... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 45, Issue 50, 6 December 2004, Pages 9197–9201. ... c Laboratoire d'Ingénierie Moléculaire, Université des Sciences et Technologies, 59655 Villeneuve d'Ascq, France. Received 6 October 2004, Revised 14 October 2004, Accepted 15 October 2004, Available online 2 November 2004. Abstract. ... 21–26. (b) A. Gorgues, A. Le Coq; Tetrahedron Lett., 20 (1979), pp. 4829–4832 ...