Fast atom bombardment mass spectrometry of cisplatin analogs
Cisplatin analogs of the type PtLALB are thermally unstable, non‐volatile and highly insoluble. For these platinum coordination complexes, LA is a bidentate amine ligand and LB is a bidentate carboxylate ligand. Mass spectral data for structural elucidation of these compounds are absent in the liter...
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Veröffentlicht in: | Biological Mass Spectrometry 1986-01, Vol.13 (1), p.25-32 |
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description | Cisplatin analogs of the type PtLALB are thermally unstable, non‐volatile and highly insoluble. For these platinum coordination complexes, LA is a bidentate amine ligand and LB is a bidentate carboxylate ligand. Mass spectral data for structural elucidation of these compounds are absent in the literature because they are difficult to ionize. Nevertheless, a routine fast atom bombardment mass spectroscopic method has been developed utilizing the mixed solvent system of dimethyl sulfoxide: thioglycerol in a ratio of about 1:3 v/v. Using both positive and negative ionization modes, structurally significant ions were observed from representative molecules of the two named classes of compounds. [M H]− ions were observed in both structural classes while [M + H]+ ions were observed only in the PtLALB class of compounds. Additional ions observed are rationalized in terms of the condensed‐phase solution chemistry of the cisplatin analogs and the mixed solvent system when exposed to the fast atom beam. The two mechanisms causing ionization of the cisplatin analogs in the condensed phase appear to be: (i) displacement of the ligands with dimethyl‐sulfoxide and (ii) addition of chloride and the ionized solvents [dimentyl sulfoxide+H]+ and [thioglycerolH]− to the cisplatin analogs. It is hypothesized that the addition reactions of the ionized solvents occur because of the differences in the basicity of the solvents and their reactivity in forming platinum(II)‐sulfur bonds. |
doi_str_mv | 10.1002/bms.1200130106 |
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T.</creator><creatorcontrib>Siegel, Marshall M. ; Bitha, Panayota ; Child, Ralph G. ; Hlavka, Joseph J. ; Lin, Yang-I ; Chang, Ted. T.</creatorcontrib><description>Cisplatin analogs of the type PtLALB are thermally unstable, non‐volatile and highly insoluble. For these platinum coordination complexes, LA is a bidentate amine ligand and LB is a bidentate carboxylate ligand. Mass spectral data for structural elucidation of these compounds are absent in the literature because they are difficult to ionize. Nevertheless, a routine fast atom bombardment mass spectroscopic method has been developed utilizing the mixed solvent system of dimethyl sulfoxide: thioglycerol in a ratio of about 1:3 v/v. Using both positive and negative ionization modes, structurally significant ions were observed from representative molecules of the two named classes of compounds. [M H]− ions were observed in both structural classes while [M + H]+ ions were observed only in the PtLALB class of compounds. Additional ions observed are rationalized in terms of the condensed‐phase solution chemistry of the cisplatin analogs and the mixed solvent system when exposed to the fast atom beam. The two mechanisms causing ionization of the cisplatin analogs in the condensed phase appear to be: (i) displacement of the ligands with dimethyl‐sulfoxide and (ii) addition of chloride and the ionized solvents [dimentyl sulfoxide+H]+ and [thioglycerolH]− to the cisplatin analogs. It is hypothesized that the addition reactions of the ionized solvents occur because of the differences in the basicity of the solvents and their reactivity in forming platinum(II)‐sulfur bonds.</description><identifier>ISSN: 1052-9306</identifier><identifier>ISSN: 0887-6134</identifier><identifier>EISSN: 1096-9888</identifier><identifier>EISSN: 2376-3868</identifier><identifier>DOI: 10.1002/bms.1200130106</identifier><identifier>PMID: 2937478</identifier><identifier>CODEN: BEMSEN</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>Analysis ; Biological and medical sciences ; Cisplatin - analysis ; General pharmacology ; Mass Spectrometry ; Medical sciences ; Molecular Conformation ; Pharmacology. Drug treatments ; Structure-Activity Relationship</subject><ispartof>Biological Mass Spectrometry, 1986-01, Vol.13 (1), p.25-32</ispartof><rights>Copyright © 1986 John Wiley & Sons, Ltd.</rights><rights>1987 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4076-bc2585947fe405d60799d80413823eb9eb127c108a90791d0af093cceec96f543</citedby><cites>FETCH-LOGICAL-c4076-bc2585947fe405d60799d80413823eb9eb127c108a90791d0af093cceec96f543</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fbms.1200130106$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fbms.1200130106$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,4024,27923,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7931227$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/2937478$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Siegel, Marshall M.</creatorcontrib><creatorcontrib>Bitha, Panayota</creatorcontrib><creatorcontrib>Child, Ralph G.</creatorcontrib><creatorcontrib>Hlavka, Joseph J.</creatorcontrib><creatorcontrib>Lin, Yang-I</creatorcontrib><creatorcontrib>Chang, Ted. T.</creatorcontrib><title>Fast atom bombardment mass spectrometry of cisplatin analogs</title><title>Biological Mass Spectrometry</title><addtitle>Biol. Mass Spectrom</addtitle><description>Cisplatin analogs of the type PtLALB are thermally unstable, non‐volatile and highly insoluble. For these platinum coordination complexes, LA is a bidentate amine ligand and LB is a bidentate carboxylate ligand. Mass spectral data for structural elucidation of these compounds are absent in the literature because they are difficult to ionize. Nevertheless, a routine fast atom bombardment mass spectroscopic method has been developed utilizing the mixed solvent system of dimethyl sulfoxide: thioglycerol in a ratio of about 1:3 v/v. Using both positive and negative ionization modes, structurally significant ions were observed from representative molecules of the two named classes of compounds. [M H]− ions were observed in both structural classes while [M + H]+ ions were observed only in the PtLALB class of compounds. Additional ions observed are rationalized in terms of the condensed‐phase solution chemistry of the cisplatin analogs and the mixed solvent system when exposed to the fast atom beam. The two mechanisms causing ionization of the cisplatin analogs in the condensed phase appear to be: (i) displacement of the ligands with dimethyl‐sulfoxide and (ii) addition of chloride and the ionized solvents [dimentyl sulfoxide+H]+ and [thioglycerolH]− to the cisplatin analogs. It is hypothesized that the addition reactions of the ionized solvents occur because of the differences in the basicity of the solvents and their reactivity in forming platinum(II)‐sulfur bonds.</description><subject>Analysis</subject><subject>Biological and medical sciences</subject><subject>Cisplatin - analysis</subject><subject>General pharmacology</subject><subject>Mass Spectrometry</subject><subject>Medical sciences</subject><subject>Molecular Conformation</subject><subject>Pharmacology. Drug treatments</subject><subject>Structure-Activity Relationship</subject><issn>1052-9306</issn><issn>0887-6134</issn><issn>1096-9888</issn><issn>2376-3868</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1986</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkDtP5DAUha0ViNduux1SCkSX4dpO_JBoAPEUzBaA2M5yHGeVJU4G34xg_j1GMxpERWVL5zvH1kfIbwoTCsCOqoATygAoBwriB9mhoEWulVIbH_eS5ZqD2Ca7iP8BuEqlLbLFNJeFVDvk-MLimNlxCFk1hMrGOvh-zIJFzHDm3RiH4Me4yIYmcy3OOju2fWZ72w3_8CfZbGyH_tfq3COPF-cPZ1f57Z_L67OT29wVIEVeOVaqUhey8QWUtQCpda2goFwx7ivtK8qko6CsThGtwTaguXPeOy2asuB75HC5O4vDy9zjaEKLzned7f0wRyOFLNOESOBkCbo4IEbfmFlsg40LQ8F86DJJl_nUlQr7q-V5FXy9xld-Un6wyi062zXR9snCGpOaU8ZkwvQSe207v_jmUXN6d__lC_my2-Lo39ZdG5-NkFyW5ml6aQQDOv17emOm_B0qMJDm</recordid><startdate>198601</startdate><enddate>198601</enddate><creator>Siegel, Marshall M.</creator><creator>Bitha, Panayota</creator><creator>Child, Ralph G.</creator><creator>Hlavka, Joseph J.</creator><creator>Lin, Yang-I</creator><creator>Chang, Ted. T.</creator><general>John Wiley & Sons, Ltd</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>198601</creationdate><title>Fast atom bombardment mass spectrometry of cisplatin analogs</title><author>Siegel, Marshall M. ; Bitha, Panayota ; Child, Ralph G. ; Hlavka, Joseph J. ; Lin, Yang-I ; Chang, Ted. T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4076-bc2585947fe405d60799d80413823eb9eb127c108a90791d0af093cceec96f543</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1986</creationdate><topic>Analysis</topic><topic>Biological and medical sciences</topic><topic>Cisplatin - analysis</topic><topic>General pharmacology</topic><topic>Mass Spectrometry</topic><topic>Medical sciences</topic><topic>Molecular Conformation</topic><topic>Pharmacology. Drug treatments</topic><topic>Structure-Activity Relationship</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Siegel, Marshall M.</creatorcontrib><creatorcontrib>Bitha, Panayota</creatorcontrib><creatorcontrib>Child, Ralph G.</creatorcontrib><creatorcontrib>Hlavka, Joseph J.</creatorcontrib><creatorcontrib>Lin, Yang-I</creatorcontrib><creatorcontrib>Chang, Ted. T.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Biological Mass Spectrometry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Siegel, Marshall M.</au><au>Bitha, Panayota</au><au>Child, Ralph G.</au><au>Hlavka, Joseph J.</au><au>Lin, Yang-I</au><au>Chang, Ted. T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fast atom bombardment mass spectrometry of cisplatin analogs</atitle><jtitle>Biological Mass Spectrometry</jtitle><addtitle>Biol. Mass Spectrom</addtitle><date>1986-01</date><risdate>1986</risdate><volume>13</volume><issue>1</issue><spage>25</spage><epage>32</epage><pages>25-32</pages><issn>1052-9306</issn><issn>0887-6134</issn><eissn>1096-9888</eissn><eissn>2376-3868</eissn><coden>BEMSEN</coden><abstract>Cisplatin analogs of the type PtLALB are thermally unstable, non‐volatile and highly insoluble. For these platinum coordination complexes, LA is a bidentate amine ligand and LB is a bidentate carboxylate ligand. Mass spectral data for structural elucidation of these compounds are absent in the literature because they are difficult to ionize. Nevertheless, a routine fast atom bombardment mass spectroscopic method has been developed utilizing the mixed solvent system of dimethyl sulfoxide: thioglycerol in a ratio of about 1:3 v/v. Using both positive and negative ionization modes, structurally significant ions were observed from representative molecules of the two named classes of compounds. [M H]− ions were observed in both structural classes while [M + H]+ ions were observed only in the PtLALB class of compounds. Additional ions observed are rationalized in terms of the condensed‐phase solution chemistry of the cisplatin analogs and the mixed solvent system when exposed to the fast atom beam. The two mechanisms causing ionization of the cisplatin analogs in the condensed phase appear to be: (i) displacement of the ligands with dimethyl‐sulfoxide and (ii) addition of chloride and the ionized solvents [dimentyl sulfoxide+H]+ and [thioglycerolH]− to the cisplatin analogs. It is hypothesized that the addition reactions of the ionized solvents occur because of the differences in the basicity of the solvents and their reactivity in forming platinum(II)‐sulfur bonds.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><pmid>2937478</pmid><doi>10.1002/bms.1200130106</doi><tpages>8</tpages></addata></record> |
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subjects | Analysis Biological and medical sciences Cisplatin - analysis General pharmacology Mass Spectrometry Medical sciences Molecular Conformation Pharmacology. Drug treatments Structure-Activity Relationship |
title | Fast atom bombardment mass spectrometry of cisplatin analogs |
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