... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 33, Issue 18, 28 April 1992, Pages 2461–2464. ... Tetrahedron Lett., 31 (1990), p. 5749. j) C. Fugier, M. Leroux, JF Normant, A. Alexakis; (ORIL SA) Eur. Pat. ... Coll. vol. IV, Rabjohn, p. 612. 14; ...