EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Capillary gas chromatography positive and negative ion chemical ionization mass spectrometry on pyrrolizidine alkaloids of senecio inaequidens using ammonia and hydroxyl ions as the reagent species



Capillary gas chromatography positive and negative ion chemical ionization mass spectrometry on pyrrolizidine alkaloids of senecio inaequidens using ammonia and hydroxyl ions as the reagent species



Journal of Natural Products (Lloydia) 52(1): 32-41



The composition of the pyrrolizidine alkaloid [hapatotoxic] (PA) fraction of Senecio inaequidens was studied by capillary gc and ms. Different ionization modes were used: electron impact (ei), positive ion chemical ionization (pici) with NH3, and negative ion chemical ionization (nici) with NH3 and hydroxyl ions as reagent species. Nineteen constituents were characterized and sixteen of them identified by these techniques. A new structure, desacetyl doronine [3] (mol wt 417), was elucidated. The application of NH3 picims and OH- nicims to otonecine PA derivatives and NH3 nicims to retronecine and otonecine PA derivatives is reported and discussed for the first time.

(PDF emailed within 1 workday: $29.90)

Accession: 007077936

Download citation: RISBibTeXText



Related references

Ammonium positive-ion and hydroxide negative-ion chemical ionization gas chromatography-mass spectrometry for the identification of pyrrolizidine alkaloids in Eupatorium rotundifolium L. var. ovatum. Journal of Chromatography 428(2): 352-356, 1988

Determination of pyrrolizidine alkaloids in Senecio inaequidens D.C. by capillary gas chromatography. Journal of Chromatography 349(1): 23-29, 1985

Capillary gas chromatography fourier transform ir spectroscopy of pyrrolizidine alkaloids of senecio inaequidens dc. Journal of Chromatography 473(1): 161-170, 1989

Positive and electron capture negative ion methane chemical ionization mass spectrometry of pyrrolizidine alkaloids. Biomedical Mass Spectrometry 11(9): 455-461, 1984

Capillary gas chromatography-Fourier transform infrared spectroscopy of pyrrolizidine alkaloids of Senecio inaequidens DC. Journal of chromatography8, 473(1): 161-170, 1989

Investigation of pyrrolizidine alkaloids in plant material by means of positive ion and negative ion chemical ionization gas chromatography mass spectroscopy. Planta Medica (5): 427, 1986

Capillary gas chromatography/mass spectrometry of cholesteryl esters with negative ammonia chemical ionization. Biomedical & Environmental Mass Spectrometry 14(3): 131-140, 1987

Negative ion chemical ionization mass spectroscopy 6 analysis of poly cyclic aromatic hydro carbons by pulsed positive negative ion chemical ionization mass spectrometry with oxygen as the reagent gas. 1980

Negative ion chemical ionization mass spectrometry of pyrrolizidine alkaloids with hydroxide reactant ion. Analytical Chemistry 55(7): 1036-1040, 1983

Detection of sarin and soman in a complex airborne matrix by capillary column ammonia chemical ionization gas chromatography mass spectrometry and gas chromatography tandem mass spectrometry. Journal of Chromatography 541(1-2): 121-130, 1991

Characterization of polar substituted polycyclic aromatic compounds using high-resolution gas chromatography/mass spectrometry negative ion chemical ionization and positive and negative ion thermospray liquid chromatography/mass spectrometry. Biomedical & Environmental Mass Spectrometry 16(1-12): 461-467, 1988

Comparative investigation of disposition of 3,4- methamphetamine , in the rat and the mouse by capillary gas chromatography-mass spectrometry assay based on perfluorotributylamine-enhanced ammonia positive ion chemical ionization. Journal of Pharmaceutical & Biomedical Analysis 10(9): 657-665, 1992

Detection of hydroxy fatty acids in biological samples using capillary gas chromatography in combination with positive and negative chemical ionization mass spectrometry. Lipids 15(12): 1044-1050, 1980

Determination of pyrrolizidine alkaloids in senecio species by liquid chromatography/thermospray-mass spectrometry and liquid chromatography/nuclear magnetic resonance spectroscopy. Planta Medica 65(6): 562-566, 2007

Capillary column gas chromatography ammonia and deuterated ammonia chemical ionization mass spectrometry of sulfur vesicants. Journal of Chromatography 600(2): 267-272, 1992