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2,2 -Cyclonucleoside ring opening

Thietane ring from 3-(acylthio)alcohols with 2,2 -cyclonucleoside ring opening ... [Pg.113]

Cyclonucleoside ring opening with and without epimerization... [Pg.50]

The 3,3 -cycloadenosine derivative (605) and 5 -chloro-5 -deoxyadenosine 2, 3 -sulphate (606) were formed when adenosine reacted with sulphuryl chloride in acetonitrile. Solvolysis of (606) in aqueous ethanol resulted in opening of the pyrimidine ring and formation of the cyclonucleoside (607). 3,5 -Cycloadenosine was synthesized from 5 -chloro-5 -deoxyadenosine, which was prepared by treating adenosine with thionyl chloride in HMPT. [Pg.186]

C 3 cannot be ruled out since treatment of 2 -deoj - 5 -0-monomethojQrtrityl-adenosine with DAST afforded N, 3 -cyclonucleoside in good yield. 3 -Fluoro-xylosyladenine 4a, however, should be prepared readily by opening the epoxide ring of 2, 3 -anhydroadenosine with fluoride. ... [Pg.66]

See other pages where 2,2 -Cyclonucleoside ring opening is mentioned: [Pg.353]    [Pg.311]    [Pg.390]    [Pg.443]    [Pg.273]    [Pg.302]    [Pg.132]    [Pg.228]    [Pg.269]    [Pg.165]    [Pg.151]    [Pg.61]    [Pg.173]    [Pg.300]    [Pg.235]   


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Cyclonucleosides

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