... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 40, Issue 23, 4 June 1999, Pages 4339–4342. Cover image Cover image. ... 1. (b); A. Godard, F. Marsais, N. Plé, F. Trécourt, A. Turck, G. Quéguiner; Heterocycles, 40 (1995), pp. 1055–1091. ...