Affiliation: | (1) L. N. Gumilev Eurasian National University, 010008 Astana, Munaitpasova, 5, Republic of Kazakhstan;(2) N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division, Russian Academy of Sciences, 630090 Novosibirsk, prosp. Akad. Lavrenteva, 9, Russia;(3) AO NPTs Fitokhimiya, 100009 Karaganda, Gazalieva, 4, Republic of Kazakhstan |