R.  Bhattacharya, Kesharwani, M. K., Manna, C., Ganguly, B., Suresh, C. G., and Pathak, T., ?Experimental and theoretical study on the remarkable influence of protecting groups on the selectivity of addition of amines to vinyl sulfone-modified hex-2-enopyranosides?, Journal of Organic Chemistry, vol. 75, no. 2, pp. 303-314, 2010.