(untitled) - Soloshonok,V.A.; Fokina,N.A.; Rybakova,A.V.; Shishkina,I.P.; Galushko,S.V.; Sorochinsky,A.E.; Kukhar,V.P.; Savchenko,M.V.; Svedas,V.A. (Tetrahedron: Asymmetry, 1995)