Use of doubly protonated molecules in the analysis of cathedulins in crude extracts of khat (Catha edulis) by liquid chromatography/serial mass spectrometry

Rapid Communications in Mass Spectrometry

Volumn 17, Issue 14, 2003, Pages 1553-1564

  Kite, Geoffrey C ^a   Ismail, Muna ^b   Simmonds, Monique S J ^a   Houghton, Peter J ^b  

^a ROYAL BOTANIC GARDENS   (United Kingdom)

^b KING'S COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ACYLATION; EXTRACTION; IONS; LIQUID CHROMATOGRAPHY; MASS SPECTROMETERS; MASS SPECTROMETRY; MOLECULES; PROTONATION;

ACYLATIONS; CRUDE EXTRACT; ELECTROSPRAY CAPILLARY; LIQUID CHROMATOGRAPHY - MASS SPECTROMETRIES; MASS SPECTROMETRIC ANALYSIS; METHANOLIC EXTRACTS; PROTONATED MOLECULES; PROTONATED SPECIES; SINGLY CHARGED; SOURCE CONDITIONS;

ELECTROSPRAY IONIZATION;

CATHA EDULIS EXTRACT; CATHEDULIN; UNCLASSIFIED DRUG;

ACYLATION; ARTICLE; CATHA EDULIS; LIQUID CHROMATOGRAPHY; MASS SPECTROMETER; MASS SPECTROMETRY; MOLECULAR WEIGHT; NONHUMAN; PROTON TRANSPORT;

CATHA EDULIS;

EID: 0038269752     PISSN: 09514198     EISSN: None     Source Type: Journal    
DOI: 10.1002/rcm.1085     Document Type: Article

References (21)

1. Krikorian AD. J. Ethnopharmacol. 1984; 12: 115.
2. Kalix P, Braenden O. Pharmacol. Rev. 1985; 37: 149.
3. Halbach H. Bull. World Health Organization 1972; 47: 21.
4. Griffiths P. Qat Use in London. Home Office Paper 26, 1998.
5. Pantelis C, Hindler CG, Taylor JC. Psychol. Med. 1989; 19: 657.
6. Szendrei K. Bull. Narcotics 1980; 32: 5.
7. Schorno X, Steinegger E. Experientia 1979; 35: 572.
8. Crombie L. Bull. Narcotics 1980; 32: 37.
9. Baxter RL, Crombie L, Simmonds DJ, Whiting DA, Braenden OJ, Szendrei K. J. Chem. Soc. Perkin Trans. I 1979, 2965.
10. Patel NB. E. Afr. Med. J. 2000; 77: 329.
11. Baxter RL, Crombie WML, Crombie L, Simmonds DJ, Whiting DA, Szendrei K. J. Chem. Soc. Perkin Trans. I 1979c; 2982.
12. Crombie L, Crombie WML, Whiting DA, Szendrei K. J. Chem. Soc. Perkin Trans. I 1979; 2976.
13. Crombie L, Toplis D, Whiting DA, Rozsá Z, Hohmann J, Szendrei K. J. Chem. Soc. Perkin Trans. I 1986; 531.
14. Dictionary of Natural Products. Chapman & Hall/CRC Press. Available: www.chemnetbase.com (searched 1 Feb 2003).
15. Baxter RL, Crombie L, Simmonds DJ, Whiting DA. J. Chem. Soc. Perkin Trans. I 1979; 2972.
16. Cais M, Ginsburg D, Mandelbaum A, Smith RM. Tetrahedron 1975; 31: 2727.
17. Han BH, Park MK, Ryu JH, Park JH, Naoki H. Phytochemistry 1990; 29: 2303.
18. Duan HQ, Takaishi Y, Momota H, Ohmoto Y, Taki T, Jia YF, Li D. J. Nat. Prod. 2001; 64: 582.
19. Jikai L, Dagang W, Zhongjian J. Phytochemistry 1993; 32: 487.
20. Yamada K, Sugiura K, Shizuri Y, Wada H, Hirata Y. Tetrahedron 1977; 33: 1725.
21. Jikai L, Chunquan C, Dagang W. Phytochemistry 1993; 32: 379.