Mm. Vaghefi et Ka. Langley, STEREOCONTROLLED SYNTHESIS OF NUCLEOSIDE-MEAHYLPHOSPHONATE-METHYL ESTER DIASTEREOMERS FROM MIXED ANHYDRIDE, Tetrahedron letters, 37(28), 1996, pp. 4853-4856
Nucleoside-3'-methylphosphonate was converted to a diastereomeic mixtu
re of di-n-butylphosphiothioic anhydride and the stereoisomers were se
parated Activation of each isomer with silver nitrate and coupling wit
h methanol resulted in the formation of a methyl ester with inversion
of configuration. Copyright (C) 1996 Elsevier Science Ltd