1. Department of Food Quality and Chemistry of Natural Products, Mediterranean Agronomic Institute of Chania/ Centre International de Hautes Etudes Agronomiques Méditerranéennes; 73100 Chania Crete Greece
2. Laboratory of Organic Chemistry, Department of Chemical Sciences, School of Chemical Engineering; National Technical University of Athens; Heroon Polytechniou 9, Zografou Campus 15780 Athens Greece
3. Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy; University of Athens; Panepistimiopolis Zografou Athens 15771 Greece