... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 48, Issue 49, 3 December 2007, Pages 8709–8711. Cover image Cover image. ... Acknowledgements. We thank the management of Dr. Reddy's Laboratories Ltd. for extending support to the work. Co-operation from project colleagues and the analytical department is highly appreciated. References and notes. 1; (a) AA Elassar, AA El-Khai; Tetrahedron, 59 (2003), pp. ...