Reaction of Unsymmetrical α,β-Unsaturated Ketones with Thiobarbituric Acid. -The title reaction affords previously unknown spiro-compounds (III) with high regio-and stereoselectivity. -(KLOCHKOVA, I. N.; ANIS'KOV*, A. A.; SHCHEKINA, M. P.; CHUVAIKINA, S. V.; ANDREEV, K. A.; Russ. J. Org. Chem. 49 (2013) 9, 1344-1347, http://dx.