1
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Murugan S, Zhong HJ, Wu CY, Pan HW, Chen C, Lee GH. Camphorsulfonic Acid-Mediated One-Pot Tandem Consecutive via the Ugi Four-Component Reaction for the Synthesis of Functionalized Indole and 2-Quinolone Derivatives by Switching Solvents. ACS OMEGA 2022; 7:5713-5729. [PMID: 35224332 PMCID: PMC8867550 DOI: 10.1021/acsomega.1c05460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
A camphorsulfonic acid-mediated one-pot tandem consecutive approach was developed to synthesize functionalized indole and 2-quinolone derivatives from the Ugi four-component reaction by switching solvents. A reaction of the Ugi adduct in an aprotic solvent undergoes 5-exo-trig cyclization to form an indole ring. In a protic solvent, however, the Ugi adduct undergoes an alkyne-carbonyl metathesis reaction to form a 2-quinolone ring.
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Affiliation(s)
- Sivan
Perumal Murugan
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
| | - Hong-Jie Zhong
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
| | - Chih-Yu Wu
- Department
of Nursing, Tzu Chi University of Science
and Technology, Hualien 970302, Taiwan
| | - Hao-Wei Pan
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
| | - Chinpiao Chen
- Department
of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974301, Taiwan
- Department
of Nursing, Tzu Chi University of Science
and Technology, Hualien 970302, Taiwan
| | - Gene-Hsian Lee
- Instrumentation
Center, College of Science, National Taiwan
University, Taipei 10617, Taiwan
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2
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Hu T, Lückemeier L, Daniliuc C, Glorius F. Ru-NHC-Catalyzed Asymmetric Hydrogenation of 2-Quinolones to Chiral 3,4-Dihydro-2-Quinolones. Angew Chem Int Ed Engl 2021; 60:23193-23196. [PMID: 34460127 PMCID: PMC8596914 DOI: 10.1002/anie.202108503] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/20/2021] [Indexed: 11/10/2022]
Abstract
Direct enantioselective hydrogenation of unsaturated compounds to generate chiral three-dimensional motifs is one of the most straightforward and important approaches in synthetic chemistry. We realized the Ru(II)-NHC-catalyzed asymmetric hydrogenation of 2-quinolones under mild reaction conditions. Alkyl-, aryl- and halogen-substituted optically active dihydro-2-quinolones were obtained in high yields with moderate to excellent enantioselectivities. The reaction provides an efficient and atom-economic pathway to construct simple chiral 3,4-dihydro-2-quinolones. The desired products could be further reduced to tetrahydroquinolines and octahydroquinolones.
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Affiliation(s)
- Tianjiao Hu
- Westfälische Wilhelms-Universität MünsterOrganisch-Chemisches InstitutCorrensstrasse 3648149MünsterGermany
| | - Lukas Lückemeier
- Westfälische Wilhelms-Universität MünsterOrganisch-Chemisches InstitutCorrensstrasse 3648149MünsterGermany
| | - Constantin Daniliuc
- Westfälische Wilhelms-Universität MünsterOrganisch-Chemisches InstitutCorrensstrasse 3648149MünsterGermany
| | - Frank Glorius
- Westfälische Wilhelms-Universität MünsterOrganisch-Chemisches InstitutCorrensstrasse 3648149MünsterGermany
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3
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Hu T, Lückemeier L, Daniliuc C, Glorius F. Ru‐NHC‐katalysierte asymmetrische Hydrierung von 2‐Chinolonen zu chiralen 3,4‐Dihydro‐2‐chinolonen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tianjiao Hu
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Deutschland
| | - Lukas Lückemeier
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Deutschland
| | - Constantin Daniliuc
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Deutschland
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Deutschland
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4
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One-pot approach: Tandem consecutive Ugi-4CR/ACM-type reaction towards the synthesis of functionalised quinoline-2(1H)-one scaffolds. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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5
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Zhou S, Huang G, Chen G. Synthesis and biological activities of drugs for the treatment of osteoporosis. Eur J Med Chem 2020; 197:112313. [PMID: 32335412 DOI: 10.1016/j.ejmech.2020.112313] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/06/2020] [Accepted: 04/06/2020] [Indexed: 12/15/2022]
Abstract
Osteoporosis is an asymptomatic progressive disease. With the improvement of people's living standard and the aging of population, osteoporosis and its fracture have become one of the main diseases threatening the aging society. The serious medical and social burden caused by this has aroused wide public concern. Osteoporosis is listed as one of the three major diseases of the elderly. At present, the drugs for osteoporosis include bone resorption inhibitors and bone formation promoters. The purpose of these anti-osteoporosis drugs is to balance osteoblast bone formation and osteoclast bone resorption. With the development of anti-osteoporosis drugs, new anti osteoporosis drugs have been designed and synthesized. There are many kinds of new compounds with anti osteoporosis activity, but most of them are concentrated on the original drugs with anti osteoporosis activity, or the natural products with anti-osteoporosis activity are extracted from the natural products for structural modification to obtain the corresponding derivatives or analogues. These target compounds showed good ALP activity in vitro and in vivo, promoted osteoblast differentiation and mineralization, or had anti TRAP activity, inhibited osteoclast absorption. This work attempts to systematically review the studies on the synthesis and bioactivity of anti-osteoporosis drugs in the past 10 years. The structure-activity relationship was discussed, which provided a reasonable idea for the design and development of new anti-osteoporosis drugs.
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Affiliation(s)
- Shiyang Zhou
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, China
| | - Gangliang Huang
- Active Carbohydrate Research Institute, Chongqing Key Laboratory of Green Synthesis and Application, College of Chemistry, Chongqing Normal University, Chongqing, 401331, China.
| | - Guangying Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, China.
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6
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Martin SC, Ball ZT. Aminoquinoline-Rhodium(II) Conjugates as Src-Family SH3 Ligands. ACS Med Chem Lett 2019; 10:1380-1385. [PMID: 31620222 DOI: 10.1021/acsmedchemlett.9b00309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/09/2019] [Indexed: 11/28/2022] Open
Abstract
High-affinity, selective ligands are sought for a variety of biomolecules but are particularly difficult to generate in the protein-protein interaction space. Rhodium(II) conjugates provide a structure-based approach to improved affinity and specificity for targeting protein-protein interactions such as SH3 domains. In this study of small-molecule-rhodium conjugates, we report a potent ligand 4b (K d of 27 nM) for the Lyn SH3 domain, based on an aminoquinoline fragment. The results demonstrate robust affinity gains possible from even modest small-molecule leads through cooperative inorganic-organic binding, based on specific histidine interactions. A docking study sheds light on the structural basis of binding and supports a previously proposed binding model.
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Affiliation(s)
- Samuel C. Martin
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
| | - Zachary T. Ball
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
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7
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Zaugg C, Schmidt G, Abele S. Scalable and Practical Synthesis of Halo Quinolin-2(1H)-ones and Quinolines. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cornelia Zaugg
- Chemistry Process R&D, Actelion Pharmaceuticals Ltd., Gewerbestrasse 16, CH-4123 Allschwil, Switzerland
| | - Gunther Schmidt
- Chemistry Process R&D, Actelion Pharmaceuticals Ltd., Gewerbestrasse 16, CH-4123 Allschwil, Switzerland
| | - Stefan Abele
- Chemistry Process R&D, Actelion Pharmaceuticals Ltd., Gewerbestrasse 16, CH-4123 Allschwil, Switzerland
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8
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Wang D, Wang Y, Zhao J, Li L, Miao L, Wang D, Sun H, Yu P. A highly practical and convenient halogenation of fused heterocyclic N-oxides. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.083] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Substituted quinolinones 27.* Regioselective synthesis of pyrazolo-, oxazolo-, and triazepinoquinoline derivatives. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1813-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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10
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Hu Z, Wong PC, Gilligan PJ, Han W, Pabbisetty KB, Bozarth JM, Crain EJ, Harper T, Luettgen JM, Myers JE, Ramamurthy V, Rossi KA, Sheriff S, Watson CA, Wei A, Zheng JJ, Seiffert DA, Wexler RR, Quan ML. Discovery of a Potent Parenterally Administered Factor XIa Inhibitor with Hydroxyquinolin-2(1H)-one as the P2' Moiety. ACS Med Chem Lett 2015; 6:590-5. [PMID: 26005539 DOI: 10.1021/acsmedchemlett.5b00066] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 04/08/2015] [Indexed: 12/20/2022] Open
Abstract
Structure-activity relationship optimization of phenylalanine P1' and P2' regions with a phenylimidazole core resulted in a series of potent FXIa inhibitors. Introducing 4-hydroxyquinolin-2-one as the P2' group enhanced FXIa affinity and metabolic stability. Incorporation of an N-methyl piperazine amide group to replace the phenylalanine improved both FXIa potency and aqueous solubility. Combination of the optimization led to the discovery of FXIa inhibitor 13 with a FXIa K i of 0.04 nM and an aPTT EC2x of 1.0 μM. Dose-dependent efficacy (EC50 of 0.53 μM) was achieved in the rabbit ECAT model with minimal bleeding time prolongation.
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Affiliation(s)
- Zilun Hu
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Pancras C. Wong
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Paul J. Gilligan
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Wei Han
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Kumar B. Pabbisetty
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Jeffrey M. Bozarth
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Earl J. Crain
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Timothy Harper
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Joseph M. Luettgen
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Joseph E. Myers
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | | | - Karen A. Rossi
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Steven Sheriff
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Carol A. Watson
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Anzi Wei
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Joanna J. Zheng
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Dietmar A. Seiffert
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Ruth R. Wexler
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Mimi L. Quan
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
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11
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12
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Novel, potent and selective 17β-hydroxysteroid dehydrogenase type 2 inhibitors as potential therapeutics for osteoporosis with dual human and mouse activities. Eur J Med Chem 2014; 83:317-37. [DOI: 10.1016/j.ejmech.2014.06.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 06/12/2014] [Accepted: 06/17/2014] [Indexed: 11/19/2022]
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13
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Mphahlele MJ, Lesenyeho LG. Halogenated Quinolines as Substrates for the Palladium-Catalyzed Cross-Coupling Reactions to Afford Substituted Quinolines. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.932] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Malose J. Mphahlele
- Department of Chemistry, College of Science; Engineering and Technology, University of South Africa; Pretoria 0003; South Africa
| | - Lehlohonolo G. Lesenyeho
- Department of Chemistry, College of Science; Engineering and Technology, University of South Africa; Pretoria 0003; South Africa
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14
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Substituted quinolinones. 18. 3-Acetyl-4-methylthioquinolin-2(1H)-one as useful synthon intermediate for synthesis of some new quinolinones. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0678-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Al-Soud YA, Marchais-Oberwinkler S, Frotscher M, Hartmann RW. Synthesis and Biological Evaluation of Phenyl Substituted 1H-1,2,4-Triazoles as Non-Steroidal Inhibitors of 17β-Hydroxysteroid Dehydrogenase Type 2. Arch Pharm (Weinheim) 2012; 345:610-21. [DOI: 10.1002/ardp.201200025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 03/13/2012] [Accepted: 03/15/2012] [Indexed: 11/12/2022]
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16
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Henn C, Einspanier A, Marchais-Oberwinkler S, Frotscher M, Hartmann RW. Lead Optimization of 17β-HSD1 Inhibitors of the (Hydroxyphenyl)naphthol Sulfonamide Type for the Treatment of Endometriosis. J Med Chem 2012; 55:3307-18. [DOI: 10.1021/jm201735j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Claudia Henn
- Pharmaceutical and Medicinal
Chemistry, Saarland University, Campus
C2 3, D-66041 Saarbrücken, Germany
- Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Campus C2 3, 66123 Saarbrücken,
Germany
| | - Almuth Einspanier
- Faculty of Veterinary
Medicine, Institute of Physiological Chemistry, An den Tierkliniken
1, 04103 Leipzig, Germany
| | | | - Martin Frotscher
- Pharmaceutical and Medicinal
Chemistry, Saarland University, Campus
C2 3, D-66041 Saarbrücken, Germany
| | - Rolf W. Hartmann
- Pharmaceutical and Medicinal
Chemistry, Saarland University, Campus
C2 3, D-66041 Saarbrücken, Germany
- Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Campus C2 3, 66123 Saarbrücken,
Germany
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17
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Spadaro A, Negri M, Marchais-Oberwinkler S, Bey E, Frotscher M. Hydroxybenzothiazoles as new nonsteroidal inhibitors of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1). PLoS One 2012; 7:e29252. [PMID: 22242164 PMCID: PMC3252304 DOI: 10.1371/journal.pone.0029252] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 11/23/2011] [Indexed: 01/25/2023] Open
Abstract
17β-estradiol (E2), the most potent estrogen in humans, known to be involved in the development and progession of estrogen-dependent diseases (EDD) like breast cancer and endometriosis. 17β-HSD1, which catalyses the reduction of the weak estrogen estrone (E1) to E2, is often overexpressed in breast cancer and endometriotic tissues. An inhibition of 17β-HSD1 could selectively reduce the local E2-level thus allowing for a novel, targeted approach in the treatment of EDD. Continuing our search for new nonsteroidal 17β-HSD1 inhibitors, a novel pharmacophore model was derived from crystallographic data and used for the virtual screening of a small library of compounds. Subsequent experimental verification of the virtual hits led to the identification of the moderately active compound 5. Rigidification and further structure modifications resulted in the discovery of a novel class of 17β-HSD1 inhibitors bearing a benzothiazole-scaffold linked to a phenyl ring via keto- or amide-bridge. Their putative binding modes were investigated by correlating their biological data with features of the pharmacophore model. The most active keto-derivative 6 shows IC₅₀-values in the nanomolar range for the transformation of E1 to E2 by 17β-HSD1, reasonable selectivity against 17β-HSD2 but pronounced affinity to the estrogen receptors (ERs). On the other hand, the best amide-derivative 21 shows only medium 17β-HSD1 inhibitory activity at the target enzyme as well as fair selectivity against 17β-HSD2 and ERs. The compounds 6 and 21 can be regarded as first benzothiazole-type 17β-HSD1 inhibitors for the development of potential therapeutics.
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Affiliation(s)
- Alessandro Spadaro
- Pharmaceutical and Medicinal Chemistry, Saarland University, Saarbrücken, Germany
- ElexoPharm GmbH, Saarbrücken, Germany
| | - Matthias Negri
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany
| | | | | | - Martin Frotscher
- Pharmaceutical and Medicinal Chemistry, Saarland University, Saarbrücken, Germany
- * E-mail:
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18
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Discovery of a new class of bicyclic substituted hydroxyphenylmethanones as 17β-hydroxysteroid dehydrogenase type 2 (17β-HSD2) inhibitors for the treatment of osteoporosis. Eur J Med Chem 2012; 47:1-17. [DOI: 10.1016/j.ejmech.2011.09.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 08/31/2011] [Accepted: 09/02/2011] [Indexed: 11/23/2022]
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19
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Xu K, Al-Soud YA, Wetzel M, Hartmann RW, Marchais-Oberwinkler S. Triazole ring-opening leads to the discovery of potent nonsteroidal 17β-hydroxysteroid dehydrogenase type 2 inhibitors. Eur J Med Chem 2011; 46:5978-90. [PMID: 22037253 DOI: 10.1016/j.ejmech.2011.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 09/30/2011] [Accepted: 10/04/2011] [Indexed: 10/16/2022]
Abstract
17β-Hydroxysteroid dehydrogenase type 2 (17β-HSD2) catalyzes the oxidation of the highly potent steroids: the estrogen estradiol (E2) and the androgen testosterone (T) to the less active estrone and androstenedione, respectively. Inhibition of this enzyme may help maintain the local E2 level in bone tissue when the circulating E2 level drops and is therefore a novel and promising approach for the treatment of osteoporosis. In this work, a series of new nonsteroidal and achiral 17β-HSD2 inhibitors, namely N-benzyl-diphenyl-3(or 4)-carboxamide and N-benzyl-5-phenyl-thiophene-2-carboxamide was designed and the compounds were synthesized in a two to three steps reaction. A small library was built applying parallel synthesis. Highly potent 17β-HSD2 inhibitors could be identified in the thiophene-2-carboxamide class with IC(50) in the low nanomolar range. These compounds also showed a good selectivity profile toward 17β-HSD1 and toward the estrogen receptors α and β. The most interesting 17β-HSD2 inhibitor identified in this study is the 5-(2-fluoro-3-methoxyphenyl)-N-(3-hydroxybenzyl)-N-methylthiophene-2-carboxamide 6w displaying an IC(50) of 61 nM and a selectivity factor of 73 toward 17β-HSD1.
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Affiliation(s)
- Kuiying Xu
- Pharmaceutical and Medicinal Chemistry, Saarland University, Germany
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20
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Klein T, Henn C, Negri M, Frotscher M. Structural basis for species specific inhibition of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1): computational study and biological validation. PLoS One 2011; 6:e22990. [PMID: 21857977 PMCID: PMC3153478 DOI: 10.1371/journal.pone.0022990] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 07/07/2011] [Indexed: 11/19/2022] Open
Abstract
17β-Hydroxysteroid dehydrogenase type 1 (17β-HSD1) catalyzes the reduction of estrone to estradiol, which is the most potent estrogen in humans. Inhibition of 17β-HSD1 and thereby reducing the intracellular estradiol concentration is thus a promising approach for the treatment of estrogen dependent diseases. In the past, several steroidal and non-steroidal inhibitors of 17β-HSD1 have been described but so far there is no cocrystal structure of the latter in complex with 17β-HSD1. However, a distinct knowledge of active site topologies and protein-ligand interactions is a prerequisite for structure-based drug design and optimization. An elegant strategy to enhance this knowledge is to compare inhibition values obtained for one compound toward ortholog proteins from various species, which are highly conserved in sequence and differ only in few residues. In this study the inhibitory potencies of selected members of different non-steroidal inhibitor classes toward marmoset 17β-HSD1 were determined and the data were compared with the values obtained for the human enzyme. A species specific inhibition profile was observed in the class of the (hydroxyphenyl)naphthols. Using a combination of computational methods, including homology modelling, molecular docking, MD simulation, and binding energy calculation, a reasonable model of the three-dimensional structure of marmoset 17β-HSD1 was developed and inhibition data were rationalized on the structural basis. In marmoset 17β-HSD1, residues 190 to 196 form a small α-helix, which induces conformational changes compared to the human enzyme. The docking poses suggest these conformational changes as determinants for species specificity and energy decomposition analysis highlighted the outstanding role of Asn152 as interaction partner for inhibitor binding. In summary, this strategy of comparing the biological activities of inhibitors toward highly conserved ortholog proteins might be an alternative to laborious x-ray or site-directed mutagenesis experiments in certain cases. Additionally, it facilitates inhibitor design and optimization by offering new information on protein-ligand interactions.
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Affiliation(s)
- Tobias Klein
- Pharmaceutical and Medicinal Chemistry, Saarland University, Saarbrücken, Germany
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany
| | - Claudia Henn
- Pharmaceutical and Medicinal Chemistry, Saarland University, Saarbrücken, Germany
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany
| | - Matthias Negri
- Pharmaceutical and Medicinal Chemistry, Saarland University, Saarbrücken, Germany
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany
| | - Martin Frotscher
- Pharmaceutical and Medicinal Chemistry, Saarland University, Saarbrücken, Germany
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21
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Negri M, Recanatini M, Hartmann RW. Computational investigation of the binding mode of bis(hydroxylphenyl)arenes in 17β-HSD1: molecular dynamics simulations, MM-PBSA free energy calculations, and molecular electrostatic potential maps. J Comput Aided Mol Des 2011; 25:795-811. [DOI: 10.1007/s10822-011-9464-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 07/26/2011] [Indexed: 01/26/2023]
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22
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Kim HJ, Jeong EM, Lee KJ. Using Morita-Baylis-Hillman acetates of 2-azidobenzaldehydes for the synthesis of 2-alkoxy-3-cyanomethylquinolines and alkyl quinoline-3-carboxylates. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.667] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Oster A, Klein T, Henn C, Werth R, Marchais‐Oberwinkler S, Frotscher M, Hartmann RW. Bicyclic Substituted Hydroxyphenylmethanone Type Inhibitors of 17 β‐Hydroxysteroid Dehydrogenase Type 1 (17 β‐HSD1): The Role of the Bicyclic Moiety. ChemMedChem 2011; 6:476-87. [DOI: 10.1002/cmdc.201000457] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 01/01/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Alexander Oster
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
| | - Tobias Klein
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
| | - Claudia Henn
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
| | - Ruth Werth
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
| | - Sandrine Marchais‐Oberwinkler
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
| | - Martin Frotscher
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
| | - Rolf W. Hartmann
- Pharmaceutical and Medicinal Chemistry, Saarland University, & the Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C2 3, P.O. Box 151150, 66123 Saarbrücken (Germany), Fax: (+49) 681‐302‐70308
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24
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Zimmer C, Hafner M, Zender M, Ammann D, Hartmann RW, Vock CA. N-(Pyridin-3-yl)benzamides as selective inhibitors of human aldosterone synthase (CYP11B2). Bioorg Med Chem Lett 2011; 21:186-90. [DOI: 10.1016/j.bmcl.2010.11.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Accepted: 11/04/2010] [Indexed: 10/18/2022]
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25
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Starčević Š, Brožič P, Turk S, Cesar J, Lanišnik Rižner T, Gobec S. Synthesis and Biological Evaluation of (6- and 7-Phenyl) Coumarin Derivatives as Selective Nonsteroidal Inhibitors of 17β-Hydroxysteroid Dehydrogenase Type 1. J Med Chem 2010; 54:248-61. [PMID: 21138273 DOI: 10.1021/jm101104z] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Štefan Starčević
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Petra Brožič
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Samo Turk
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Jožko Cesar
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Tea Lanišnik Rižner
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Stanislav Gobec
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
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Oster A, Hinsberger S, Werth R, Marchais-Oberwinkler S, Frotscher M, Hartmann RW. Bicyclic substituted hydroxyphenylmethanones as novel inhibitors of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) for the treatment of estrogen-dependent diseases. J Med Chem 2010; 53:8176-86. [PMID: 20977238 DOI: 10.1021/jm101073q] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Estradiol (E2), the most important estrogen in humans, is involved in the initiation and progression of estrogen-dependent diseases such as breast cancer and endometriosis. Its local production in the target cell is regulated by 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1), which catalyzes E2-formation by reduction of the weak estrogen estrone (E1). Because the enzyme is expressed in the diseased tissues, inhibition of 17β-HSD1 is considered as a promising therapy for the treatment of estrogen-dependent diseases. For the development of novel inhibitors, a structure- and ligand-based design strategy was applied, resulting in bicyclic substituted hydroxyphenylmethanones. In vitro testing revealed high inhibitory potencies toward human placental 17β-HSD1. Compounds were further evaluated with regard to selectivity (17β-HSD2, estrogen receptors ERα and ERβ), intracellular activity (T47D cells), and metabolic stability. The most promising compounds, 14 and 15, showed IC(50) values in the low nanomolar range in the cell-free and cellular assays (8-27 nM), more than 30-fold selectivity toward 17β-HSD2 and no affinity toward the ERs. The data obtained make these inhibitors interesting candidates for further preclinical evaluation.
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Affiliation(s)
- Alexander Oster
- Pharmaceutical and Medicinal Chemistry, Saarland University, and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus C23, D-66123 Saarbrücken, Germany
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27
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Zhang Y, Li P, Wang L. Iron-catalyzed tandem reactions of aldehydes, terminal alkynes, and primary amines as a strategy for the synthesis of quinoline derivatives. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.417] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Hu Q, Jagusch C, Hille UE, Haupenthal J, Hartmann RW. Replacement of Imidazolyl by Pyridyl in Biphenylmethylenes Results in Selective CYP17 and Dual CYP17/CYP11B1 Inhibitors for the Treatment of Prostate Cancer. J Med Chem 2010; 53:5749-58. [DOI: 10.1021/jm100317b] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Qingzhong Hu
- Pharmaceutical and Medicinal Chemistry and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University, Campus C23, D-66123 Saarbrücken, Germany
| | - Carsten Jagusch
- Pharmaceutical and Medicinal Chemistry and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University, Campus C23, D-66123 Saarbrücken, Germany
| | - Ulrike E. Hille
- Pharmaceutical and Medicinal Chemistry and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University, Campus C23, D-66123 Saarbrücken, Germany
| | - Jörg Haupenthal
- Pharmaceutical and Medicinal Chemistry and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University, Campus C23, D-66123 Saarbrücken, Germany
| | - Rolf W. Hartmann
- Pharmaceutical and Medicinal Chemistry and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University, Campus C23, D-66123 Saarbrücken, Germany
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29
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Hu Q, Yin L, Jagusch C, Hille UE, Hartmann RW. Isopropylidene Substitution Increases Activity and Selectivity of Biphenylmethylene 4-Pyridine Type CYP17 Inhibitors. J Med Chem 2010; 53:5049-53. [DOI: 10.1021/jm100400a] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qingzhong Hu
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), D-66123 Saarbrücken, Germany
| | - Lina Yin
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), D-66123 Saarbrücken, Germany
- ElexoPharm GmbH, Campus A1, D-66123 Saarbrücken, Germany
| | - Carsten Jagusch
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), D-66123 Saarbrücken, Germany
| | - Ulrike E. Hille
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), D-66123 Saarbrücken, Germany
| | - Rolf W. Hartmann
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, and Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), D-66123 Saarbrücken, Germany
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30
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Oster A, Klein T, Werth R, Kruchten P, Bey E, Negri M, Marchais-Oberwinkler S, Frotscher M, Hartmann RW. Novel estrone mimetics with high 17β-HSD1 inhibitory activity. Bioorg Med Chem 2010; 18:3494-505. [DOI: 10.1016/j.bmc.2010.03.065] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Revised: 03/23/2010] [Accepted: 03/25/2010] [Indexed: 10/19/2022]
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31
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Hu Q, Negri M, Olgen S, Hartmann R. The Role of Fluorine Substitution in Biphenyl Methylene Imidazole-Type CYP17 Inhibitors for the Treatment of Prostate Carcinoma. ChemMedChem 2010; 5:899-910. [DOI: 10.1002/cmdc.201000065] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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32
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Kimmel R, Kafka S, Kosmrlj J. Selective formation of glycosidic linkages of N-unsubstituted 4-hydroxyquinolin-2-(1H)-ones. Carbohydr Res 2010; 345:768-79. [PMID: 20206337 DOI: 10.1016/j.carres.2010.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2009] [Revised: 01/25/2010] [Accepted: 01/29/2010] [Indexed: 11/16/2022]
Abstract
A comparative study for selective glucosylation of N-unsubstituted 4-hydroxyquinolin-2(1H)-ones into 4-(tetra-O-acetyl-beta-D-glucopyranosyloxy)quinolin-2(1H)-ones is reported. Four glycosyl donors including tetra-O-acetyl-alpha-D-glucopyranosyl bromide, beta-D-glucose pentaacetate, glucose tetraacetate and tetra-O-acetyl-alpha-D-glucopyranosyl trichloroacetimidate were tested, along with different promoters and reaction conditions. The best results were obtained with tetra-O-acetyl-alpha-D-glucopyranosyl bromide with Cs(2)CO(3) in CH(3)CN. In some cases the 4-O-glucosylation of the quinolinone ring was accompanied by 2-O-glucosylation yielding the corresponding 2,4-bis(tetra-O-acetyl-beta-D-glucopyranosyloxy)quinoline. Next, 4-(tetra-O-acetyl-beta-D-glucopyranosyloxy)quinolin-2(1H)-ones were deacetylated into 4-(beta-D-glucopyranosyloxy)quinolin-2(1H)-ones with Et(3)N in MeOH. In some instances the deacetylation was accompanied by the sugar-aglycone bond cleavage. Structure elucidation, complete assignment of proton and carbon resonances as well as assignment of anomeric configuration for all the products under investigation were performed by 1D and 2D NMR spectroscopy.
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Affiliation(s)
- Roman Kimmel
- Department of Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Zlin, Czech Republic
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33
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Zhang Z, Zhang Q, Sun S, Xiong T, Liu Q. Domino Ring-Opening/Recyclization Reactions of Doubly Activated Cyclopropanes as a Strategy for the Synthesis of Furoquinoline Derivatives. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604276] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Zhang Z, Zhang Q, Sun S, Xiong T, Liu Q. Domino Ring-Opening/Recyclization Reactions of Doubly Activated Cyclopropanes as a Strategy for the Synthesis of Furoquinoline Derivatives. Angew Chem Int Ed Engl 2007; 46:1726-9. [PMID: 17397086 DOI: 10.1002/anie.200604276] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhiguo Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
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35
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Chapter 12 Quinolines. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s1460-1567(07)80061-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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36
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Salem OIA, Frotscher M, Scherer C, Neugebauer A, Biemel K, Streiber M, Maas R, Hartmann RW. Novel 5α-Reductase Inhibitors: Synthesis, Structure−Activity Studies, and Pharmacokinetic Profile of Phenoxybenzoylphenyl Acetic Acids. J Med Chem 2005; 49:748-59. [PMID: 16420060 DOI: 10.1021/jm050728w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel substituted benzoyl benzoic acids and phenylacetic acids 1-14 have been synthesized and evaluated for inhibition of rat and human steroid 5alpha-reductase isozymes 1 and 2. The compounds turned out to be potent and selective human type 2 enzyme inhibitors, exhibiting IC(50) values in the nanomolar range. The phenylacetic acid derivatives were more potent than the analogous benzoic acids. Bromination in the 4-position of the phenoxy moiety led to the strongest inhibitor in this class (12; IC(50) = 5 nM), which was equipotent to finasteride. Since oral absorption is essential for a potential drug, 12 was further examined. In the parallel artificial membrane permeation assay (PAMPA) it turned out to be a good permeator, whereas it was a medium permeator in Caco2 cells. After oral administration (40 mg/kg) to rats a high bioavailability and a biological half-life of 5.5 h were observed, making it a promising candidate for clinical evaluation.
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Affiliation(s)
- Ola I A Salem
- Pharmaceutical and Medicinal Chemistry, Saarland University, D-66041 Saarbrücken, Germany
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37
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Ruda M, Kann N, Gordon S, Bergman J, Nelson W, Agback P, Hagberg L, Koehler KF. Solid-Phase Synthesis of a 6-Phenylquinolin-2(1H)-one Library Directed toward Nuclear Hormone Receptors. ACTA ACUST UNITED AC 2005; 7:567-73. [PMID: 16004500 DOI: 10.1021/cc049841i] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A library of 6-phenylquinolin-2(1H)-ones with diversity at position 1 and the ortho, meta, and para positions of the pendant phenyl ring has been synthesized using solid-phase parallel synthetic techniques. A key step in the synthesis of the library is a tandem alkylation cleavage in which diversity can be introduced at position 1 simultaneously to the cleavage from the resin. The yields of this step were significantly improved over what has previously been reported by addition of cesium carbonate to scavenge the acid that is formed during the reaction. Furthermore, we have shown that the solid support linkage is tolerant to Suzuki coupling and etherification reaction conditions and that selective cleavage of the linkage can take place in the presence of esters. The resulting 6-phenylquinolin-2(1H)-one library was screened against a panel of nuclear hormone receptors (androgen, estrogen alpha and beta isoforms, glucocorticoid, mineralocorticoid, and progesterone). Certain members of this library display moderate affinity for several of these receptors, and consequently, the 6-phenylquinolin-2(1H)-one core of the library may be considered a privileged structure for nuclear hormone receptors. In contrast, other members of the library display high selectivity for a particular receptor. The highest affinity ligand (9{2,1,1}) possesses an affinity of 330 nM for the androgen receptor, whereas the most selective ligand (9{2,4,1}) displays an affinity of 900 nM for the androgen receptor and a selectivity of 140-fold over the next highest affinity receptor.
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Affiliation(s)
- Marcus Ruda
- Karo Bio AB, Novum, SE-141 57 Huddinge, Sweden.
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38
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Occhiato EG, Guarna A, Danza G, Serio M. Selective non-steroidal inhibitors of 5 alpha-reductase type 1. J Steroid Biochem Mol Biol 2004; 88:1-16. [PMID: 15026079 DOI: 10.1016/j.jsbmb.2003.10.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2003] [Accepted: 10/07/2003] [Indexed: 11/30/2022]
Abstract
The enzyme 5 alpha-reductase (5 alpha R) catalyses the reduction of testosterone (T) into the more potent androgen dihydrotestosterone (DHT). The abnormal production of DHT is associated to pathologies of the main target organs of this hormone: the prostate and the skin. Benign prostatic hyperplasia (BPH), prostate cancer, acne, androgenetic alopecia in men, and hirsutism in women appear related to the DHT production. Two isozymes of 5 alpha-reductase have been cloned, expressed and characterized (5 alpha R-1 and 5 alpha R-2). They share a poor homology, have different chromosomal localization, enzyme kinetic parameters, and tissue expression patterns. Since 5 alpha R-1 and 5 alpha R-2 are differently distributed in the androgen target organs, a different involvement of the two isozymes in the pathogenesis of prostate and skin disorders can be hypothesized. High interest has been paid to the synthesis of inhibitors of 5 alpha-reductase for the treatment of DHT related pathologies, and the selective inhibition of any single isozyme represents a great challenge for medical and pharmaceutical research in order to have more specific drugs. At present, no 5 alpha R-1 inhibitor is marketed for the treatment of 5 alpha R-1 related pathologies but pharmaceutical research is very active in this field. This paper will review the major classes of 5 alpha R inhibitors focusing in particular on non-steroidal inhibitors and on structural features that enhance the selectivity versus the type 1 isozyme. Biological tests to assess the inhibitory activity towards the two 5 alpha R isozymes will be also discussed.
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Affiliation(s)
- Ernesto G Occhiato
- Dipartimento di Chimica Organica Ugo Schiff, Polo Scientifico Università di Firenze, Via Della Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
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39
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Palladium in Quinoline Synthesis. ADVANCES IN HETEROCYCLIC CHEMISTRY 2003. [DOI: 10.1016/s0065-2725(03)84001-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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40
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Chen W, Thiboutot D, Zouboulis CC. Cutaneous androgen metabolism: basic research and clinical perspectives. J Invest Dermatol 2002; 119:992-1007. [PMID: 12445184 DOI: 10.1046/j.1523-1747.2002.00613.x] [Citation(s) in RCA: 145] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The skin, especially the pilosebaceous unit composed of sebaceous glands and hair follicles, can synthesize androgens de novo from cholesterol or by locally converting circulating weaker androgens to more potent ones. As in other classical steroidogenic organs, the same six major enzyme systems are involved in cutaneous androgen metabolism, namely steroid sulfatase, 3beta-hydroxy-steroid dehydrogenase, 17beta-hydroxysteroid dehydrogenase, steroid 5alpha-reductase, 3alpha-hydroxysteroid dehydrogenase, and aromatase. Steroid sulfatase, together with P450 side chain cleavage enzyme and P450 17-hydroxylase, was found to reside in the cytoplasm of sebocytes and keratinocytes. Strong steroid sulfatase immunoreactivity was observed in the lesional skin but not in unaffected skin of acne patients. 3beta-hydroxysteroid dehydrogenase has been mainly immunolocalized to sebaceous glands, with the type 1 being the key cutaneous isoenzyme. The type 2 17beta-hydroxysteroid dehydrogenase isoenzyme predominates in sebaceous glands and exhibits greater reductive activity in glands from facial areas compared with acne nonprone areas. In hair follicles, 17beta-hydroxysteroid dehydrogenase was identified mainly in outer root sheath cells. The type 1 5alpha-reductase mainly occurs in the sebaceous glands, whereby the type II isoenzyme seems to be localized in the hair follicles. 3alpha-hydroxysteroid dehydrogenase converts dihydrotestosterone to 3alpha-androstanediol, and the use of 3alpha-androstanediol glucuronide serum level to reflect the hyperandrogenic state in hirsute women may be a reliable parameter, especially for idiopathic hirsutism. In acne patients it is still controversial if 3alpha-androstanediol glucuronide or androsterone glucuronide could serve as suitable serum markers for measuring androgenicity. Aromatase, localized to sebaceous glands and to both outer as well as inner root sheath cells of anagen terminal hair follicles, may play a "detoxifying" role by removing excess androgens. Pharmacologic development of more potent specific isoenzyme antagonists may lead to better clinical treatment or even prevention of androgen-dependent dermatoses.
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Affiliation(s)
- WenChieh Chen
- Department of Dermatology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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41
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Picard F, Schulz T, Hartmann RW. 5-Phenyl substituted 1-methyl-2-pyridones and 4'-substituted biphenyl-4-carboxylic acids. synthesis and evaluation as inhibitors of steroid-5alpha-reductase type 1 and 2. Bioorg Med Chem 2002; 10:437-48. [PMID: 11741792 DOI: 10.1016/s0968-0896(01)00293-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The synthesis of a series of 5-phenyl substituted 1-methyl-2-pyridones (I) and 4'-substituted biphenyl-4-carboxylic acids (II) as novel A-C ring steroidomimetic inhibitors of 5alpha-reductase (5alphaR) is described. Compounds 1-4 (I) were synthesized by palladium catalyzed cross coupling (Ishikura) reaction between diethyl(3-pyridyl)borane and aryl halides (1b-4b) followed by alpha-oxidation with sodium ferrocyanate of the 1-methyl-pyridinium salt. Inhibitors II (5-18) were obtained either by two successive Friedel-Crafts acylations from biphenyl (5a-10a) followed by saponification to yield the corresponding carboxylic acids (5-10) or by Suzuki cross coupling reaction to give the 4'-substituted biphenyl-4-carbaldehydes 11a-18a. The latter compounds were subjected to a Lindgren oxidation to yield compounds 11-18. The compounds were tested for inhibitory activity toward human and rat 5alphaR1 and 2. The test compounds inhibited 5alphaR, showing a broad range of inhibitory potencies. The best compound in series I was the N-(dicyclohexyl)-4-(1,2-dihydro-1-methyl-2-oxopyrid-5-yl)benzamide 4 exhibiting an IC(50) value for the human type 2 enzyme of 10 microM. In series II, the most active compound toward human type 2 isozyme was the 4'-(dicyclohexyl)acetyl-4-biphenyl carboxylic acid (10; IC(50)=220nM). Both series showed only marginal activity toward the human type 1 isozyme. In conclusion, the biphenyl carboxylic acids (II) are more appropriate for 5alphaR inhibition than the 5-phenyl-1-methyl-2-pyridones (I). Especially the 4'-carbonyl compounds 5-10 represent new lead structures for the development of novel human type 2 inhibitors.
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Affiliation(s)
- Franck Picard
- 8.5 Pharmaceutical and Medicinal Chemistry, Saarland University, PO Box 15 11 50, D-66041, Saarbrücken, Germany
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42
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Fan G, Mar W, Park MK, Choi EW, Kim K, Kim S. A novel class of inhibitors for steroid 5alpha-reductase: synthesis and evaluation of umbelliferone derivatives. Bioorg Med Chem Lett 2001; 11:2361-3. [PMID: 11527731 DOI: 10.1016/s0960-894x(01)00429-2] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A series of umbelliferone derivatives was prepared and their 5alpha-reductase type 1 inhibitory activities were evaluated in cell culture systems. Our studies have identified a new series of potent 5alpha-reductase type 1 inhibitors and provided the basis for further development for the treatment of human endocrine disorders associated with overproduction of DHT by 5alpha-reductase type 1. The preliminary structure-activity relationship was described to elucidate the essential structural requirements.
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Affiliation(s)
- G Fan
- Natural Products Research Institute, Seoul National University, 28 Yungun, Jongro, Seoul 110-460, South Korea
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43
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Reichert W, Michel A, Hartmann RW, Jose J. Stable expression of human 5alpha-reductase type II in COS1 cells due to chromosomal gene integration: a novel tool for inhibitor identification. J Steroid Biochem Mol Biol 2001; 78:275-84. [PMID: 11595508 DOI: 10.1016/s0960-0760(01)00092-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Inhibitors of human 5alpha-reductase type II are promising drug candidates for the treatment of benign prostatic hyperplasia which is associated with high prostatic DHT levels. In this study we describe the evaluation of potential inhibitors in a new cell assay. First a plasmid (pRcCMV-5alphaII) for the expression of human 5alpha-reductase type II was constructed by the use of the vector pRcCMV and transfected into the African green monkey fibroblast-like cell line COS1. By selection with G418 sulfate, ten COS1 single cell clones were obtained of which three stably exhibited high 5alpha-reductase activity. One single cell clone (COS1-5alphaIIST) was selected for further investigations. By Southern blot analysis, fluorescence in situ hybridization (FISH) and comparative PCR experiments it turned out that the expression plasmid pRcCMV-5alphaII has been integrated into the chromosome, resulting in a long-term stable expression of the foreign 5alpha-reductase gene. The newly established cell line was used for testing novel compounds on their inhibitory effect on human 5alpha-reductase type II. Using this whole cell assay, inhibitors with IC(50) values in the nanomolar range could be identified.
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Affiliation(s)
- W Reichert
- FR 8.5 Pharmaceutical and Medicinal Chemistry, University of the Saarland, P.O. Box 151150, D-66041, Saarbrücken, Germany
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Hartmann RW, Hector M, Haidar S, Ehmer PB, Reichert W, Jose J. Synthesis and evaluation of novel steroidal oxime inhibitors of P450 17 (17 alpha-hydroxylase/C17-20-lyase) and 5 alpha-reductase types 1 and 2. J Med Chem 2000; 43:4266-77. [PMID: 11063622 DOI: 10.1021/jm001008m] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
17 alpha-Hydroxylase/C17-20-lyase (P450 17, CYP 17) and 5 alpha-reductase are the key enzymes in androgen biosynthesis and targets for the treatment of prostate cancer and benign prostatic hyperplasia. In the search of inhibitors for both enzymes, 23 pregnenolone- or progesterone-based steroids were synthesized bearing an oxime group connected directly or via a spacer to the steroidal D-ring. Tested for inhibition of human and rat P450 17, some pregnenolone (9, 11, 14) and a series of progesterone compounds (17-20) turned out to be highly active inhibitors of the human enzyme. The most active compound was Z-21-hydroxyiminopregna-5, 17(20)-dien-3 beta-ol (9) showing K(i) values of 44 and 3.4 nM for the human and rat enzymes, respectively, and a type II UV-difference spectrum indicating a coordinate bond between the oxime group and the heme iron. In contrast to the pregnenolones which showed no inhibition of 5 alpha-reductase isozymes 1 and 2, the progesterones 16, 17, 20, 21, and 23 showed marked inhibition, especially toward the type 2 enzyme. Compounds 17 and 20 were identified as potent dual inhibitors of both P450 17 and 5 alpha-reductase. Tested for selectivity, the most potent P450 17 inhibitors 9, 10, and 14 showed no or only marginal inhibition of P450 arom, P450 scc, and P450 TxA(2). Selected compounds were tested for inhibition of the target enzymes using whole-cell assays. Compounds 9-11 strongly inhibited P450 17 being coexpressed with NADPH-P450 reductase in E. coli cells, and 16, 20, and 23 markedly inhibited 5 alpha-reductase expressed in HEK 293 cells. Tested for in vivo activity, 9 (0.019 mmol/kg) decreased the plasma testosterone concentration in rats after 2 and 6 h by 57% and 44%.
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Affiliation(s)
- R W Hartmann
- Pharmaceutical and Medicinal Chemistry, University of the Saarland, P.O. Box 151150, D-66041 Saarbrücken, Germany.
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Hartmann RW, Reichert M. New nonsteroidal steroid 5 alpha-reductase inhibitors. Syntheses and structure-activity studies on carboxamide phenylalkyl-substituted pyridones and piperidones. Arch Pharm (Weinheim) 2000; 333:145-53. [PMID: 10863799 DOI: 10.1002/(sici)1521-4184(20005)333:5<145::aid-ardp145>3.0.co;2-q] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the search for nonsteroidal inhibitors of 5 alpha-reductase for the treatment of benign prostatic hyperplasia (BPH), we synthesized diisopropyl (1a-8a) and tert-butyl (1b-8b) benzamides, as well as ethyl benzoates (1c, 3c), which were substituted in 4 position via variable alkyl spacer (n = 0: 1-4, n = 1: 5, 7 and n = 3: 6, 8) with a 1-methyl-2-pyridone (1, 2, 5, 6) or a 1-methyl-2-piperidone (3, 4, 7, 8) moiety mimicking steroidal ring A. The directly connected benzamides (1a-4a, 1b-4b) and benzoates (1c, 3c) were obtained by palladium-catalysed coupling reaction of diethyl(3-pyridyl)-borane with 4-bromobenzoic acid derivatives, followed by alpha-oxidation of the 1-methyl-pyridinium salt and subsequent separation of the regioisomers. Catalytic hydrogenation of the pyridones (1, 2) led to the piperidones (3, 4). The preparation of the benzamides with a methylene (5, 7) and a propylene spacer (6, 8), respectively, started with the reduction of the keto group of 5-benzoyl-1,2-dihydro-1-methyl-2(1H)-pyridone and catalytic hydrogenation of the alkene obtained by Wittig reaction of 5-formyl-1,2-dihydro-1-methyl-2(1H)-pyridone with (2-phenylethyl)triphenylphosphonium bromide, respectively. The phenyl ring was functionalized by Friedel-Crafts reaction, haloform cleavage to give the acid, formation of the acid chloride, and subsequent treatment with the appropriate amines. Again, catalytic hydrogenation of the pyridones (5, 6) led to the piperidones (7, 8). The 5 alpha-reductase inhibitory properties were determined using rat ventral prostate, as well as human BPH tissue as enzyme source, 1 beta-2 beta-[3H]testosterone as substrate and a HPLC procedure for the separation of dihydrotestosterone (DHT). Tested at a concentration of 100 microM, the inhibition values of 1-8 ranged from 0-79%. Significant differences were observed between rat and human enzyme. The most active compound was ethyl 4-(1-methyl-2-oxopiperid-5-yl)benzoate 3c (68%) for the human enzyme and N,N-bis(1-methylethyl)-4-[3-(1,2-dihydro-1-methyl-2-oxopyrid-5-yl) propyl] benzamide 6a (79%) for the rat enzyme.
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Affiliation(s)
- R W Hartmann
- Pharmazeutische und Medizinische Chemie, Universität des Saarlandes, Saarbrücken, Germany
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