SYNTHESIS OF INTERMEDIATES FOR STEREOSPECIFIC SYNTHESIS OF ALPHA-C-NUCLEOSIDES AND BETA-C-NUCLEOSIDES - RING CONTRACTION OF PROTECTED 2-O-TRIFLUOROMETHANESULFONATES OF GALACTO-PYRANOSIDES AND ALTRO-PYRANOSIDES
The reactions of sodium azide with methyl 6-0-(tert-butyldiphenyl)silyl-3,4-0-isopropylidene-2-0-trifluoromethanesulphonyl-D-galactopyranosides and with methyl 6-0-(tert-butyldiphenyl)silyl-3,4-0-isopropylidene-2-0-trifluoromethane-sulphonyl-α-D-altropyranoside give, respectively, intermediates suit...
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Format: | Journal article |
Language: | English |
Published: |
1987
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