A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids
An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether d...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1973 |
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| Umfang: |
2 Tab. 5 |
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| Reproduktion: |
Wiley InterScience Backfile Collection 1832-2000 |
|---|---|
| Übergeordnetes Werk: |
in: Biological Mass Spectrometry - Chichester : Wiley Subscription Services, Inc., A Wiley Company, 7(1973) vom: März, Seite 277-281 |
| Übergeordnetes Werk: |
volume:7 ; year:1973 ; month:03 ; pages:277-281 ; extent:5 |
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NLEJ159252059 |
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| 520 | |a An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. | ||
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(DE-627)NLEJ159252059 DE-627 ger DE-627 rakwb eng A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids 1973 2 Tab. 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. Wiley InterScience Backfile Collection 1832-2000 Björkhem, Ingemar oth Gustafsson, Jan-Årke oth Sjövall, Jan oth in Biological Mass Spectrometry Chichester : Wiley Subscription Services, Inc., A Wiley Company 7(1973) vom: März, Seite 277-281 (DE-627)NLEJ159070465 (DE-600)2197367-2 0306-042X nnns volume:7 year:1973 month:03 pages:277-281 extent:5 http://dx.doi.org/10.1002/oms.1210070305 text/html Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-WIS GBV_NL_ARTICLE AR 7 1973 3 277-281 5 |
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(DE-627)NLEJ159252059 DE-627 ger DE-627 rakwb eng A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids 1973 2 Tab. 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. Wiley InterScience Backfile Collection 1832-2000 Björkhem, Ingemar oth Gustafsson, Jan-Årke oth Sjövall, Jan oth in Biological Mass Spectrometry Chichester : Wiley Subscription Services, Inc., A Wiley Company 7(1973) vom: März, Seite 277-281 (DE-627)NLEJ159070465 (DE-600)2197367-2 0306-042X nnns volume:7 year:1973 month:03 pages:277-281 extent:5 http://dx.doi.org/10.1002/oms.1210070305 text/html Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-WIS GBV_NL_ARTICLE AR 7 1973 3 277-281 5 |
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(DE-627)NLEJ159252059 DE-627 ger DE-627 rakwb eng A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids 1973 2 Tab. 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. Wiley InterScience Backfile Collection 1832-2000 Björkhem, Ingemar oth Gustafsson, Jan-Årke oth Sjövall, Jan oth in Biological Mass Spectrometry Chichester : Wiley Subscription Services, Inc., A Wiley Company 7(1973) vom: März, Seite 277-281 (DE-627)NLEJ159070465 (DE-600)2197367-2 0306-042X nnns volume:7 year:1973 month:03 pages:277-281 extent:5 http://dx.doi.org/10.1002/oms.1210070305 text/html Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-WIS GBV_NL_ARTICLE AR 7 1973 3 277-281 5 |
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(DE-627)NLEJ159252059 DE-627 ger DE-627 rakwb eng A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids 1973 2 Tab. 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. Wiley InterScience Backfile Collection 1832-2000 Björkhem, Ingemar oth Gustafsson, Jan-Årke oth Sjövall, Jan oth in Biological Mass Spectrometry Chichester : Wiley Subscription Services, Inc., A Wiley Company 7(1973) vom: März, Seite 277-281 (DE-627)NLEJ159070465 (DE-600)2197367-2 0306-042X nnns volume:7 year:1973 month:03 pages:277-281 extent:5 http://dx.doi.org/10.1002/oms.1210070305 text/html Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-WIS GBV_NL_ARTICLE AR 7 1973 3 277-281 5 |
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(DE-627)NLEJ159252059 DE-627 ger DE-627 rakwb eng A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids 1973 2 Tab. 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. Wiley InterScience Backfile Collection 1832-2000 Björkhem, Ingemar oth Gustafsson, Jan-Årke oth Sjövall, Jan oth in Biological Mass Spectrometry Chichester : Wiley Subscription Services, Inc., A Wiley Company 7(1973) vom: März, Seite 277-281 (DE-627)NLEJ159070465 (DE-600)2197367-2 0306-042X nnns volume:7 year:1973 month:03 pages:277-281 extent:5 http://dx.doi.org/10.1002/oms.1210070305 text/html Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-WIS GBV_NL_ARTICLE AR 7 1973 3 277-281 5 |
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a novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-δ5-steroids |
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A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids |
| abstract |
An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. |
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An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. |
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An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ159252059</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707002601.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070201s1973 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ159252059</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1973</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="b">2 Tab.</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">5</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C19 and C21 steroids having a 3β-hydroxy-Δ5 structure and an oxo group at C-17 or C-20. The nature of this fragment was investigated by the use of perdeuteriotrimethylsilyl ether derivatives and of [4-14C], [3-18O], [4,4-2H2] and [2,2,4,4-2H] labelled derivatives of 3β-hydroxy-5-androsten-17-one and 3β-hydroxy-5-pregnen-20-one. Evidence is presented to show that the neutral fragment of mass 56 is composed of carbon atoms 1, 2 and 3, the oxygen at C-3 and four hydrogen atoms. During the fragmentation process, the trimethylsilyl group and one of the hydrogens at C-2 are transferred to the fragment that carries the charge.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Wiley InterScience Backfile Collection 1832-2000</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Björkhem, Ingemar</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Gustafsson, Jan-Årke</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Sjövall, Jan</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Biological Mass Spectrometry</subfield><subfield code="d">Chichester : Wiley Subscription Services, Inc., A Wiley Company</subfield><subfield code="g">7(1973) vom: März, Seite 277-281</subfield><subfield code="w">(DE-627)NLEJ159070465</subfield><subfield code="w">(DE-600)2197367-2</subfield><subfield code="x">0306-042X</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:7</subfield><subfield code="g">year:1973</subfield><subfield code="g">month:03</subfield><subfield code="g">pages:277-281</subfield><subfield code="g">extent:5</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1002/oms.1210070305</subfield><subfield code="q">text/html</subfield><subfield code="z">Deutschlandweit zugänglich</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-WIS</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">7</subfield><subfield code="j">1973</subfield><subfield code="c">3</subfield><subfield code="h">277-281</subfield><subfield code="g">5</subfield></datafield></record></collection>
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