Olive drupe tissues have been selected as a possible source of information about the secondary metabolism of oleaceae secoiridoids. The structures of a number of new microcomponents, detected and isolated by a combined high-performance liquid chromatography (HPLC)-fraction collector/ ultraviolet electrospray ionization mass spectrometry (UV/ESI-MS) apparatus, can be inferred from the data obtained by high-resolution tandem mass spectrometry in a QqTOF instrument. Some of them (1, 2, 3 and 4) are closely correlated to oleuropein. Others, such as neo-nuzhenide (5) and 2"-hydroxyoleuropein (6), typical of other oleaceae families, have never been found in olive tissues. Copyright (c) 2007 John Wiley & Sons, Ltd. RI NAPOLI, ANNA/B-5250-2011; Di Donna, Leonardo/D-5707-2011
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