... Please enable JavaScript to use all the features on this page. Tetrahedron. Volume 46, Issue 6, 1990, Pages 2089-2096. Cover image. ... Download full text in PDF. Tetrahedron Vol. 46. No. 6, pp. ... 2. J. Rigaudy, C. Igier, J. Barcelo. Tetrahedron Lett., 44 (1975), p. 3845. 3. ...