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Mechanisms and reaction conditions of CO2 with o-aminobenzonitrile for the synthesis of quinazoline-2,4-dione. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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2
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Münzel T, Miller MR, Sørensen M, Lelieveld J, Daiber A, Rajagopalan S. Reduction of environmental pollutants for prevention of cardiovascular disease: it's time to act. Eur Heart J 2021; 41:3989-3997. [PMID: 33141181 PMCID: PMC7672530 DOI: 10.1093/eurheartj/ehaa745] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/24/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022] Open
Affiliation(s)
- Thomas Münzel
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Mark R Miller
- University/BHF Centre for Cardiovascular Sciences, University of Edinburgh, UK
| | - Mette Sørensen
- Diet, Genes and Environment, Danish Cancer Society Research Center, Copenhagen, Denmark.,Department of Natural Science and Environment, Roskilde University, Roskilde, Denmark
| | - Jos Lelieveld
- Max Planck Institute for Chemistry, Atmospheric Chemistry Department, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Sanjay Rajagopalan
- Division of Cardiovascular Medicine, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Case Western Reserve School of Medicine, 11100 Euclid Avenue, Cleveland, OH 44106, USA
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Mu X, Han L, Liu T. How and Why a Protic Ionic Liquid Efficiently Catalyzes Chemical Fixation of CO2 to Quinazoline-2,4-(1H,3H)-diones: Electrostatically Controlled Reactivity. J Phys Chem A 2019; 123:9394-9402. [DOI: 10.1021/acs.jpca.9b07838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xueli Mu
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, Shandong, China
| | - Lingli Han
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, Shandong, China
| | - Tao Liu
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, Shandong, China
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
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Sakamoto M, Minowa K, Kishimoto K, Nakajima J, Suzuki J, Moriyasu T, Fukaya H, Saito K. [LC/Tribrid Orbitrap Analysis of Phosphodiesterase-5 Inhibitors and Their Analogs as Adulterants in Dietary Supplements]. Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 2019; 60:96-107. [PMID: 31474657 DOI: 10.3358/shokueishi.60.96] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
LC/Tribrid Orbitrap was developed to determine phosphodiesterase-5 (PDE-5) inhibitors and their analogs as adulterants in dietary supplements. High-resolution MS/MS and MS3 spectra of PDE-5 inhibitors and their analogs were obtained by LC/Tribrid Orbitrap using both higher-energy collisional dissociation and collision-induced dissociation. We investigated dietary supplements that claim to enhance men's sexual performance, and detected PDE-5 inhibitors and their analogs. We also estimated the structures of the PDE-5 inhibitor analogs and the impurities of PDE-5 inhibitors and their analogs in the dietary supplements.
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Affiliation(s)
| | | | | | | | - Jin Suzuki
- Tokyo Metropolitan Institute of Public Health
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5
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Alwaal A, Al-Mannie R, Carrier S. Future prospects in the treatment of erectile dysfunction: focus on avanafil. DRUG DESIGN DEVELOPMENT AND THERAPY 2011; 5:435-43. [PMID: 22087063 PMCID: PMC3210072 DOI: 10.2147/dddt.s15852] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Indexed: 01/17/2023]
Abstract
The treatment of erectile dysfunction (ED) has been revolutionized in the last 15 years with the introduction of type 5 phosphodiesterase (PDE5) inhibitors. Their efficacy, safety, and ease of administration have made them first-line treatment for ED. This article reviews the current therapies available for ED, and the new PDE5 inhibitors that are being investigated. Furthermore, it examines all the current ED treatment options that are in different phases of development (including oral and topical pharmacotherapy, gene therapy, and tissue engineering). A special emphasis is on avanafil, a new PDE5 inhibitor that has been studied extensively in Phase I and II clinical trials and has undergone several Phase III trials. Avanafil is a promising medication for ED due to its favorable pharmacokinetics, safety, and efficacy.
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Affiliation(s)
- Amjad Alwaal
- Division of Urology, McGill University Health Centre, Montreal, Quebec, Canada
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6
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Hasegawa T, Takahashi K, Saijo M, Ishii T, Nagata T, Kurihara M, Haishima Y, Goda Y, Kawahara N. Isolation and Structural Elucidation of Cyclopentynafil and N-Octylnortadalafil Found in a Dietary Supplement. Chem Pharm Bull (Tokyo) 2009; 57:185-9. [DOI: 10.1248/cpb.57.185] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Ge X, Low MY, Zou P, Lin L, Yin SOS, Bloodworth BC, Koh HL. Structural elucidation of a PDE-5 inhibitor detected as an adulterant in a health supplement. J Pharm Biomed Anal 2008; 48:1070-5. [DOI: 10.1016/j.jpba.2008.08.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Revised: 08/08/2008] [Accepted: 08/11/2008] [Indexed: 11/28/2022]
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8
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Gur S, Sikka SC, Hellstrom WJG. Novel phosphodiesterase-5 (PDE5) inhibitors in the alleviation of erectile dysfunction due to diabetes and ageing-induced oxidative stress. Expert Opin Investig Drugs 2008; 17:855-64. [PMID: 18491987 DOI: 10.1517/13543784.17.6.855] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Diabetes and ageing are associated with erectile dysfunction (ED). Under these conditions, increased oxidative stress produces superoxide ions, which in turn suppresses the nitric oxide-cyclic guanosine monophosphate pathway. The phophodiesterase-5 (PDE5) inhibitors still remain ineffective in 15 - 57% of impotent men. OBJECTIVE To identify the efficacy of conventional and novel PDE5 inhibitors on oxidative stress involved in diabetes and ageing. METHODS An electronic search of the literature was conducted to review published information relating diabetes and ageing to ED and to cover late-stage developments of novel PDE5 inhibitors. RESULTS/CONCLUSION Safe and more efficacious alternatives that can modulate PDE5 levels in ED regarding oxidative stress conditions are needed. Included in this review are updates on the new PDE5 inhibitors avanafil, udenafil, SLx-2101, and mirodenafil.
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Affiliation(s)
- Serap Gur
- Tulane University Health Sciences Center, Department of Urology, 1430 Tulane Avenue, SL-42, New Orleans, LA 70112, USA
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9
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Uchiyama N, Saisho K, Kikura-Hanajiri R, Haishima Y, Goda Y. Determination of a New Type of Phosphodiesterase-5 Inhibitor, Thioquinapiperifil, in a Dietary Supplement Promoted for Sexual Enhancement. Chem Pharm Bull (Tokyo) 2008; 56:1331-4. [DOI: 10.1248/cpb.56.1331] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Lin RJ, Wu BN, Lo YC, An LM, Dai ZK, Lin YT, Tang CS, Chen IJ. A xanthine-based epithelium-dependent airway relaxant KMUP-3 (7-[2-[4-(4-nitrobenzene)piperazinyl]ethyl]-1,3-dimethylxanthine) increases respiratory performance and protects against tumor necrosis factor-alpha-induced tracheal contraction, involving nitric oxide release and expression of cGMP and protein kinase G. J Pharmacol Exp Ther 2005; 316:709-17. [PMID: 16234412 DOI: 10.1124/jpet.105.092171] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
KMUP-3 (7-[2-[4-(4-nitrobenzene)piperazinyl]ethyl]-1,3-dimethylxanthine) was investigated in guinea pig tracheal smooth muscle. Intratracheal instillation of tumor necrosis factor (TNF)-alpha (0.01 mg/kg/300 microl) induced bronchoconstriction, increases of lung resistance, and decreases of dynamic lung compliance. Instillation of KMUP-3 (0.5-2.0 mg/kg) reversed this situation. In isolated trachea precontracted with carbachol, KMUP-3 (10-100 microM)-caused relaxations were attenuated by epithelium removal and by pretreatments with an inhibitor of K(+) channel, tetraethylammonium (10 mm); K(ATP) channel, glibenclamide (1 microM); voltage-dependent K(+) channel, 4-aminopyridine (100 microM); Ca(2+)-dependent K(+) channel, charybdotoxin (0.1 microM) or apamin (1 microM); soluble guanylate cyclase (sGC), 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1one (ODQ, 1 microM); nitric-oxide (NO) synthase, N(omega)-nitro-L-arginine methyl ester (L-NAME, 100 microM); and adenylate cyclase, SQ 22536 [9-(terahydro-2-furanyl)-9H-purin-6-amine] (100 microM). KMUP-3 (0.01-100 microM) induced increases of cGMP and cAMP in primary culture of tracheal smooth muscle cells (TSMCs). The increase in cGMP by KMUP-3 was reduced by ODQ and L-NAME; the increase in cAMP was reduced by SQ 22536. Western blot analysis indicated that KMUP-3 (1 microM) induced expression of protein kinase A (PKA)(ri) and protein kinase G (PKG)(1alpha 1beta) in TSMCs.SQ 22536 inhibited KMUP-3-induced expression of (PKA)(ri). On the contrary, ODQ inhibited KMUP-3-induced expression of PKG(1alpha 1beta) In epithelium-intact trachea, KMUP-3 increased the NO release. Activation of sGC, NO release, and inhibition of phosphodiesterases in TSMCs by KMUP-3 may result in increases of intracellular cGMP and cAMP, which subsequently activate PKG and PKA, efflux of K(+) ion, and associated reduction in Ca(2+) influx in vitro, indicating the action mechanism to protect against TNF-alpha-induced airway dysfunction in vivo.
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Affiliation(s)
- Rong-Jyh Lin
- Institute of Medicine, College of Medicine, Kaohsiung Medical University, Taiwan
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11
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Nam KW, Je KH, Shin YJ, Kang SS, Mar W. Inhibitory effects of furoquinoline alkaloids fromMelicope confusa andDictamnus albus against human phosphodiesterase 5 (hPDE5A)in vitro. Arch Pharm Res 2005. [DOI: 10.1007/bf02969357 pmid: 16042076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
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12
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Nam KW, Je KH, Shin YJ, Kang SS, Mar W. Inhibitory effects of furoquinoline alkaloids fromMelicope confusa andDictamnus albus against human phosphodiesterase 5 (hPDE5A)in vitro. Arch Pharm Res 2005; 28:675-9. [PMID: 16042076 DOI: 10.1007/bf02969357] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Eight furoquinoline alkaloids were purified from two plants belonging to the Rutaceae family. Kokusaginine, skimmianine, evolitrine, and confusameline were purified from Melicope confusa, and haplopine, robustine, dictamine, and gamma-fagarine from Dictamnus albus. In this study, the eight furoquinoline alkaloids were examined for inhibitory potency against human phosphodiesterase 5 (hPDE5A) in vitro. DNA encoding the catalytic domain of human PDE5A was amplified from the mRNA of T24 cells by RT-PCR and was fused to GST in an expression vector. GST-tagged PDE5A was then purified by glutathione affinity chromatography and used in inhibition assays. Of the eight alkaloids, gamma-fagarine was the most potent inhibitor of PDE5A, and its single methoxy group at the C-8 position was shown to be critical for inhibitory activity. These results clearly illustrate the relationship between PDE5A inhibition and the methoxy group position in furoquinoline alkaloids.
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Affiliation(s)
- Kung-Woo Nam
- Jung-San Biotechnology Institute, 61 Dukjeul-Ri, Jeongnam-Myun, Whasoung-City, Kyunggi-Do, Korea
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13
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Rotella DP. Phosphodiesterase 5 inhibitors: current status and potential applications. Nat Rev Drug Discov 2002; 1:674-82. [PMID: 12209148 DOI: 10.1038/nrd893] [Citation(s) in RCA: 221] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Phosphodiesterase enzymes convert cyclic GMP and cyclic AMP to the corresponding nucleotide monophosphates. Phosphodiesterase 5 (PDE5) inhibition is now a widely accepted and efficacious therapeutic option for the treatment of erectile dysfunction in men, as a result of extensive clinical experience with sildenafil and other new PDE5 inhibitors. Research in the field continues at a substantial level to identify new, selective PDE5 inhibitors and to investigate their usefulness and activity in other areas. This review summarizes recent clinical trials with PDE5 inhibitors, advances in medicinal chemistry, and other activities and potential applications of this class of compounds.
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Affiliation(s)
- David P Rotella
- Hopewell Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543-5400, USA.
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14
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Chapter 6. Phosphodiesterase 5 inhibitors. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 2002. [DOI: 10.1016/s0065-7743(02)37007-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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