... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 26, Issue 9, 1985, Pages 1237-1240. Cover image. ... (1974), p. 2643 Tetrahedron Lett. (1974), p. 2645 Tetrahedron Lett., 25 (1984), p. 3599. 16. 16. ...