This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The objective of this study was to investigate the MS behaviour of lanostane acids for the first time using ESI. Since sometimes different fragmentation pathways could be seeing employing in time or in space tandem mass analysis, ESI-TOF and ESI-IT mass spectra were compared. The idea was to develop a robust method to identify the compounds in a crude extract that can be applied to any instrument. Lanostane-triterpene acids were obtained from the culture of the fungus Coriolellus malicola and were present as complex mixtures of different compounds. Individual components were isolated and identify by NMR, and used as models for the analysis. The above compounds were sent to the Center for Biomedical and Bioorganic Mass Spectrometry to run the spectra in the LCQ.
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