Spiro|benzo|e|pyrano|3,2-c||1,2|oxathiin-4,3'-indolil|-3-carbonitrile 5,5-dioxides: synthesis and the biological activity study - G. V. Grygoriv; D. A. Lega; I. A. Zupanets; S. K. Shebeko; S. M. Zimin; I. L. Starchikova; L. A. Shemchuk (Journal of organic and pharmaceutical chemistry, 2019)