RT - Article SR - Electronic T1 - SP - 2018-01-11 A1 - Дьяконов, В.А., A1 - Джемилева, Л.У., A1 - Туктарова, Р.А., A1 - Макаров, А.А., A1 - Исламов, И.И., A1 - Мулюкова, А.Р., A1 - Джемилев, У.М., A1 - , A1 - , A1 - , A1 - , A1 - , A1 - , YR - 2015 UL - https://repo.bashgmu.ru/publication/609 AB - Two approaches to stereoselective synthesis of steroid 5Z,9Z-dienoic acids were developed, the first one being based on the cross-cyclomagnesiation of 2-(hepta-5,6-dien-1-yloxy)tetrahydro-2H-pyran and 1,2-diene cholesterol derivatives on treatment with EtMgBr catalyzed by Cp2TiCl2, while the other involving the synthesis of esters of hydroxy steroids with (5Z,9Z)-tetradeca-5,9-dienedioic acid, prepared in two steps using homo-cyclomagnesiation of 2-(hepta-5,6-dien-1-yloxy)tetrahydro-2H-pyran as the key step. High inhibitory activity of the synthesized acids against human topoisomerase I (hTop1) was found.