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Knorr R, Böhrer P. Demonstration of NC(sp 2
)-centered stereofluctuations in a guanidine derivative and its cation. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rudolf Knorr
- Department Chemie; Ludwig-Maximilians-Universität München; Munich Germany
| | - Petra Böhrer
- Department Chemie; Ludwig-Maximilians-Universität München; Munich Germany
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Leachable diphenylguanidine from rubber closures used in pre-filled syringes: A case study to understand solid and solution interactions with oxytocin. Int J Pharm 2017; 532:491-501. [PMID: 28935251 DOI: 10.1016/j.ijpharm.2017.09.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/30/2017] [Accepted: 09/16/2017] [Indexed: 11/20/2022]
Abstract
Leachables derived from multi-component drug-device syringe systems can result in changes to the quality of drug products. Diphenylguanidine (DPG), a leachable released from styrene butadiene rubber syringe plungers, interacts with Oxytocin to form protein-adducts. This study investigated the mechanism and kinetics of this interaction in both solid and solution states through in-vitro tests and spectroscopic methods For solid state interaction, the protein-adducts with DPG were characterized using SEM, XRD, DSC, FTIR, 13C ss NMR, and dissolution analysis. For solution state interaction, LC-HRMS was used to assess stability of Oxytocin solutions in presence of various concentrations of DPG at 25°C and 40°C for 4 weeks. Moreover, molecular docking analysis was used to identify possible molecular configurations of the interaction.Results were consistent with the formation of a new solid state with distorted surface morphology for oxytocin-DPG adducts, in which the oxytocin carbonyl group(s) and the secondary amine groups of DPG interact. This interaction was also confirmed by molecular docking analysis through hydrogen bonding (2.31Å) and Van der Waal attraction (3.14Å). Moreover, LC-HRMS analysis revealed an increase in Oxytocin stability and suppression of Oxytocin dimerization by DPG. A potential reduction in the rate of Oxytocin dissolution from the formed adducts was indicative of its strong association with DPG. Hence, the leaching potential of DPG from rubber closures and plungers should be monitored and controlled to maintain the quality and stability of the pharmaceutical product.
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Nakata K, Siehl HU, Maas G, Fujio M. Computational study of substituent effects on the gas-phase stabilities of N-phenylguanidinium ions. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kazuhide Nakata
- Science Research Center; Hosei University; 2-17-1 Fujimi Chiyoda-ku Tokyo 102-8160 Japan
| | - Hans-Ullrich Siehl
- Institute for Organic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Gerhard Maas
- Institute for Organic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Mizue Fujio
- Institute for Materials Chemistry and Engineering; Kyushu University; 6-10-1 Hakozaki Higashi-ku Fukuoka 812-8581 Japan
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4
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Kleinpeter E, Koch A. Y-aromaticity – existing: yes or no? An answer given on the magnetic criterion (TSNMRS). Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Simova S, Radeglia R, Fanghänel E. 1,2,3-Triazabutadiene. XV. Einfluß der Substituenten auf die15N- und13C-chemischen Verschiebungen in Triazabutadienen und Azobenzenen. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19823240511] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Palát K, Waisser K, Exner O. Infrared intensities of benzene derivatives as a measure of the substituent resonance effect. J PHYS ORG CHEM 2001. [DOI: 10.1002/poc.416] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tanatani A, Yamaguchi K, Azumaya I, Fukutomi R, Shudo K, Kagechika H. N-Methylated Diphenylguanidines: Conformations, Propeller-Type Molecular Chirality, and Construction of Water-Soluble Oligomers with Multilayered Aromatic Structures. J Am Chem Soc 1998. [DOI: 10.1021/ja9806534] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aya Tanatani
- Contribution from the Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kentaro Yamaguchi
- Contribution from the Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Isao Azumaya
- Contribution from the Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Ryuuta Fukutomi
- Contribution from the Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Koichi Shudo
- Contribution from the Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Hiroyuki Kagechika
- Contribution from the Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Salehi A, Mei HY, Bruice TC. Synthesis and DNA-binding studies of new cationic guanidine and betaineamide tetraphenylporphyrins. Tetrahedron Lett 1991. [DOI: 10.1016/0040-4039(91)80804-f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Clement B, Kämpchen T. 15N-NMR-Studien der Tautomerie inN-monosubstituierten Amidinen und inN,N′-Diphenylguanidin. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/cber.19861190331] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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