SYNTHESIS AND STRUCTURE OF NOVEL YLIDENE DERIVATIVES OF METHANOBENZO[<i>g</i>]THIAZOLO[2,3-<i>d</i>][1,3,5]OXADIAZOCINE

Abstract

Novel benzylidene and furylidene derivatives of tricyclic thiazolo[2,3-d][1,3,5]oxadiazocines were synthesized, and their structures were confirmed by ¹H and ¹³C NMR spectroscopy. It was shown that ylidene derivatives of 11H-5,11,5-pentane-[1,1,5]triyl[1,3]thiazolo[2,3-d][1,3,5]oxadiazocin-1-one are obtained as a mixture of Z- and E-isomers. Recrystallization of the isomer mixture affords the major Z-isomer, structure of which has been established by X-ray structural analysis.

Authors: Ivan V. Kulakov, Diana N. Ogurtsova, Zarina T. Shulgau,
Tulegen M. Seilkhanov, Yurii V. Gatilov