Organo-boron compounds S 0040Synthesis and Molecular Structure of 2,4,8a-Triaryl-6-methylperhydro[1,3,2]dioxaborinino[5,4-c]pyridines. -Condensation of 1,3-diol (I) with arylboronic acids affords the title compounds (III), which are representatives of a new heterocyclic system. Their stereochemistry and molecular structures are established by single crystal X-ray diffraction analysis. -(LE TUAN ANH; POLYANSKII, K. B.; ANDRESYUK, A. N.; SOLDATENKOV*, A. T.; MAMYRBEKOVA, Z. A.; KULESHOVA, L. N.; KHRUSTALEV, V. N.; Russ. Chem. Bull. 53 (2004) 4, 842-845; Russ. Peoples' Friendship Univ., Moscow 117198, Russia; Eng.) -D. Singer 03-165