1
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Wang YJ, Zhao LM. Synthesis of 10-Membered Azecines through Pd-Catalyzed Formal [6+4] Cycloaddition and Their Transannular Reaction to Polycyclic Compounds. Chemistry 2023; 29:e202302111. [PMID: 37776147 DOI: 10.1002/chem.202302111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/17/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
Azecine fragments are frequently presented in natural products and bioactive compounds. However, minor efforts have been devoted to these 10-membered N-heterocycles, and their synthesis is still challenging. Reported herein is the first catalytic formal [6+4] cycloaddition for the synthesis of 10-membered azecines. Under palladium catalysis, the reaction of δ-vinylvalerolactones and benzofuran-derived azadienes proceeds smoothly to afford benzofuran-fused azecines with high diastereoselectivity in moderate to good yields. A unique transannular reaction of these 10-membered azecines for the construction of polycyclic compounds is also demonstrated.
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Affiliation(s)
- Yu-Jiao Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
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2
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A Liquid Chromatography Tandem Mass Spectrometry Method for the Simultaneous Estimation of the Dopamine Receptor Antagonist LE300 and Its N-methyl Metabolite in Plasma: Application to a Pharmacokinetic Study. Molecules 2023; 28:molecules28041553. [PMID: 36838539 PMCID: PMC9964957 DOI: 10.3390/molecules28041553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
LE300 is a novel dopamine receptor antagonist used to treat cocaine addiction. In the current study, a sensitive and fast liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been established and validated for the simultaneous analysis of LE300 and its N-methyl metabolite, MLE300, in rat plasma with an application in a pharmacokinetic study. The chromatographic elution of LE300, MLE300, and Ponatinib (IS, internal standard), was carried out on a 50 mm C18 analytical column (ID: 2.1 mm and particle size: 1.8 μm) maintained at 22 ± 2 °C. The run time was 5 min at a flow rate of 0.3 mL/min. The mobile phase consisted of 42% aqueous solvent (10 mM ammonium formate, pH: 4.2 with formic acid) and 58% organic solvent (acetonitrile). Plasma samples were pretreated using protein precipitation with acetonitrile. The electrospray ionization (ESI) source was used to generate an ion-utilizing positive mode. A multiple reaction monitoring mass analyzer mode was utilized for the quantification of analytes. The linearity of the calibration curves in rat plasma ranged from 1 to 200 ng/mL (r2 = 0.9997) and from 2 to 200 ng/mL (r2 = 0.9984) for LE300 and MLE300, respectively. The lower limits of detection (LLOD) were 0.3 ng/mL and 0.7 ng/mL in rat plasma for LE300 and MLE300, respectively. Accuracy (RE%) ranged from -1.71% to -0.07% and -4.18% to -1.48% (inter-day), and from -3.3% to -1.47% and -4.89% to -2.15% (intra-day) for LE300 and MLE300, respectively. The precision (RSD%) was less than 2.43% and 1.77% for the inter-day, and 2.77% and 1.73% for intra-day of LE300 and MLE300, respectively. These results are in agreement with FDA guidelines. The developed LC-MS/MS method was applied in a pharmacokinetic study in Wistar rats. Tmax and Cmax were 2 h and 151.12 ± 12.5 ng/mL for LE300, and 3 h and 170.4 ± 23.3 ng/mL for MLE300.
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3
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Robust and Fast UV–HPLC Method for Biotransformation Analysis of Azecines. Chromatographia 2021. [DOI: 10.1007/s10337-021-04005-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractDibenzoazecines are a new class of drug candidates for the treatment of schizophrenia. Compared to the drugs currently used in therapy, the azecines have a novel mechanism of action. Thus, they have the potential to cause fewer side effects compared to the standard therapy with a constant high neuroleptic potency. This theory was substantiated by comparative in vivo tests with haloperidol and risperidone. Seventeen new azecine derivatives have already been tested furthermore of stability, physicochemical parameters, pharmacokinetics including esterase cleavage, stability in simulated gastrointestinal fluid, stability at different pH values and determination of octanol/water-partition coefficients. For these substances, class is still a lack of information concerning the metabolism. Therefore, the present study investigated and developed a reliable and reproducible gradient reversed-phase HPLC–UV method to determinate the lead structure LE404 alongside emerging metabolites in compliance with international requirements like ICH guidelines and the European Pharmacopoeia. Up to now, there is no innovative method suitable for such a determination. Chromatographic separations were achieved with a phenomenex™ Gemini column (5 µm C18 110 Å, 250 × 4.60 mm) using a mixture of acetonitrile/potassium dihydrogen phosphate buffer (4 mmol L−1, pH 2.5) as mobile phase. The gradient method flow rate was 1.0 mL min−1, and UV detection was made at 220 nm. The optimized HPLC method was found to be specific, accurate, reproducible and robust for determination of LE404.
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4
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Titov AA, Kobzev MS, Borisova TN, Listratova AV, Evenko TV, Varlamov AV, Voskressensky LG. Facile Methods for the Synthesis of 8-Ylidene-1,2,3,8-tetrahydrobenzazecines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000203] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Alexander A. Titov
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
| | - Maxim S. Kobzev
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
| | - Tatiana N. Borisova
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
| | - Anna V. Listratova
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
| | - Tatiana V. Evenko
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
| | - Alexey V. Varlamov
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
| | - Leonid G. Voskressensky
- Organic Chemistry Department; Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
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5
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Bhattacherjee D, Shaifali, Kumar A, Sharma A, Purohit R, Das P. Iodine(iii) promoted ring-rearrangement reaction of 1-arylamino-2-oxocyclopentane-1-carbonitriles to synthesize N-aryl-δ-valerolactams. Org Biomol Chem 2020; 18:745-749. [DOI: 10.1039/c9ob02598g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Environmentally benign hypervalent iodine(iii) has been utilised selectively for carbocyclic to heterocyclic ring transformation under various electronic conditions with detailed structural and mechanistic investigation.
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Affiliation(s)
- Dhananjay Bhattacherjee
- Natural Product Chemistry and Process Development Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061
- India
- Ural Federal University
| | - Shaifali
- Natural Product Chemistry and Process Development Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061
- India
- Academy of Scientific and Innovative Research
| | - Ajay Kumar
- Natural Product Chemistry and Process Development Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061
- India
- Academy of Scientific and Innovative Research
| | - Ajay Sharma
- Natural Product Chemistry and Process Development Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061
- India
| | - Rituraj Purohit
- Academy of Scientific and Innovative Research
- New Delhi
- India
- Structural Bioinformatics Lab
- CSIR-Institute of Himalayan Bioresource Technology (CSIR-IHBT)
| | - Pralay Das
- Natural Product Chemistry and Process Development Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061
- India
- Academy of Scientific and Innovative Research
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6
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Zergiebel S, Arndt HD, Seeling A. Optimized synthesis of new LE404-derived azecine-prodrugs. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Voskressensky LG, Titov AA, Dzhankaziev MS, Borisova TN, Kobzev MS, Dorovatovskii PV, Khrustalev VN, Aksenov AV, Varlamov AV. First synthesis of heterocyclic allenes – benzazecine derivatives. NEW J CHEM 2017. [DOI: 10.1039/c6nj03403a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzazecines with an allene fragment were prepared for the first time and in high yields via tandem reaction of 1-phenylethynyl-1-methyl(benzyl)-1,2,3,4-tetrahydroisoquinolines with activated alkynes in trifluoroethanol.
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Affiliation(s)
| | - Alexander A. Titov
- Organic Chemistry Department
- Peoples' Friendship University of Russia
- Moscow 117198
- Russia
| | - Maksad S. Dzhankaziev
- Organic Chemistry Department
- Peoples' Friendship University of Russia
- Moscow 117198
- Russia
| | - Tatiana N. Borisova
- Organic Chemistry Department
- Peoples' Friendship University of Russia
- Moscow 117198
- Russia
| | - Maxim S. Kobzev
- Organic Chemistry Department
- Peoples' Friendship University of Russia
- Moscow 117198
- Russia
| | | | - Victor N. Khrustalev
- Organic Chemistry Department
- Peoples' Friendship University of Russia
- Moscow 117198
- Russia
- Nesmeyanov Institute of Organoelement Compounds of RAS
| | | | - Alexey V. Varlamov
- Organic Chemistry Department
- Peoples' Friendship University of Russia
- Moscow 117198
- Russia
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8
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Guo D, Li J, Lin H, Zhou Y, Chen Y, Zhao F, Sun H, Zhang D, Li H, Shoichet BK, Shan L, Zhang W, Xie X, Jiang H, Liu H. Design, Synthesis, and Biological Evaluation of Novel Tetrahydroprotoberberine Derivatives (THPBs) as Selective α 1A-Adrenoceptor Antagonists. J Med Chem 2016; 59:9489-9502. [PMID: 27709945 DOI: 10.1021/acs.jmedchem.6b01217] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel series of tetrahydroprotoberberine derivatives (THPBs) were designed, synthesized, and evaluated as selective α1A-adrenergic receptors (AR) antagonists for the treatment of benign prostatic hyperplasia. On the basis of the pharmacophore model of the marketed drug silodosin, THPBs were modified by introducing an indole segment into their core scaffolds. In calcium assays, 7 out of 32 compounds displayed excellent antagonistic activities against α1A-ARs, with IC50 less than 250 nM. Among them, compound (S)-27 had the most potent biological activity; its IC50 toward α1A-AR was 12.8 ± 2.2 nM, which is 781 and 20 times more selective than that toward α1B- and α1D-AR, respectively. In the functional assay using isolated rat tissues, compound (S)-27 inhibited norepinephrine-induced urethra smooth muscle contraction potently (IC50 = 0.5 ± 0.3 nM), without inhibiting the aortic contraction (IC50 > 1000 nM), displaying a better tissue selectivity than the marketed drug silodosin. Additional results of preliminary safety studies (acute toxicity and hERG inhibition) and pharmacokinetics studies indicated the potential druggability for compound (S)-27 which is a promising lead for the development of selective α1A-AR antagonists for the treatment of BPH.
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Affiliation(s)
- Diliang Guo
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Jing Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Henry Lin
- Department of Pharmaceutical Chemistry, University of California-San Francisco , San Francisco, California 94158, United States
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Ying Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Fei Zhao
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Haifeng Sun
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Dan Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Honglin Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology , Shanghai 200237, China
| | - Brian K Shoichet
- Department of Pharmaceutical Chemistry, University of California-San Francisco , San Francisco, California 94158, United States.,Department of Pharmacology, University of North Carolina Chapel Hill School of Medicine , Chapel Hill, North Carolina 27516, United States
| | - Lei Shan
- Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University , 325 Guohe Road, Shanghai 200433, China
| | - Weidong Zhang
- Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University , 325 Guohe Road, Shanghai 200433, China
| | - Xin Xie
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Hualiang Jiang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
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9
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Butini S, Nikolic K, Kassel S, Brückmann H, Filipic S, Agbaba D, Gemma S, Brogi S, Brindisi M, Campiani G, Stark H. Polypharmacology of dopamine receptor ligands. Prog Neurobiol 2016; 142:68-103. [PMID: 27234980 DOI: 10.1016/j.pneurobio.2016.03.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 01/26/2016] [Accepted: 03/15/2016] [Indexed: 01/11/2023]
Abstract
Most neurological diseases have a multifactorial nature and the number of molecular mechanisms discovered as underpinning these diseases is continuously evolving. The old concept of developing selective agents for a single target does not fit with the medical need of most neurological diseases. The development of designed multiple ligands holds great promises and appears as the next step in drug development for the treatment of these multifactorial diseases. Dopamine and its five receptor subtypes are intimately involved in numerous neurological disorders. Dopamine receptor ligands display a high degree of cross interactions with many other targets including G-protein coupled receptors, transporters, enzymes and ion channels. For brain disorders like Parkinsońs disease, schizophrenia and depression the dopaminergic system, being intertwined with many other signaling systems, plays a key role in pathogenesis and therapy. The concept of designed multiple ligands and polypharmacology, which perfectly meets the therapeutic needs for these brain disorders, is herein discussed as a general ligand-based concept while focusing on dopaminergic agents and receptor subtypes in particular.
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Affiliation(s)
- S Butini
- Department of Biotechnology, Chemistry and Pharmacy, European Research Centre for Drug Discovery and Development, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - K Nikolic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade, Serbia
| | - S Kassel
- Heinrich Heine University Duesseldorf, Institute of Pharmaceutical and Medicinal Chemistry, Universitaetsstr. 1, 40225 Duesseldorf, Germany
| | - H Brückmann
- Heinrich Heine University Duesseldorf, Institute of Pharmaceutical and Medicinal Chemistry, Universitaetsstr. 1, 40225 Duesseldorf, Germany
| | - S Filipic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade, Serbia
| | - D Agbaba
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade, Serbia
| | - S Gemma
- Department of Biotechnology, Chemistry and Pharmacy, European Research Centre for Drug Discovery and Development, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - S Brogi
- Department of Biotechnology, Chemistry and Pharmacy, European Research Centre for Drug Discovery and Development, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - M Brindisi
- Department of Biotechnology, Chemistry and Pharmacy, European Research Centre for Drug Discovery and Development, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - G Campiani
- Department of Biotechnology, Chemistry and Pharmacy, European Research Centre for Drug Discovery and Development, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - H Stark
- Heinrich Heine University Duesseldorf, Institute of Pharmaceutical and Medicinal Chemistry, Universitaetsstr. 1, 40225 Duesseldorf, Germany.
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10
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Chen Y, Xiong M, Dong Y, Haberman A, Cao J, Liu H, Zhou W, Zhang SC. Chemical Control of Grafted Human PSC-Derived Neurons in a Mouse Model of Parkinson's Disease. Cell Stem Cell 2016; 18:817-826. [PMID: 27133795 DOI: 10.1016/j.stem.2016.03.014] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 12/16/2015] [Accepted: 03/23/2016] [Indexed: 01/21/2023]
Abstract
Transplantation of human pluripotent stem cell (hPSC)-derived neurons is a promising avenue for treating disorders including Parkinson's disease (PD). Precise control over engrafted cell activity is highly desired, as cells do not always integrate properly into host circuitry and can cause suboptimal graft function or undesired outcomes. Here, we show tunable rescue of motor function in a mouse model of PD, following transplantation of human midbrain dopaminergic (mDA) neurons differentiated from hPSCs engineered to express DREADDs (designer receptors exclusively activated by designer drug). Administering clozapine-N-oxide (CNO) enabled precise DREADD-dependent stimulation or inhibition of engrafted neurons, revealing D1 receptor-dependent regulation of host neuronal circuitry by engrafted cells. Transplanted cells rescued motor defects, which could be reversed or enhanced by CNO-based control of graft function, and activating engrafted cells drives behavioral changes in transplanted mice. These results highlight the ability to exogenously and noninvasively control and refine therapeutic outcomes following cell transplantation.
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Affiliation(s)
- Yuejun Chen
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA.
| | - Man Xiong
- Institute of Pediatrics, Children's Hospital, Fudan University, 399 Wanyuan Road, Shanghai 201102, China
| | - Yi Dong
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | | | - Jingyuan Cao
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Huisheng Liu
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Wenhao Zhou
- Institute of Pediatrics, Children's Hospital, Fudan University, 399 Wanyuan Road, Shanghai 201102, China
| | - Su-Chun Zhang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neurology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA.
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11
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Kiran Kumar Y, Ranjith Kumar G, Sridhar Reddy M. Hg/Pt-catalyzed conversion of bromo alkynamines/alkynols to saturated and unsaturated γ-butyrolactams/lactones via intramolecular electrophilic cyclization. Org Biomol Chem 2015; 14:1252-60. [PMID: 26647118 DOI: 10.1039/c5ob02125a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Convenient and general Hg(ii)/Pt(iv) catalyzed syntheses of γ-butyrolactams and α,β-unsaturated γ-butyrolactones/lactams are described via intramolecular electrophilic cyclizations of bromoalkynes with tosylamino and hydroxyl tethers. The reaction features the use of wet solvents, the exclusion of any base and additive, mild conditions and practical yields. We also synthesised few chiral lactams through this pathway. Additionally, it is shown that the NHTs group distanced further from the homopropargylic position assists regioselective bromoalkyne hydration to yield useful α-bromoketones. Furthermore, Boc protected bromo homo propargyl amines undergo 6-endo-dig cyclization through Boc oxygen to give bromomethylene substituted oxazinones.
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Affiliation(s)
- Yalla Kiran Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
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12
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One-Pot Dichotomous Construction of Inside-Azayohimban and Pro-Azayohimban Systems via an Enantioselective Organocatalytic Cascade; Their Use as a Model to Probe the (Aza-)Indole Local Solvent Environment. Org Lett 2015; 17:5816-9. [DOI: 10.1021/acs.orglett.5b02949] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Huang G, Nimczick M, Decker M. Rational Modification of the Biological Profile of GPCR Ligands through Combination with Other Biologically Active Moieties. Arch Pharm (Weinheim) 2015; 348:531-40. [DOI: 10.1002/ardp.201500079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Guozheng Huang
- Pharmazeutische und Medizinische Chemie; Institut für Pharmazie und Lebensmittelchemie; Julius-Maximilians-Universität Würzburg; Würzburg Germany
| | - Martin Nimczick
- Pharmazeutische und Medizinische Chemie; Institut für Pharmazie und Lebensmittelchemie; Julius-Maximilians-Universität Würzburg; Würzburg Germany
| | - Michael Decker
- Pharmazeutische und Medizinische Chemie; Institut für Pharmazie und Lebensmittelchemie; Julius-Maximilians-Universität Würzburg; Würzburg Germany
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14
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Selective microemulsion liquid chromatography analysis of dopamine receptor antagonist LE300 and its N-methyl metabolite in mouse sera by using a monolithic silica column. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 989:104-11. [DOI: 10.1016/j.jchromb.2015.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 02/25/2015] [Accepted: 03/06/2015] [Indexed: 11/24/2022]
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15
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Kim K, Hong SH. Iridium-catalyzed single-step N-substituted lactam synthesis from lactones and amines. J Org Chem 2015; 80:4152-6. [PMID: 25798753 DOI: 10.1021/acs.joc.5b00101] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Catalytic lactam synthesis was achieved directly from lactones and amines using an Ir catalyst. Three sequential transformations—aminolysis of lactone, N-alkylation of amine with hydroxyamide, and intramolecular transamidation of aminoamide—afforded the corresponding N-substituted lactams.
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Affiliation(s)
- Kicheol Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
| | - Soon Hyeok Hong
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
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16
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Li Z, Li J, Yang N, Chen Y, Zhou Y, Ji X, Zhang L, Wang J, Xie X, Liu H. Gold(I)-Catalyzed Cascade Approach for the Synthesis of Tryptamine-Based Polycyclic Privileged Scaffolds as α1-Adrenergic Receptor Antagonists. J Org Chem 2013; 78:10802-11. [DOI: 10.1021/jo4017887] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zeng Li
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Jing Li
- National
Center for Drug Screening, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Nan Yang
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Ying Chen
- National
Center for Drug Screening, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yu Zhou
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Xun Ji
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Lei Zhang
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Jinfang Wang
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Xin Xie
- National
Center for Drug Screening, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Hong Liu
- CAS
Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
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17
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Ye N, Neumeyer JL, Baldessarini RJ, Zhen X, Zhang A. Update 1 of: Recent Progress in Development of Dopamine Receptor Subtype-Selective Agents: Potential Therapeutics for Neurological and Psychiatric Disorders. Chem Rev 2013; 113:PR123-78. [DOI: 10.1021/cr300113a] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Na Ye
- CAS Key Laboratory of Receptor Research, and Synthetic Organic & Medicinal Chemistry Laboratory (SOMCL), Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai, China 201203
| | - John L. Neumeyer
- Medicinal Chemistry Laboratory,
McLean Hospital, Harvard Medical School, Massachusetts 02478, United States
| | | | - Xuechu Zhen
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China 215123
| | - Ao Zhang
- CAS Key Laboratory of Receptor Research, and Synthetic Organic & Medicinal Chemistry Laboratory (SOMCL), Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai, China 201203
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18
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Synthesis of azecino[5,4-b]indoles and indolo[3,2-e][2]benzazonines via tandem transformation of hydrogenated indoloquinolizines and indolizines. Russ Chem Bull 2013. [DOI: 10.1007/s11172-012-0167-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Hong BC, Liao WK, Dange NS, Liao JH. One-Pot Organocatalytic Enantioselective Domino Double-Michael Reaction and Pictet-Spengler–Lactamization Reaction. A Facile Entry to the “Inside Yohimbane” System with Five Contiguous Stereogenic Centers. Org Lett 2013; 15:468-71. [DOI: 10.1021/ol3032329] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621 Taiwan, R.O.C
| | - Wei-Kai Liao
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621 Taiwan, R.O.C
| | - Nitin S. Dange
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621 Taiwan, R.O.C
| | - Ju-Hsiou Liao
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621 Taiwan, R.O.C
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20
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Oliva-Madrid MJ, Saura-Llamas I, Bautista D, Vicente J. Benzyne–benzyne–RNC or CO triple sequential insertion into the Pd–C bond: synthesis of ten-membered N-heterocycles through stable ten- and eleven-membered palladacycles. Chem Commun (Camb) 2013; 49:7997-9. [DOI: 10.1039/c3cc43049a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Kawamoto K, Otsuguro K, Ishizuka M, Ito S. Inhibitory effects of dopamine on spinal synaptic transmission via dopamine D1-like receptors in neonatal rats. Br J Pharmacol 2012; 166:788-800. [PMID: 22168428 DOI: 10.1111/j.1476-5381.2011.01815.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Dopamine released from the endings of descending dopaminergic nerve fibres in the spinal cord may be involved in modulating functions such as locomotion and nociception. Here, we examined the effects of dopamine on spinal synaptic transmissions in rats. EXPERIMENTAL APPROACH Spinal reflex potentials, monosynaptic reflex potential (MSR) and slow ventral root potential (sVRP), were measured in the isolated spinal cord of the neonatal rat. Dopamine release was measured by HPLC. KEY RESULTS Dopamine at lower concentrations (<1 µM) depressed sVRP, which is a C fibre-evoked polysynaptic response and believed to reflect nociceptive transmission. At higher concentrations (>1 µM), in addition to a potent sVRP depression, dopamine depolarized baseline potential and slightly depressed MSR. Depression of sVRP by dopamine was partially reversed by dopamine D(1) -like but not by D(2) -like receptor antagonists. SKF83959 and SKF81297, D(1) -like receptor agonists, and methamphetamine, an endogenous dopamine releaser, also caused the inhibition of sVRP. Methamphetamine also depressed MSR, which was inhibited by ketanserin, a 5-HT(2A/2C) receptor antagonist. Methamphetamine induced the release of dopamine and 5-HT from spinal cords, indicating that the release of endogenous dopamine and 5-HT depresses sVRP and MSR respectively. CONCLUSION AND IMPLICATIONS These results suggested that dopamine at lower concentrations preferentially inhibited sVRP, which is mediated via dopamine D(1) -like and other unidentified receptors. The dopamine-evoked depression is involved in modulating the spinal functions by the descending dopaminergic pathways.
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Affiliation(s)
- K Kawamoto
- Laboratories of Pharmacology Toxicology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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22
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Design, synthesis, and pharmacological evaluation of novel tetrahydroprotoberberine derivatives: Selective inhibitors of dopamine D1 receptor. Bioorg Med Chem 2012; 20:4862-71. [DOI: 10.1016/j.bmc.2012.05.057] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 05/23/2012] [Accepted: 05/24/2012] [Indexed: 01/11/2023]
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23
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Robaa D, Enzensperger C, ElDin AbulAzm S, Hefnawy MM, El-Subbagh HI, Wani TA, Lehmann J. Chiral Indolo[3,2-f][3]benzazecine-Type Dopamine Receptor Antagonists: Synthesis and Activity of Racemic and Enantiopure Derivatives. J Med Chem 2011; 54:7422-6. [DOI: 10.1021/jm200676f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dina Robaa
- Institut für Pharmazie, Abteilung Medizinische Chemie, Martin Luther Universität Halle-Wittenberg, Germany
| | - Christoph Enzensperger
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich Schiller Universität Jena, Jena, Germany
| | - Shams ElDin AbulAzm
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt
| | - Mohamed M. Hefnawy
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Hussein I. El-Subbagh
- Department of Pharmaceutical Chemistry, College of Pharmaceutical Sciences & Pharmaceutical Industries, Future University, Cairo, Egypt
| | - Tanveer A. Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Jochen Lehmann
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich Schiller Universität Jena, Jena, Germany
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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24
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Marsault E, Peterson ML. Macrocycles Are Great Cycles: Applications, Opportunities, and Challenges of Synthetic Macrocycles in Drug Discovery. J Med Chem 2011; 54:1961-2004. [DOI: 10.1021/jm1012374] [Citation(s) in RCA: 591] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Eric Marsault
- Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke Québec, J1H5N4, Canada
| | - Mark L. Peterson
- Tranzyme Pharma Inc., 3001 12e Avenue Nord, Sherbrooke, Québec, J1H5N4, Canada
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25
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Robaa D, Kretschmer R, Siol O, AbulAzm SE, ElKhawass E, Lehmann J, Enzensperger C. Residues at the Indole-NH of LE300 Modulate Affinities and Selectivities for Dopamine Receptors. Arch Pharm (Weinheim) 2010; 344:28-36. [DOI: 10.1002/ardp.201000121] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Revised: 06/07/2010] [Accepted: 06/11/2010] [Indexed: 11/07/2022]
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26
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Rostom SAF. Novel fused pyrrole heterocyclic ring systems as structure analogs of LE 300: Synthesis and pharmacological evaluation as serotonin 5-HT(2A), dopamine and histamine H(1) receptor ligands. Arch Pharm (Weinheim) 2010; 343:73-80. [PMID: 20108267 DOI: 10.1002/ardp.200900219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
LE 300 represents a structurally novel type of antagonists acting preferentially at the dopamine D(1)/D(5 )receptors and the serotonin 5-HT(2A )receptor. This compound consists of a ten-membered central azecine ring fused to an indole ring on one side and a benzene moiety on the other side. To estimate the importance of the indole and / or phenyl moieties in this highly active benz-indolo-azecine, both rings were removed and replaced with a 1H-pyrrole counterpart. Accordingly, some new analogs of LE 300 namely, pyrrolo[2,3-g]indolizine, pyrrolo[3,2-a]quinolizine rings and their corresponding dimethylpyrrolo[2,3-d]azonine, and dimethylpyrrolo[2,3-d]azecine were synthesized to be evaluated for their activity at the 5-HT(2A) and dopamine D(1), D(2L), D(4), D(5) receptors in relation to LE 300. In addition, their activity at the H(1)-histamine receptors was also determined. The results suggested that the rigid pyrrolo[2,3-g]indolizine 7 and pyrrolo[3,2-a]quinolizine 8 analogs lacked biological activity in the adopted three bioassays. However, their corresponding flexible pyrrolo[2,3-d]azonine 11 and pyrrolo[2,3-d]azecine 12 derivatives revealed weak partial agonistic activity and weak antagonistic potency at the serotonin 5-HT(2A )and histamine H(1 )receptors, respectively. Meanwhile, they showed no affinity to any of the four utilized dopamine receptors. Variation in ring size did not contribute to a significant influence on the three tested bioactivities. Removal of the hydrophobic moiety (phenyl ring) and replacement of the indole moiety with a 1H-pyrrole counterpart led to a dramatic alteration in the profile of activity of such azecine-type compounds.
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Affiliation(s)
- Sherif A F Rostom
- Department of Pharmaceutical Chemistry, King Abdulaziz University, Jeddah, Saudi Arabia.
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27
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Robaa D, Enzensperger C, Abul Azm SED, El Khawass ES, El Sayed O, Lehmann J. Dopamine Receptor Ligands. Part 18: Modification of the Structural Skeleton of Indolobenzazecine-Type Dopamine Receptor Antagonists. J Med Chem 2010; 53:2646-50. [DOI: 10.1021/jm901291r] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dina Robaa
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, D-07743 Jena, Germany
| | - Christoph Enzensperger
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, D-07743 Jena, Germany
| | - Shams El Din Abul Azm
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt
| | - El Sayeda El Khawass
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt
| | - Ola El Sayed
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt
| | - Jochen Lehmann
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, D-07743 Jena, Germany
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28
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Sasikumar T, Burnett DA, Greenlee WJ, Smith M, Fawzi A, Zhang H, Lachowicz JE. Remote functionalization of SCH 39166: Discovery of potent and selective benzazepine dopamine D1 receptor antagonists. Bioorg Med Chem Lett 2010; 20:832-5. [DOI: 10.1016/j.bmcl.2009.12.094] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Revised: 12/22/2009] [Accepted: 12/24/2009] [Indexed: 11/25/2022]
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29
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Zhang J, Xiong B, Zhen X, Zhang A. Dopamine D1receptor ligands: Where are we now and where are we going. Med Res Rev 2009; 29:272-94. [DOI: 10.1002/med.20130] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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30
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Zhang A, Neumeyer JL, Baldessarini RJ. Recent progress in development of dopamine receptor subtype-selective agents: potential therapeutics for neurological and psychiatric disorders. Chem Rev 2007; 107:274-302. [PMID: 17212477 DOI: 10.1021/cr050263h] [Citation(s) in RCA: 267] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ao Zhang
- Bioorganic and Medicinal Chemistry Laboratory, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
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31
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Enzensperger C, Kilian S, Ackermann M, Koch A, Kelch K, Lehmann J. Dopamine/serotonin receptor ligands. Part 15: Oxygenation of the benz-indolo-azecine LE 300 leads to novel subnanomolar dopamine D1/D5 antagonists. Bioorg Med Chem Lett 2007; 17:1399-402. [PMID: 17188870 DOI: 10.1016/j.bmcl.2006.11.093] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2006] [Revised: 11/28/2006] [Accepted: 11/30/2006] [Indexed: 11/15/2022]
Abstract
Relying on the high affinities of the benz-indolo-azecine LE 300 (1) and the hydroxylated dibenz-azecine LE 404 (2b) for the D1/D5 receptor subtypes, we synthesized methoxylated, hydroxylated and an indole-N methylated derivatives of 1 (Fig. 1). Hydroxylation of azecine derivatives is beneficial with regard to the affinities and selectivities for all the dopamine receptor subtypes. The 'serotonin-derived' 3-oxygenated target compounds but not the 11-oxygenated analogues were superior to the unsubstituted LE 300. 11-Methoxy-7,14-dimethyl-6,7,8,9,14,15-hexahydro-5H-indolo[3,2-f][3]benzazecine (3e) was found to be the most potent antagonist at D2/D3/D4 and D5 receptor subtypes (Ki for D5 = 0.23 nmol) of all known benz-indolo-azecines.
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Affiliation(s)
- Christoph Enzensperger
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, D-07743 Jena, Germany
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32
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Enzensperger C, Lehmann J. Dopamine/Serotonin Receptor Ligands. 13: Homologization of a Benzindoloazecine-Type Dopamine Receptor Antagonist Modulates the Affinities for Dopamine D1−D5 Receptors. J Med Chem 2006; 49:6408-11. [PMID: 17034146 DOI: 10.1021/jm060213k] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Enlarging the 10-membered ring of 7-methyl-6,7,8,9,14,15-hexahydro-5H-indolo[3,2-f][3]benzazecine (1, LE 300) yielded two homologue antagonists. Their affinities and inhibitory activities at D(1)-D(5) receptors were measured by radioligand binding experiments and a functional Ca(2+) assay. Compared to 1, phenylpropyl homologue 3 was superior in selectivity and affinity for the D(5) subtype (K(i) = 0.6 nM), whereas the affinity of the indolylpropyl homologue 2 for all subtypes decreased. Compounds 2, 3, 10, 11, 17, and 18 are derivatives of novel heterocyclic ring systems.
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Affiliation(s)
- Christoph Enzensperger
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, D-07743 Jena, Germany
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33
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Hoefgen B, Decker M, Mohr P, Schramm AM, Rostom SAF, El-Subbagh H, Schweikert PM, Rudolf DR, Kassack MU, Lehmann J. Dopamine/Serotonin Receptor Ligands. 10: SAR Studies on Azecine-type Dopamine Receptor Ligands by Functional Screening at Human Cloned D1, D2L, and D5 Receptors with a Microplate Reader Based Calcium Assay Lead to a Novel Potent D1/D5 Selective Antagonist. J Med Chem 2005; 49:760-9. [PMID: 16420061 DOI: 10.1021/jm050846j] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
On the basis of the benz[d]indolo[2,3-g]azecine derivative 1 (LE300), structure-activity relations were investigated in order to identify the pharmacophore in this new class of ligands. Various structural modifications were performed and the inhibitory activities at human cloned D(1), D(2L), and D(5) receptors were measured by using a simple fluorescence microplate reader based calcium assay. Subsequently, the affinities of active compounds were estimated by radioligand binding experiments. Deleting one of the aromatic rings as well as replacing it by a phenyl moiety abolishes the inhibitory activities almost completely. Contraction of the 10-membered central ring decreases them significantly. The replacement of indole by thiophene or N-methylpyrrole reduces the inhibitory activity, whereas replacing the indole by benzene increases it. Finally, the hydroxylated dibenz[d,g]azecine derivative 11d (LE404) was found to be more active than the lead 1 in the functional calcium assay as well as in radioligand displacement experiments.
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MESH Headings
- Benzene Derivatives/chemical synthesis
- Benzene Derivatives/chemistry
- Benzene Derivatives/pharmacology
- Binding, Competitive
- Calcium/metabolism
- Cell Line
- Cloning, Molecular
- Dopamine D2 Receptor Antagonists
- Fluorometry
- Heterocyclic Compounds, 3-Ring/chemical synthesis
- Heterocyclic Compounds, 3-Ring/chemistry
- Heterocyclic Compounds, 3-Ring/pharmacology
- Humans
- Indoles/chemical synthesis
- Indoles/chemistry
- Indoles/pharmacology
- Ligands
- Pyrroles/chemical synthesis
- Pyrroles/chemistry
- Pyrroles/pharmacology
- Radioligand Assay
- Receptors, Dopamine D1/antagonists & inhibitors
- Receptors, Dopamine D1/metabolism
- Receptors, Dopamine D2/metabolism
- Receptors, Dopamine D5/antagonists & inhibitors
- Receptors, Dopamine D5/metabolism
- Structure-Activity Relationship
- Thiophenes/chemical synthesis
- Thiophenes/chemistry
- Thiophenes/pharmacology
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Affiliation(s)
- Barbara Hoefgen
- Institute of Pharmacy, University of Bonn, D-53121 Bonn, Germany
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34
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Wu WL, Burnett DA, Spring R, Greenlee WJ, Smith M, Favreau L, Fawzi A, Zhang H, Lachowicz JE. Dopamine D1/D5 receptor antagonists with improved pharmacokinetics: design, synthesis, and biological evaluation of phenol bioisosteric analogues of benzazepine D1/D5 antagonists. J Med Chem 2005; 48:680-93. [PMID: 15689153 DOI: 10.1021/jm030614p] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Benzazepines 1 and 2 (SCH 23390 and SCH 39166, respectively) are two classical benzazepine D1/D5 antagonists, with Ki values 1.4 and 1.2 nM, respectively. Compound 2 has been in human clinical trials for a variety of diseases, including schizophrenia, cocaine addition, and obesity. Both 1 and 2 displayed low plasma levels and poor oral bioavailability, due to rapid first-pass metabolism of the phenol moieties. Several heterocyclic systems containing an N-H hydrogen bond donor were synthesized and evaluated as phenol isosteres. The preference orientation of the hydrogen bond was established by comparison of analogues containing different NH vectors. Replacement of the phenol group of 2 with an indole ring generated the first potent D1/D5 antagonist 11b. Further optimization led to the synthesis of very potent benzimidazolones 19, 20 and benzothiazolone analogues 28, 29. These compounds have excellent selectivity over D2-D4 receptors, alpha2a receptor, and the 5-HT transporter. Compared to 2, these heterocyclic phenol isosteres showed much better pharmacokinetic profiles as demonstrated by rat plasma levels. In sharp contrast, similar phenolic replacements in 1 decreased the binding affinity dramatically, presumably due to a conformational change of the pendant phenyl group. However, one indazole compound 33 was identified as a potent D1/D5 ligand in this series.
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Affiliation(s)
- Wen-Lian Wu
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, USA.
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35
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Decker M, Schleifer KJ, Nieger M, Lehmann J. Dopamine/serotonin receptor ligands. Part VIII: the dopamine receptor antagonist LE300 - modelled and X-ray structure plus further pharmacological characterization, including serotonin receptor binding, biogenic amine transporter testing and in vivo testings. Eur J Med Chem 2005; 39:481-9. [PMID: 15183906 DOI: 10.1016/j.ejmech.2004.02.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2003] [Revised: 01/23/2004] [Accepted: 02/05/2004] [Indexed: 11/16/2022]
Abstract
-LE300, a benz[d]indolo[2,3-g]azecine with nanomolar affinities to the hD(1) receptor family, has been further pharmacologically characterized and its modelled structure was compared to its X-ray structure in order to explain NMR data, that was not in accordance to the X-ray structure. Moderate affinity at the hD(3) receptor was determined, nanomolar affinities were found at the 5-HT(2A) and 5-HT(2C) receptors, micromolar affinity at the 5-HT(1A) receptor using binding assays. Functional studies indicate moderate antagonist activity at the 5-HT(2A) site. No activity was found at dopamine, serotonin and norepinephrine transporters. These results suggested the use of LE300 for cocaine addiction treatment. High activities were found using in vivo testing: LE300 suppressed spontaneous locomotor activity with an ID(50) of 1.24 mg/kg and attenuated locomotor activity induced by 20 mg/kg cocaine with an AD(50) of 1.50 mg/kg. It failed to substitute for the discriminative stimulus effects produced by cocaine.
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Affiliation(s)
- Michael Decker
- Lehrstuhl für Pharmazeutische/Medizinische Chemie, Institut für Pharmazie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, 07743 Jena, Germany
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36
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Wittig TW, Decker M, Lehmann J. Dopamine/serotonin receptor ligands. 9. Oxygen-containing midsized heterocyclic ring systems and nonrigidized analogues. A step toward dopamine D5 receptor selectivity. J Med Chem 2004; 47:4155-8. [PMID: 15293986 DOI: 10.1021/jm049720x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Eleven-membered heterocycles (dibenz[g,j]-1-oxa-4-azacycloundecenes) and open-chain analogues were synthesized and investigated for affinities to human dopamine receptor subtypes. The moderately rigidized rings displayed nanomolar and subnanomolar Ki values at D1-like receptors with a significant D1 to D2 and a slight D5 to D1 selectivity. The open-chain analogues showed lower affinities but significant D1 to D2 selectivities. Compound 3 (Ki(D5) = 0.57 nmol) showed antagonistic or inverse agonistic binding characteristics in a functional Ca assay.
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Affiliation(s)
- Thomas W Wittig
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich-Schiller-Universität Jena, Philosophenweg 14, D-07743 Jena, Germany
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37
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Investigations into the mechanism of lactamization of lactones yielding in a novel route to biologically active tryptamine derivatives. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.03.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Kassack MU. Quantitative comparison of functional screening by measuring intracellular Ca2+ with radioligand binding at recombinant human dopamine receptors. AAPS PHARMSCI 2002; 4:E31. [PMID: 12646003 PMCID: PMC2751320 DOI: 10.1208/ps040431] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The purpose of this study was to test whether screening at dopamine receptors performed with a recently described functional assay for G-protein coupled receptors (GPCRs) provides data that correlate significantly with radioligand binding data in the literature, thus possibly allowing researchers to replace radioligand binding with nonradioactive functional screening. Human dopamine receptors hD1 and hD2L (representing Gs [hD1] or Gi [hD2L] coupled GPCRs) were recombinantly expressed in human embryonic kidney (HEK293) cells. Cells were loaded with Oregon Green 488 BAPTA-1/AM and evenly distributed in 384 well plates. Seventeen test compounds were screened for agonistic activity by injection into the cell suspension and monitoringH of intracellular Ca2+ with a fluorescence microplate reader. Then, standard agonists (100nM SKF38393 for hD1, 30nM quinpirole for hD2L) were injected into wells preincubated with test compounds (screening for antagonism). Injection of various agonists resulted in a concentration-dependent increase in fluorescence. Further, preincubation of antagonists with dopamine receptor expressing cells inhibits concentration-dependent the agonist-induced increase in fluorescence. Calculated apparent functional Ki values correlate with radioligand binding data in the literature (r2 = 0.7796 for D1, r2 = 0.7743 for D2). The correlation between apparent functional Ki values and radioligand binding data for the 17 tested compounds suggests that screening of test compounds at dopamine receptors with the functional Ca2+ assay can replace radioligand binding studies. Furthermore, besides apparent Ki values, information about agonistic or antagonistic properties of a test compound can be obtained with the functional Ca2+ assay.
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Affiliation(s)
- Matthias U Kassack
- Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany.
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Takamori K, Funakoshi T, Hirota S, Chaki S, Kameo K. Antipsychotic profile of 5-[2-[4-(6-fluoro-1H-indole-3-yl)piperidin-1-yl]ethyl]-4-(4-fluorophenyl)thiazole-2-carboxylic acid amide (NRA0562) in rats. Life Sci 2002; 71:947-52. [PMID: 12084391 DOI: 10.1016/s0024-3205(02)01766-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The antipsychotic profile of 5-[2-[4-(6-fluoro-1H-indole-3-yl)piperidin-1-yl]ethyl]-4-(4-fluorophenyl)thiazole-2-carboxylic acid amide (NRA0562) was investigated using the conditioned avoidance test in rats. NRA0562 is a putative "atypical" antipsychotic agent with moderate to high affinities for dopamine D(1), D(2), D(4), 5-hydroxytryptamine(2A) receptors and alpha(1) adrenoceptor. NRA0562 (1 and 3 mg/kg, p.o.) dose-dependently and significantly impaired the conditioned avoidance response. Likewise other atypical antipsychotics such as risperidone (1 and 3 mg/kg, p.o.) and clozapine (100 mg/kg, p.o.) dose-dependently and significantly impaired the conditioned avoidance response in rats. In addition, typical antipsychotics, haloperidol (1 and 3 mg/kg, p.o.) potently impaired the conditioned avoidance response.These results suggest that antipsychotic profile of NRA0562 is consistent with profiles of clozapine or risperidone and may be considered an atypical antipsychotic agent.
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Affiliation(s)
- Kazuaki Takamori
- CNS Diseases Research, Medicinal Pharmacology Laboratory, Medicinal Research Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-cho, Saitama, Saitama 330-8530, Japan.
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Kassack MU, Höfgen B, Lehmann J, Eckstein N, Quillan JM, Sadée W. Functional screening of G protein-coupled receptors by measuring intracellular calcium with a fluorescence microplate reader. JOURNAL OF BIOMOLECULAR SCREENING 2002; 7:233-46. [PMID: 12097186 DOI: 10.1177/108705710200700307] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Ligand binding studies reveal information about affinity to G protein-coupled receptors (GPCRs) rather than functional properties. Increase in intracellular Ca(2+) appears to represent a universal second messenger signal for a majority of recombinant GPCRs. Here, we exploit Ca(2+) signaling as a fast and sensitive functional screening method for a number of GPCRs coupled to different G proteins. Ca(2+) fluorescence measurements are performed using Oregon Green 488 BAPTA-1/AM and a microplate reader equipped with an injector. Buffer alone or test compounds dissolved in buffer are injected into a cell suspension, and fluorescence intensity is recorded for 30 s. Each of the GPCRs tested--G(q)-coupled P2Y(2), G(s)-coupled dopamine D1 and D5, G(i)-coupled dopamine D2L, and G(q/11)-coupled muscarinic acetylcholine M1--yielded a significant rise in intracellular free [Ca(2+)] on agonist stimulation. Agonist stimulation was dose dependent, as shown for ATP or UTP stimulation of P2Y(2) receptors (EC(50) = 1 microM), SKF38393 stimulation of hD1 and hD5 (EC(50) = 18.1 nM and 2.7 nM), and quinpirole at hD2L (EC(50) = 6.5 nM). SCH23390 (at hD1 and hD5) and spiperone, haloperidol, and clozapine (at hD2L) competitively antagonized the Ca(2+) response. Furthermore, the Ca(2+) assay served to screen suramin analogs for antagonistic activity at P2Y(2) receptors. Screening at dopamine receptors revealed LE300, a new lead for a dopamine receptor antagonist. Advantages of the assay include fast and simple 96- or 384-well plate format (high-throughput screening), use of a visible light-excitable fluorescent dye, applicability to a majority of GPCRs, and simultaneous analysis of distinct Ca(2+) fluxes.
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Rostom SA, Farghaly AM, Soliman FS, el-Semary MM, Elz S, Lehmann J. Synthesis and 5-HT2A antagonist activity of derivatives of the novel heterocycles indolo[3,2-d]pyrrolo[3,2-g]azecine and benzo[d]pyrrolo[3,2-g]azecine compared to the benz[d]indolo[2,3-g]azecine derivative LE 300. Arch Pharm (Weinheim) 2001; 334:241-7. [PMID: 11512275 DOI: 10.1002/1521-4184(200107)334:7<241::aid-ardp241>3.0.co;2-b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
An indolo[3,2-d]pyrrolo[3,2-g]azecine and a benzo[d]pyrrolo[3,2-g]azecine analogue of the potent dopamine receptor antagonist LE 300 (7-methyl-6,7,8,9,14,15-hexahydro-5H-benz[d]indolo[2,3-g]azecine) have been prepared in multi-step reactions via C-N bond cleavage of corresponding quaternary N-methylquinolizinium iodides. LE 300, the target compounds and two precursor quinolizines have been tested in vitro for antagonist activity at 5-HT2A receptors (rat tail artery) and H1 receptors (guinea-pig ileum), respectively. LE 300 and compound 19 (3,6-dimethyl-4,5,6,7,8,13-hexahydro-3H-benzo[d]pyrrolo[3,2-g]azecine) competitively inhibited 5-HT-induced contractions with similar nanomolar potency (pA2 = 8.32 and 8.01, respectively) but were less active than the reference antagonist ketanserin (pA2 = 9.55). Compound 19 displayed moderate H1-antihistaminic activity in the guinea-pig ileum assay (pA2 = 7.37).
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Affiliation(s)
- S A Rostom
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, A.R., Egypt
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Abstract
Monitor provides an insight into the latest developments in drug discovery through brief synopses of recent presentations and publications together with expert commentaries on the latest technologies. There are two sections: Molecules summarizes the chemistry and the pharmacological significance and biological relevance of new molecules reported in the literature and on the conference scene; Profiles offers commentary on promising lines of research, emerging molecular targets, novel technology, advances in synthetic and separation techniques and legislative issues.
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