Péter Tétényi obtained his PhD in chemistry/polymer science from Semmelweis University, Hungary, in 1993. From 1984 to 1985, he worked with the research group of Assoc. Prof. Steven L. Regen at the Department of Chemistry, Marquette University, USA, as a postdoctoral fellow. From 1979 to 1990, he was also a research pharmacist at Pharmaceutical Works G. Richter, Hungary, where he designed and synthesized more than 60 new, efficient thiazoles and benzimidazoles as antiulcer and antihistaminic agents. In 1990, he joined the Department of Organic Chemistry, Semmelweis University, as assistant lecturer, and since 1998, he is assistant professor there. Dr. Tétényi is a member of the American Chemical Society and the Society of the Hungarian Chemists. He has written numerous articles published in international journals and has many patents to his name. His current research interests include solid-phase synthesis, synthetic transformation of secologanin derivatives, and pyridazinone derivatives.