Zobrazeno 1 - 10
of 54
pro vyhledávání: '"V.N. Ramachandran"'
Publikováno v:
TrAC Trends in Analytical Chemistry. 33:46-54
This review discusses how crude extracts of selected plants are subjected to column chromatography and the resulting fractions tested for their antibacterial activity towards organisms (e.g., methicillin-resistant-Staphylococcus aureus). We discuss t
Publikováno v:
Rapid Communications in Mass Spectrometry. 25:1308-1314
Electrospray ionisation quadrupole time-of-flight tandem mass spectrometry (ESI-QTOF-MS/MS) has been used for characterisation of a selection of naturally occurring and synthetic coumarins from different structural classes. The product ions, suggeste
Publikováno v:
Analytica Chimica Acta. 572:63-76
Mass spectral fragmentation of quinoline alkaloids of significance in plants has been investigated using electrospray ionisation ion trap mass spectrometry (ESI–MSn) with a view to characterisation of molecules of unknown structure isolated from th
Autor:
Clare Joyce, Peter Brooks, W.F. Smyth, Stephen McClean, Edmund O’Kane, F. O’Donnell, Catherine J. Hack, Thomas J. Smyth, V.N. Ramachandran, Bernadette Doherty
Publikováno v:
TrAC Trends in Analytical Chemistry. 25:572-582
This article considers the application of topical analytical techniques – electrospray ionisation-mass spectrometry (ESI-MS) and liquid chromatography (LC)-ESI-MS – to the characterisation of selected small molecular-mass synthetic and natural-pr
Publikováno v:
Analytica Chimica Acta. 564:201-210
The aim of this paper is to provide analytical chemical information on a range of naturally occurring and synthetic coumarins. This analytical chemical information on liquid chromatography-electrospray ionisation-mass spectrometry (HPLC-ESI-MS), ion
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 36:465-476
The electrospray ionisation-ion-trap mass spectrometry (ESI-MSn) of selected drug compounds with amine-containing side chains has been investigated. Certain characteristic in-source fragmentations have been observed for these molecules. Sequential pr
Publikováno v:
Analytica Chimica Acta. 506:203-214
The electrospray ionisation–ion trap mass spectrometry (ESI–MSn) of selected hypnotic drugs, i.e. zopiclone, zolpidem, flunitrazepam and their metabolites have been investigated. Sequential product ion fragmentation experiments (MSn) have been pe
Publikováno v:
Rapid Communications in Mass Spectrometry. 14:2061-2069
The electrospray ionisation (ESI) of sixteen pharmacologically significant 1,4-benzodiazepines and their subsequent fragmentation using an ion-trap mass spectrometer have been investigated. Sequential product ion fragmentation experiments (MSn) were
Publikováno v:
Rapid Communications in Mass Spectrometry. 14:1157-1166
The electrospray ionisation (ESI) of selected coumarin derivatives and their subsequent fragmentation using an ion trap mass spectrometer have been investigated. Sequential product ion fragmentation experiments (MS(n)) were performed in order to eluc
Publikováno v:
Electrophoresis. 33(4)
The ethyl acetate extracts of the bark and leaves of Ficus coronata were separated by column chromatography and the resulting fractions tested for their bioactivity toward methicillin-resistant-Staphylococcus aureus (MRSA) and M. luteus. The bioactiv