Mass spectrometry studies of iridoid aglycone derivatives

Mass spectrometry studies of lycodine‐type Lycopodium alkaloids: sauroxine and N‐demethylsauroxine

“…For the analysis of (CID) product ions, the precursor was selected using a MS/MS standard function, with 0.5–1.0 Da peak width for the precursor ion, and dynamically programmed scans. The supplementary voltage was in the range 0.5–1.0 V, as described previously …”

Mass spectral studies of diamide compounds obtained by the Ugi reaction

“…The characterization of certain fragment ions could be a tool for the detection of these compounds and their derived metabolites in complex biological matrices. [4][5][6] 2-Phenylethanamine (2.02 mmol) or aniline and acetone (2.43 mmol) were dissolved in methanol and stirred at roomtemperature. After 3 h, cinnamic acid (1.35 mmol) and tert-butyl isocyanide (1.48 mmol) were added and stirred for 24 h. Reaction progress was checked by thin-layer chromatography (TLC) and purification was carried out by flash chromatography using mixtures of n-hexane/ethyl acetate as eluent to afford 306.23 mg and 282.94 mg of compounds 1 and 2, respectively.…”

Mass spectrometry studies of Lycopodium alkaloid sauroine

“…The supplementary voltage was in the range 0.5-1.0V, as described previously. [9][10][11][12] Table 2.…”