1. Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
2. NEUROFARBA Department, Sezione di Scienze Farmaceutiche, University of Florence, Via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy
3. Biomedical Research and Study Center, Ratsupites 1, LV-1067 Riga, Latvia
4. Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena iela 3, LV-1048 Riga, Latvia