^Synthesis of methyl 6-deoxy-4-O-(sodium sulfonato)-α-Ltalopyranoside, its C-4 epimer and both isosteric [4-C-(potassium sulfonatomethyl)] derivativesLászló Lázár, Magdolna Csávás, Anikó Borbás, Gyöngyi Gyémánt, and András Lipták ARKIVOC2004 (vii) 196-207 Link