00740naa#a2200193#i#450# EN\\bibl\119502 20260414175829.2 2782-1900 20260324b2026####ek#y0engy0150####ca ENG RU Synthesis of 2,4,7,9-tetraphenyl-4,4a,9,9a-tetrahydrothiopyrano[2,3-g]thiochromene-5,10(5aH,10aH)-dione and analysis of its biological activity Journal article Yaroslavl Yaroslavl State Technical University 2026 10 с. Journal article local Соединения с одним тиопирановым кольцом. 547.818.1 ENG Nemirov Daniil Mihaylovich Ovchinnikov Konstantin L'vovich chemintech.ru