Free radical reactions of carbohydrate derivatives in the synthesis of carbocyclic compounds

The benzyloxy group at C(4) of the pyranose ring in 3,4-disubstituted and 3-deoxy carbohydrate derivatives affects the direction of intramolecular free-radical C(2)-C(6) cyclization. A possible mechanism of the formation of the tetrahydrofuran ring was proposed.For Part 3, see Ref. 1.Deceased.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 767–773, April, 1995.The present work was partially supported by the Russian Foundation for Basic Research (project No. 93-03-5834) and the International Science Foundation (Project No. MOM 000).