified at the basic nitrogen and/or the phenolic hydroxyl (8-OH) group, represent a valid and versatile strategy to obtain analgesics. In this review, to improve the body of information in this field, we report structure activity-relationships (SARs) of benzomorphan-based compounds analysing data literature of last 25 years. Collectively, SARs data highlighted that the benzomorphan nucleus represents a template in the achievement of a specific functional profile, by modifying N-substituent or 8-OH group.
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6
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Abstract
The opioid receptor system plays a major role in the regulation of mood, reward, and pain. The opioid receptors therefore make attractive targets for the treatment of many different conditions, including pain, depression, and addiction. However, stimulation or blockade of any one opioid receptor type often leads to on-target adverse effects that limit the clinical utility of a selective opioid agonist or antagonist. Literature precedent suggests that the opioid receptors do not act in isolation and that interactions among the opioid receptors and between the opioid receptors and other proteins may produce clinically useful targets. Multifunctional ligands have the potential to elicit desired outcomes with reduced adverse effects by allowing for the activation of specific receptor conformations and/or signaling pathways promoted as a result of receptor oligomerization or crosstalk. In this chapter, we describe several classes of multifunctional ligands that interact with at least one opioid receptor. These ligands have been designed for biochemical exploration and the treatment of a wide variety of conditions, including multiple kinds of pain, depression, anxiety, addiction, and gastrointestinal disorders. The structures, pharmacological utility, and therapeutic drawbacks of these classes of ligands are discussed.
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Affiliation(s)
- Jessica P Anand
- Department of Pharmacology, Medical School and the Edward F. Domino Research Center, University of Michigan, Ann Arbor, MI, USA.
| | - Deanna Montgomery
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
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7
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Patil R, Chavan JU, Beldar AG. Synthesis of aminothiazoles: polymer-supported approaches. RSC Adv 2017. [DOI: 10.1039/c7ra00790f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aminothiazoles and their derivatives are of immense biological importance and have been consistently synthesizedviavarious methods.
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Affiliation(s)
- R. V. Patil
- PSGVPM’S Arts, Science & Commerce College
- India
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8
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Multitarget opioid ligands in pain relief: New players in an old game. Eur J Med Chem 2015; 108:211-228. [PMID: 26656913 DOI: 10.1016/j.ejmech.2015.11.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/23/2015] [Accepted: 11/18/2015] [Indexed: 11/21/2022]
Abstract
Still nowadays pain is one of the most common disabling conditions and yet it remains too often unsolved. Analgesic opioid drugs, and mainly MOR agonists such as morphine, are broadly employed for pain management. MOR activation, however, has been seen to cause not only analgesia but also undesired side effects. A potential pain treatment option is represented by the simultaneous targeting of different opioid receptors. In fact, ligands possessing multitarget capabilities led to an improved pharmacological fingerprint. This review focuses on the examination of multitarget opioid ligands which have been distinguished in peptide and non-peptide and further listed as bivalent and bifunctional ligands. Moreover, the potential of these compounds, both as analgesic drugs and pharmacological tools to explore heteromer receptors, has been stressed.
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9
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Thiazole: a promising heterocycle for the development of potent CNS active agents. Eur J Med Chem 2014; 92:1-34. [PMID: 25544146 DOI: 10.1016/j.ejmech.2014.12.031] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/10/2014] [Accepted: 12/18/2014] [Indexed: 01/15/2023]
Abstract
Thiazole is a valuable scaffold in the field of medicinal chemistry and has accounted to display a variety of biological activities. Thiazole and its derivatives have attracted continuing interest to design various novel CNS active agents. In the past few decades, thiazoles have been widely used to develop a variety of therapeutic agents against numerous CNS targets. Thiazole containing drug molecules are currently being used in treatment of various CNS disorders and a number of thiazole derivatives are also presently in clinical trials. A lot of research has been carried out on thiazole and their analogues, which has proved their efficacy to overcome several CNS disorders in rodent as well as primate models. The aim of present review is to highlights diverse CNS activities displayed by thiazole and their derivatives. SAR of this nucleus has also been well discussed. This review covers the recent updates present in literature and will surely provide a greater insight for the designing and development of potent thiazole based CNS active agents in future.
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10
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Li F, Cheng K, Antoline JFG, Iyer MR, Matyas GR, Torres OB, Jalah R, Beck Z, Alving CR, Parrish DA, Deschamps JR, Jacobson AE, Rice KC. Synthesis and immunological effects of heroin vaccines. Org Biomol Chem 2014; 12:7211-32. [PMID: 24995943 PMCID: PMC4146676 DOI: 10.1039/c4ob01053a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three haptens have been synthesized with linkers for attachment to carrier macromolecules at either the piperidino-nitrogen or via an introduced 3-amino group. Two of the haptens, with a 2-oxopropyl functionality at either C6, or at both the C3 and C6 positions on the 4,5-epoxymorphinan framework, as well as the third hapten (DiAmHap) with diamido moieties at both the C3 and C6 positions, should be much more stable in solution, or in vivo in a vaccine, than a hapten with an ester in one of those positions, as found in many heroin-based haptens. A "classical" opioid synthetic scheme enabled the formation of a 3-amino-4,5-epoxymorphinan which could not be obtained using palladium chemistry. Our vaccines are aimed at the reduction of the abuse of heroin and, as well, at the reduction of the effects of its predominant metabolites, 6-acetylmorphine and morphine. One of the haptens, DiAmHap, has given interesting results in a heroin vaccine and is clearly more suited for the purpose than the other two haptens.
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Affiliation(s)
- Fuying Li
- Drug Design and Synthesis Section, Chemical Biology Research Branch, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services, 9800 Medical Center Drive, Bethesda, MD 20892, USA.
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11
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Pharmacological characterization and therapeutic potential for the treatment of opioid abuse with ATPM-ET, an N-ethyl substituted aminothiazolomorphinan with κ agonist and μ agonist/antagonist activity. Eur J Pharmacol 2014; 740:455-63. [DOI: 10.1016/j.ejphar.2014.06.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/20/2014] [Accepted: 06/23/2014] [Indexed: 02/01/2023]
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12
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Bidlack JM. Mixed κ/μ partial opioid agonists as potential treatments for cocaine dependence. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2014; 69:387-418. [PMID: 24484983 DOI: 10.1016/b978-0-12-420118-7.00010-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cocaine use activates the dopamine reward pathway, leading to the reinforcing effects of dopamine. There is no FDA-approved medication for treating cocaine dependence. Opioid agonists and antagonists have been approved for treating opioid and alcohol dependence. Agonists that activate the μ opioid receptor increase dopamine levels in the nucleus accumbens, while μ receptor antagonists decrease dopamine levels by blocking the effects of endogenous opioid peptides. Activation of the κ opioid receptor decreases dopamine levels and leads to dysphoria. In contrast, inhibition of the κ opioid receptor decreases dopamine levels in the nucleus accumbens. Antagonists acting at the κ receptor reduce stress-mediated behaviors and anxiety. Mixed partial μ/κ agonists have the potential of striking a balance between dopamine levels and attenuating relapse to cocaine. The pharmacological properties of mixed μ/κ opioid receptor agonists will be discussed and results from clinical and preclinical studies will be presented. Results from studies with some of the classical benzomorphans and morphinans will be presented as they lay the foundation for structure-activity relationships. Recent results with other partial opioid agonists, including buprenorphine derivatives and the mixed μ/κ peptide CJ-15,208, will be discussed. The behavioral effects of the mixed μ/κ MCL-741, an aminothiazolomorphinan, in attenuating cocaine-induced locomotor activity will be presented. While not a mixed μ/κ opioid, results obtained with GSK1521498, a μ receptor inverse agonist, will be discussed. Preclinical strategies and successes will lay the groundwork for the further development of mixed μ/κ opioid receptor agonists to treat cocaine dependence.
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Affiliation(s)
- Jean M Bidlack
- School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA.
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13
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Bauman VT, Shul’ts EE, Kononchuk VV, Bagryanskaya IY, Shakirov MM, Tolstikov GA. Synthetic transformations of isoquinoline alkaloids. 1-alkynyl-3,6-dimethoxy-N-methyl-4,5α-epoxy-6,18-endoethenobenzo[i]isomorphinans and their transformations. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2013. [DOI: 10.1134/s1070428013100175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Provencher BA, Sromek AW, Li W, Russell S, Chartoff E, Knapp BI, Bidlack JM, Neumeyer JL. Synthesis and pharmacological evaluation of aminothiazolomorphinans at the mu and kappa opioid receptors. J Med Chem 2013; 56:8872-8. [PMID: 24107104 DOI: 10.1021/jm401290y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Previous studies with aminothiazolomorphinans suggested that this class of opioid ligands may be useful as a potential pharmacotherapeutic to decrease drug abuse. Novel aminothiazole derivatives of cyclorphan were prepared to evaluate a series of aminothiazolomorphinans with varying pharmacological properties at the κ opioid receptor (KOR) and μ opioid receptor (MOR). This study was focused on exploring the regioisomeric analogs with the aminothiazole on the C-ring of the morphinan skeleton. Receptor binding and [(35)S]GTPγS binding assays were used to characterize the affinity and pharmacological properties of the aminothiazolomorphinans. Intracranial self-stimulation (ICSS) was used to compare the effects of a representative aminothiazolomorphinan with the morphinan mixed-KOR/MOR agonist butorphan (MCL-101) on brain-stimulation reward.
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Affiliation(s)
- Brian A Provencher
- Alcohol & Drug Abuse Research Center, ‡Mailman Research Center, McLean Hospital, Harvard Medical School , 115 Mill Street, Belmont, Massachusetts 02478, United States
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15
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Jalani HB, Pandya AN, Pandya DH, Sharma JA, Sudarsanam V, Vasu KK. An efficient one-pot synthesis of functionally diverse 2-aminothiazoles from isothiocyanates, amidines/guanidines and halomethylenes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.122] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Ding C, Zhang Y, Chen H, Yang Z, Wild C, Chu L, Liu H, Shen Q, Zhou J. Novel nitrogen-enriched oridonin analogues with thiazole-fused A-ring: protecting group-free synthesis, enhanced anticancer profile, and improved aqueous solubility. J Med Chem 2013; 56:5048-58. [PMID: 23746196 PMCID: PMC3712786 DOI: 10.1021/jm400367n] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Oridonin (1), a complex ent-kaurane diterpenoid isolated from the traditional Chinese herb Isodon rubescens , has demonstrated great potential in the treatment of various human cancers due to its unique and safe anticancer pharmacological profile. Nevertheless, the clinical development of oridonin for cancer therapy has been hampered by its relatively moderate potency, limited aqueous solubility, and poor bioavailability. Herein, we report the concise synthesis of a series of novel nitrogen-enriched oridonin derivatives with thiazole-fused A-ring through an efficient protecting group-free synthetic strategy. Most of them, including compounds 7-11, 13, and 14, exhibited potent antiproliferative effects against breast, pancreatic, and prostate cancer cells with low micromolar to submicromolar IC50 values as well as markedly enhanced aqueous solubility. These new analogues obtained by rationally modifying the natural product have been demonstrated not only to significantly induce the apoptosis and suppress growth of triple-negative MDA-MB-231 breast cancer both in vitro and in vivo but also effective against drug-resistant ER-positive MCF-7 clones.
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Affiliation(s)
- Chunyong Ding
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Yusong Zhang
- Department of Oncology, the Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
- Department of Clinical Cancer Prevention, Division of Cancer Prevention and Population Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, United States
| | - Haijun Chen
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Zhengduo Yang
- Department of Clinical Cancer Prevention, Division of Cancer Prevention and Population Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, United States
| | - Christopher Wild
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Lili Chu
- Department of Clinical Cancer Prevention, Division of Cancer Prevention and Population Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, United States
| | - Huiling Liu
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Qiang Shen
- Department of Clinical Cancer Prevention, Division of Cancer Prevention and Population Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, United States
| | - Jia Zhou
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas 77555, United States
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Samimi HA, Mohammadi S. New one-pot approach to regio-synthesis of substituted 2-aminothiazoles from the corresponding keto-aziridines. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0276-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Doak BC, Morton CJ, Simpson JS, Scanlon MJ. Design and Evaluation of the Performance of an NMR Screening Fragment Library. Aust J Chem 2013. [DOI: 10.1071/ch13280] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The design of a suitable library is an essential prerequisite to establish a fragment-based screening capability. Several pharmaceutical companies have described their approaches to establishing fragment libraries; however there are few detailed reports of both design and analysis of performance for a fragment library maintained in an academic setting. Here we report our efforts towards the design of a fragment library for nuclear magnetic resonance spectroscopy-based screening, demonstrate the performance of the library through analysis of 14 screens, and present a comparison to previously reported fragment libraries.
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Neumeyer JL, Zhang B, Zhang T, Sromek AW, Knapp BI, Cohen DJ, Bidlack JM. Synthesis, binding affinity, and functional in vitro activity of 3-benzylaminomorphinan and 3-benzylaminomorphine ligands at opioid receptors. J Med Chem 2012; 55:3878-90. [PMID: 22439881 PMCID: PMC3375359 DOI: 10.1021/jm3001086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of 3-benzylamino-3-desoxymorphinan (I) and 3-benzylamino-3-desoxymorphine (II) derivatives were synthesized and evaluated for their binding affinities, and functional activity data are presented at MOR, KOR, and DOR. Some of these ligands were found to have high binding affinity at MOR and KOR and displayed increased selectivity at MOR over KOR and DOR compared to butorphan or cyclorphan. The most selective compound, 3-(3'-hydroxybenzyl)amino-17-methylmorphinan (4g) (24-fold MOR to KOR and 1700-fold MOR to DOR) also showed high binding affinity (0.42 nM to MOR) and was a full agonist in the [(35)S]GTPγS binding assay. 2-(3'-Hydroxybenzyl)amino-17-cyclopropylmethylmorphinan (17) was found to be a KOR-selective ligand (150-fold over MOR and >10000-fold over the DORs). Most 3-benzylaminomorphinan derivatives were partial agonists at MOR and full agonists at KOR in the [(35)S]GTPγS binding assay.
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Affiliation(s)
- John L Neumeyer
- Alcohol and Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, Massachusetts 02478-9106, USA.
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20
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Chaubet G, Maillard LT, Martinez J, Masurier N. A tandem aza-Friedel–Crafts reaction/Hantzsch cyclization: a simple procedure to access polysubstituted 2-amino-1,3-thiazoles. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.090] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Zhang B, Zhang T, Sromek AW, Scrimale T, Bidlack JM, Neumeyer JL. Synthesis and binding affinity of novel mono- and bivalent morphinan ligands for κ, μ, and δ opioid receptors. Bioorg Med Chem 2011; 19:2808-16. [PMID: 21482470 DOI: 10.1016/j.bmc.2011.03.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 03/16/2011] [Accepted: 03/22/2011] [Indexed: 11/25/2022]
Abstract
A novel series of homo- and heterodimeric ligands containing κ/μ agonist and μ agonist/antagonist pharmacophores joined by a 10-carbon ester linker chain were synthesized and evaluated for their in vitro binding affinity at κ, μ, and δ opioid receptors, and their functional activities were determined at κ and μ receptors in [(35)S]GTPγS functional assays. Most of these compounds had high binding affinity at μ and κ receptors (K(i) values less than 1nM). Compound 15b, which contains butorphan (1) at one end of linking chain and butorphanol (5) at the other end, was the most potent ligand in this series with binding affinity K(i) values of 0.089nM at the μ receptor and 0.073nM at the κ receptor. All of the morphinan-derived ligands were found to be partial κ and μ agonists; ATPM-derived ligands 12 and 11 were found to be full κ agonists and partial μ agonists.
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Affiliation(s)
- Bin Zhang
- Alcohol & Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478-9106, USA
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22
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Zhang T, Yan Z, Sromek A, Knapp BI, Scrimale T, Bidlack JM, Neumeyer JL. Aminothiazolomorphinans with mixed κ and μ opioid activity. J Med Chem 2011; 54:1903-13. [PMID: 21351746 DOI: 10.1021/jm101542c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of N-substituted and N'-substituted aminothiazole-derived morphinans (5) were synthesized for expanding the structure-activity relationships of aminothiazolo-morphinans. Although their affinities were somewhat lower than their prototype aminothiazolo-N-cyclopropylmorphinan (3), 3-aminothiazole derivatives of cyclorphan (1) containing a primary amino group displayed high affinity and selectivity at the κ and μ opioid receptors. [(35)S]GTPγS binding assays showed that the aminothiazolomorphinans were κ agonists with mixed agonist and antagonist activity at the μ opioid receptor. These novel N'-monosubstituted aminothiazole-derived morphinans may be valuable for the development of drug abuse medications.
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Affiliation(s)
- Tangzhi Zhang
- Alcohol & Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, Massachusetts 02478, United States
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Sun JF, Wang YH, Li FY, Lu G, Tao YM, Cheng Y, Chen J, Xu XJ, Chi ZQ, Neumeyer JL, Zhang A, Liu JG. Effects of ATPM-ET, a novel κ agonist with partial μ activity, on physical dependence and behavior sensitization in mice. Acta Pharmacol Sin 2010; 31:1547-52. [PMID: 21102484 DOI: 10.1038/aps.2010.164] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
AIM to investigate the effects of ATPM-ET [(-)-3-N-Ethylaminothiazolo [5,4-b]-N-cyclopropylmethylmorphinan hydrochloride] on physical dependence and behavioral sensitization to morphine in mice. METHODS the pharmacological profile of ATPM-ET was characterized using competitive binding and GTPγS binding assays. We then examined the antinociceptive effects of ATPM-ET in the hot plate test. Morphine dependence assay and behavioral sensitization assay were used to determine the effect of ATPM-ET on physical dependence and behavior sensitization to morphine in mice. RESULTS the binding assay indicated that ATPM-ET ATPM-ET exhibited a high affinity to both κ- and μ-opioid receptors with K(i) values of 0.15 nmol/L and 4.7 nmol/L, respectively, indicating it was a full κ-opioid receptor agonist and a partial μ-opioid receptor agonist. In the hot plate test, ATPM-ET produced a dose-dependent antinociceptive effect, with an ED(50) value of 2.68 (2.34-3.07) mg/kg. Administration of ATPM-ET (1 and 2 mg/kg, sc) prior to naloxone (3.0 mg/kg, sc) injection significantly inhibited withdrawal jumping of mice. In addition, ATPM-ET (1 and 2 mg/kg, sc) also showed a trend toward decreasing morphine withdrawal-induced weight loss. ATPM-ET (1.5 and 3 mg/kg, sc) 15 min before the morphine challenge significantly inhibited the morphine-induced behavior sensitization (P<0.05). CONCLUSION ATPM-ET may have potential as a therapeutic agent for the treatment of drug abuse.
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Paronis CA, Bergman J. Buprenorphine and opioid antagonism, tolerance, and naltrexone-precipitated withdrawal. J Pharmacol Exp Ther 2010; 336:488-95. [PMID: 21051498 DOI: 10.1124/jpet.110.173823] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The dual antagonist effects of the mixed-action μ-opioid partial agonist/κ-opioid antagonist buprenorphine have not been previously compared in behavioral studies, and it is unknown whether they are comparably modified by chronic exposure. To address this question, the dose-related effects of levorphanol, trans-(-)-3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl] benzeneacetamide (U50,488), heroin, and naltrexone on food-maintained behavior in rhesus monkeys were studied after acute and chronic treatment with buprenorphine (0.3 mg/kg/day). In acute studies, the effects of levorphanol and U50,488 were determined at differing times after buprenorphine (0.003-10.0 mg/kg i.m.). Results show that buprenorphine produced similar, dose-dependent rightward shifts of the levorphanol and U50,488 dose-response curves that persisted for ≥ 24 h after doses larger than 0.1 mg/kg buprenorphine. During chronic treatment with buprenorphine, the effects of levorphanol, U50,488, heroin, and naltrexone were similarly determined at differing times (10 min to 48 h) after intramuscular injection. Overall, results show that buprenorphine produced comparable 3- to 10-fold rightward shifts in the U50,488 dose-response curve under both acute and chronic conditions, but that chronic buprenorphine produced larger (10- to ≥ 30-fold) rightward shifts in the heroin dose-effect function than observed acutely. Naltrexone decreased operant responding in buprenorphine-treated monkeys, and the position of the naltrexone dose-effect curve shifted increasingly to the left as the time after daily buprenorphine treatment increased from 10 min to 48 h. These results suggest that the μ-antagonist, but not the κ-antagonist, effects of buprenorphine are augmented during chronic treatment. In addition, the leftward shift of the naltrexone dose-effect function suggests that daily administration of 0.3 mg/kg buprenorphine is adequate to produce opioid dependence.
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Affiliation(s)
- Carol A Paronis
- Preclinical Pharmacology Laboratory, McLean Hospital/Harvard Medical School, Belmont, Massachusetts 02115, USA.
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Affiliation(s)
- Sergey Arutyunyan
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port Saint Lucie, Florida 34987, USA
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26
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Synthesis of morphinans with diversely functionalized benzoxazole moieties. MONATSHEFTE FUR CHEMIE 2010. [DOI: 10.1007/s00706-010-0380-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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28
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Genady AR. Synthesis and characterization of novel color chemosensors based on azo dyes for possible application in opioid pharmacology. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Decker M, Si YG, Knapp BI, Bidlack JM, Neumeyer JL. Synthesis and opioid receptor binding affinities of 2-substituted and 3-aminomorphinans: ligands for mu, kappa, and delta opioid receptors. J Med Chem 2010; 53:402-18. [PMID: 19928862 PMCID: PMC2814335 DOI: 10.1021/jm9013482] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The phenolic group of the potent mu and kappa opioid morphinan agonist/antagonists cyclorphan and butorphan was replaced by phenylamino and benzylamino groups including compounds with para-substituents in the benzene ring. These compounds are highly potent mu and kappa ligands, e.g., p-methoxyphenylaminocyclorphan showing a K(i) of 0.026 nM at the mu receptor and a K(i) of 0.03 nM at the kappa receptor. Phenyl carbamates and phenylureas were synthesized and investigated. Selective o-formylation of butorphan and levorphanol was achieved. This reaction opened the way to a large set of 2-substituted 3-hydroxymorphinans, including 2-hydroxymethyl-, 2-aminomethyl-, and N-substituted 2-aminomethyl-3-hydroxymorphinans. Bivalent ligands bridged in the 2-position were also synthesized and connected with secondary and tertiary aminomethyl groups, amide bonds, and hydroxymethylene groups, respectively. Although most of the 2-substituted morphinans showed considerably lower affinities compared to their parent compounds, the bivalent ligand approach led to significantly higher affinities compared to the univalent 2-substituted morphinans.
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Affiliation(s)
- Michael Decker
- Alcohol & Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478-9106 USA
| | - Yu-Gui Si
- Alcohol & Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478-9106 USA
| | - Brian I. Knapp
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - Jean M. Bidlack
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - John L. Neumeyer
- Alcohol & Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478-9106 USA
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30
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Li F, Yin C, Chen J, Liu J, Xie X, Zhang A. [6,7]-heterocycle-fused 14-hydroxymorphinan derivatives: design, synthesis, and opioid receptor activity. ChemMedChem 2009; 4:2103-10. [PMID: 19847845 DOI: 10.1002/cmdc.200900308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A series of new 14-hydroxymorphinan analogues with a thiazole or imidazo[2,1-b]thiazole fragment as the heterocyclic function fused to ring C were designed and synthesized. These compounds can be viewed as the result of a direct modification at ring C of the 14-hydroxymorphinan scaffold. Among these compounds, three were identified as having potent binding affinity (approximately 1 nM) at both kappa and mu receptors, and acting as agonists at kappa and partial agonists or antagonists at mu receptors. In view of the promising results from studies on compounds with mixed kappa and mu receptor activities, these new compounds warrant further investigation.
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Affiliation(s)
- Fuying Li
- Synthetic Organic & Medicinal Chemistry Laboratory, Shanghai Institute of Materia Medica, 555 Zuchongzhi Road, Shanghai 201203, China
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31
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Sipos A, Mueller FKU, Lehmann J, Berényi S, Antus S. Synthesis and Pharmacological Evaluation of Thiazole and Isothiazole Derived Apomorphines. Arch Pharm (Weinheim) 2009; 342:557-68. [DOI: 10.1002/ardp.200900100] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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32
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Synthesis and opioid receptor activity of indolopropellanes. Bioorg Med Chem Lett 2009; 19:4603-6. [DOI: 10.1016/j.bmcl.2009.06.093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 06/21/2009] [Accepted: 06/24/2009] [Indexed: 11/22/2022]
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33
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Wang YJ, Tao YM, Li FY, Wang YH, Xu XJ, Chen J, Cao YL, Chi ZQ, Neumeyer JL, Zhang A, Liu JG. Pharmacological characterization of ATPM [(-)-3-aminothiazolo[5,4-b]-N-cyclopropylmethylmorphinan hydrochloride], a novel mixed kappa-agonist and mu-agonist/-antagonist that attenuates morphine antinociceptive tolerance and heroin self-administration behavior. J Pharmacol Exp Ther 2009; 329:306-13. [PMID: 19136637 DOI: 10.1124/jpet.108.142802] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ATPM [(-)-3-amino-thiazolo[5,4-b]-N-cyclopropylmethylmorphinan hydrochloride] was found to have mixed kappa- and mu-opioid activity and identified to act as a full kappa-agonist and a partial mu-agonist by in vitro binding assays. The present study was undertaken to characterize its in vivo effects on morphine antinociceptive tolerance in mice and heroin self-administration in rats. ATPM was demonstrated to yield more potent antinociceptive effects than (-)U50,488H (trans-3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl]benzeneacetamide). It was further found that the antinociceptive effects of ATPM were mediated by kappa- and mu-, but not delta-opioid, receptors. In addition to its agonist profile on the mu-receptor, ATPM also acted as a mu-antagonist, as measured by its inhibition of morphine-induced antinociception. It is more important that ATPM had a greater ratio of the ED(50) value of sedation to that of antinociception than (-)U50,488 (11.8 versus 3.7), indicative of a less sedative effect than (-)U50,488H. In addition, ATPM showed less potential to develop antinociceptive tolerance relative to (-)U50,488H and morphine. Moreover, it dose-dependently inhibited morphine-induced antinociceptive tolerance. Furthermore, it was found that chronic treatment of rats for 8 consecutive days with ATPM (0.5 mg/kg s.c.) produced sustained decreases in heroin self-administration. (-)U50,488H (2 mg/kg s.c.) also produced similar inhibitory effect. Taken together, our findings demonstrated that ATPM, a novel mixed kappa-agonist and mu-agonist/-antagonist, could inhibit morphine-induced antinociceptive tolerance, with less potential to develop tolerance and reduce heroin self-administration with less sedative effect. kappa-Agonists with some mu-activity appear to offer some advantages over selective kappa-agonists for the treatment of heroin abuse.
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Affiliation(s)
- Yu-Jun Wang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
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34
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Wentland MP, Lu Q, Ganorkar R, Zhang SZ, Jo S, Cohen DJ, Bidlack JM. Redefining the structure-activity relationships of 2,6-methano-3-benzazocines. Part 7: syntheses and opioid receptor properties of cyclic variants of cyclazocine. Bioorg Med Chem Lett 2008; 19:365-8. [PMID: 19091564 DOI: 10.1016/j.bmcl.2008.11.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 11/18/2008] [Accepted: 11/20/2008] [Indexed: 10/21/2022]
Abstract
A series of 7,8- and 8,9-fused triazole and imidazole analogues of cyclazocine have been made and characterized in opioid receptor binding and [(35)S]GTPgammaS assays. Target compounds were designed to explore the SAR surrounding our lead molecule for this study, namely the 8,9-fused pyrrolo analogue 2 of cyclazocine. Compared to 2, many of the new compounds in this study displayed very high affinity for opioid receptors.
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Affiliation(s)
- Mark P Wentland
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY 12180, USA.
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35
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36
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Sonawane ND, Verkman AS. Thiazolidinone CFTR inhibitors with improved water solubility identified by structure-activity analysis. Bioorg Med Chem 2008; 16:8187-95. [PMID: 18691893 DOI: 10.1016/j.bmc.2008.07.044] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Revised: 07/14/2008] [Accepted: 07/16/2008] [Indexed: 01/29/2023]
Abstract
The thiazolidinone 3-[(3-trifluoromethyl)phenyl]-5-[(4-carboxyphenyl)methylene]-2-thioxo-4-thiazolidinone (CFTR(inh)-172) inhibits cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel conductance with submicromolar affinity and blocks cholera toxin-induced intestinal fluid secretion. Fifty-eight CFTR(inh)-172 analogs were synthesized to identify CFTR inhibitors with improved water solubility, exploring modifications in its two phenyl rings, thiazolidinone core, and core-phenyl connectors. Greatest CFTR inhibition potency was found for 3-CF(3) and polar group-substituted-phenyl rings, and a thiazolidinone core. Two compounds with approximately 1muM CFTR inhibition potency and solubility >180 microM (>10-fold more than CFTR(inh)-172) were identified: Tetrazolo-172, containing 4-tetrazolophenyl in place of 4-carboxyphenyl, and Oxo-172, containing thiazolidinedione in place of the thiazolidinone core. These water soluble thiazolidinone analogs had low cellular toxicity. The improved water solubility of Tetrazolo- and Oxo-172 make them potential lead candidates for therapy of secretory diarrheas and polycystic kidney disease.
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Affiliation(s)
- N D Sonawane
- Departments of Medicine and Physiology, Cardiovascular Research Institute, University of California, 1246 Health Sciences East Tower, San Francisco, CA 94143-0521, USA.
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37
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Liu Z, Chen X, Yu L, Zhen X, Zhang A. Synthesis and pharmacological investigation of novel 2-aminothiazole-privileged aporphines. Bioorg Med Chem 2008; 16:6675-81. [DOI: 10.1016/j.bmc.2008.05.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Revised: 05/29/2008] [Accepted: 05/30/2008] [Indexed: 11/15/2022]
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Qian X, Li Z, Yang Q. Highly efficient antitumor agents of heterocycles containing sulfur atom: Linear and angular thiazonaphthalimides against human lung cancer cell in vitro. Bioorg Med Chem 2007; 15:6846-51. [PMID: 17707644 DOI: 10.1016/j.bmc.2007.07.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Revised: 07/02/2007] [Accepted: 07/06/2007] [Indexed: 10/23/2022]
Abstract
A novel series of aminothiazonaphthalimides, A(1-2) and B(1-2), has been regioselectively synthesized. The linear compounds B(1-2) were evaluated to be far more active than their angular isomers A(1-2) in antitumor evaluation. The linear compounds C-F, derived from compound B(1), all showed highly efficient antitumor activities against A549 and P388 cell lines. Also, cytotoxicities of these four analogues against two tumor cells were highly dependent on the length of the side chains. The compound A(1) or B(1), with two methylene units in the side chain, was more cytotoxic than its corresponding homologue A(2) or B(2), with one more methylene unit.
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Affiliation(s)
- Xuhong Qian
- State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China.
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39
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Zhang A, Ding C, Cheng C, Yao Q. Convenient synthesis of 2,7-naphthyridine Lophocladines A and B and their analogues. ACTA ACUST UNITED AC 2007; 9:916-9. [PMID: 17927143 DOI: 10.1021/cc700135h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ao Zhang
- Synthetic & Medicinal Chemistry Laboratory, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China 201203.
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40
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Dolle RE, Michaut M, Martinez-Teipel B, Belanger S, Graczyk TM, DeHaven RN. Further studies of tyrosine surrogates in opioid receptor peptide ligands. Bioorg Med Chem Lett 2007; 17:2656-60. [PMID: 17350835 DOI: 10.1016/j.bmcl.2007.01.092] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 01/29/2007] [Accepted: 01/30/2007] [Indexed: 10/23/2022]
Abstract
A series of opioid peptide ligands containing modified N-terminal tyrosine (Tyr) residues was prepared and evaluated against cloned human mu, delta, and kappa opioid receptors. This work extends the recent discovery that (S)-4-carboxamidophenylalanine (Cpa) is an effective tyrosine bioisostere. Amino acids containing negatively charged functional groups in place of tyrosine's phenolic hydroxyl lacked receptor affinity, while exchange of Tyr for (S)-4-aminophenylalanine was modestly successful. Peptides containing the new amino acids, (S)-4-carboxamido-2,6-dimethylphenylalanine (Cdp) and (S)-beta-(2-aminobenzo[d]thiazol-6-yl)alanine (Aba), displayed binding (K(i)) and functional (EC(50)) profiles comparable to the parent ligands at the three receptors. Cdp represents the best performing Tyr surrogate in terms of overall activity, while Cpa and Aba show a subtle proclivity toward the delta receptor.
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MESH Headings
- Chemistry, Pharmaceutical/methods
- Cloning, Molecular
- Drug Design
- Humans
- Hydrogen Bonding
- Kinetics
- Ligands
- Models, Chemical
- Molecular Conformation
- Peptides/chemistry
- Receptors, Opioid/chemistry
- Receptors, Opioid, delta/chemistry
- Receptors, Opioid, kappa/chemistry
- Receptors, Opioid, mu/chemistry
- Tyrosine/chemistry
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Affiliation(s)
- Roland E Dolle
- Department of Chemistry, Adolor Corporation, 700 Pennsylvania Drive, Exton, PA 19341, USA.
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41
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Peng X, Knapp BI, Bidlack JM, Neumeyer JL. In-vitro investigation of oxazol and urea analogues of morphinan at opioid receptors. Bioorg Med Chem 2007; 15:4106-12. [PMID: 17433695 PMCID: PMC2706089 DOI: 10.1016/j.bmc.2007.03.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Revised: 03/22/2007] [Accepted: 03/26/2007] [Indexed: 11/20/2022]
Abstract
A series of 2-amino-oxazole (7 and 8) analogs and 2-one-oxazole analogs (9 and 10) were synthesized from cyclorphan (1) or butorphan (2) and evaluated in-vitro by their binding affinity at mu, delta, and kappa opioid receptors and compared with their 2-aminothiozole analogs 5 and 6. Ligands 7-10 showed decreased affinities at kappa and mu receptors. Urea analogs (11-14) were also prepared from 2-aminocyclorphan (3) or 2-aminobutorphan (4) and evaluated in-vitro by their binding affinity at mu, delta, and kappa opioid receptors. The urea derived opioids retained their affinities at mu receptors while showing increased affinities at delta receptors and decreased affinities at kappa receptors. Functional activities of these compounds were measured in the [35S]GTPgammaS binding assay, illustrating that all of these ligands were kappa agonists. At the mu receptor, compounds 11 and 12 were mu agonist/antagonists.
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Affiliation(s)
- Xuemei Peng
- Alcohol and Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, Massachusetts 02478
| | - Brian I. Knapp
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642
| | - Jean M. Bidlack
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642
| | - John L. Neumeyer
- Alcohol and Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, Massachusetts 02478
- Corresponding author. Tel: +1-617-855-3388; fax: +1-617-855-3388,
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42
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Díaz N, Benvenga M, Emmerson P, Favors R, Mangold M, McKinzie J, Patel N, Peters S, Quimby S, Shannon H, Siegel M, Statnick M, Thomas E, Woodland J, Surface P, Mitch C. SAR and biological evaluation of novel trans-3,4-dimethyl-4-arylpiperidine derivatives as opioid antagonists. Bioorg Med Chem Lett 2005; 15:3844-8. [PMID: 15993591 DOI: 10.1016/j.bmcl.2005.05.123] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2005] [Revised: 05/27/2005] [Accepted: 05/31/2005] [Indexed: 10/25/2022]
Abstract
The phenolic hydroxy group of opiate-derived ligands is of known importance for biological activity. We have developed a SAR study around LY255582 by comparing the effect of the hydroxy group in the 2- and 4-position of the phenyl ring. Also, we have proved that the 3-position of the phenyl ring is optimal for opioid activity. Furthermore, we have successfully replaced the hydroxy group in LY255582 by carbamate and carboxamide groups. The new analogs have high affinity for the opioid receptors comparable to the corresponding phenol. Carboxamide analog 12 has an improved metabolism profile and proved to be efficacious in in vivo studies.
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Affiliation(s)
- Nuria Díaz
- Discovery Research, Eli Lilly and Company, Indianapolis, IN 46285, USA.
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Li Z, Yang Q, Qian X. Novel 2-aminothiazonaphthalimides as visible light activatable photonucleases: effects of intercalation, heterocyclic-fused area and side chains. Bioorg Med Chem Lett 2005; 15:1769-72. [PMID: 15780603 DOI: 10.1016/j.bmcl.2005.02.053] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2004] [Revised: 02/15/2005] [Accepted: 02/17/2005] [Indexed: 11/27/2022]
Abstract
A new family of 2-aminothiazonaphthalimides with different side chains as novel intercalative and visible light activatable photonucleases, was designed, synthesized and quantitatively evaluated. The order of their photocleaving abilities was parallel to that of their intercalative properties. The compound with linear heterocyclic-fused chromophore could intercalate into and photocleave DNA more efficiently than the one with angular heterocyclic-fused chromophore. B(2), the most efficient compound, caused obvious DNA damage at 1 microM. Mechanism experiment showed that superoxide anion was involved.
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Affiliation(s)
- Zhigang Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, PO Box 158, Zhongshan Road, Dalian 116012, China
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Abstract
This review covers beta-phenylethylamines and isoquinoline alkaloids derived from them, including further products of oxidation, condensation with formaldehyde and rearrangement, some of which do not contain as isoquinoline system, together with napthylisoquinoline alkaloids, which have a different biogenetic origin. The occurrence of the alkaloids with the structures of new bases, together with their reactions and syntheses, are reported. The literature from July 2003 to June 2004 is reviewed, with 145 references cited.
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