... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 26, Issue 36, 1985, Pages 4351–4354. Cover image Cover image. ... 5; All figures show relative configurations. 6; NC Cohen, et al. We are indebted to Dr. H. Burghard, Farbwerke Hoechst AG, Frankfurt, for this calculation using the program SCRIPT; see Tetrahedron, 37 (1981), p. 1711. ... 9; F. Richter; Thesis, Freiburg (1985). 10; RE Christ, RC Fuson; J. Am. Chem. ...