Bicyclic nucleosides, oligonucleotides, process for their preparation and intermediates
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Oct 13, 1992
filing date -
Oct 17, 1991
priority date (Note) -
Expired
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Abstract
Compounds of the formula I in the form of the racemates or enantiomers thereof, ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or a protective group, and B is a purine or pyrimidine radical or an analogue thereof, can be used as antiviral active ingredients or for the preparation of biologically active oligonucleotides.
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