机译：In memory of our colleagues At the end of 2021, outstanding scientists in the field of synthesis and research of macroheterocyclic compounds passed away: Professor Geliy Vasilyevich Ponomarev (1940-2021), Professor Andrey Fedorovich Mironov (1935-2021) and Professor Tigran Stepanovich Kurtikyan (1946-2021).
