... Tetrahedron Letters. Volume 34, Issue 47, 19 November 1993, Pages 7619–7622. The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry. ... 3); a) S. Torii, H. Tanaka, T. Katoh, K. Morisaki; Tetrahedron Lett., 25 (1984), pp. 3207– ...