... Tetrahedron Letters. Volume 34, Issue 10, 5 March 1993, Pages 1629–1630. The International Journal for the Rapid Publication of Preliminary. Cover image Cover image. ... 1991; 3; Rao A. Rama, DS Bose, MK Gurjar, T. Ravindranathan; Tetrahedron, 45 (1989), pp. 7031–7040. ...