Intermediates and process for the preparation of an...

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C - Chemistry, Metallurgy

07

C

C07C 69/78 (2006.01) C07C 43/178 (2006.01) C07C 43/23 (2006.01) C07C 67/293 (2006.01) C07C 69/003 (2006.01) C07C 69/02 (2006.01) C07D 317/72 (2006.01) C07D 473/00 (2006.01) C07D 473/18 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2172660

(1R,trans) Diprotected 3-methylene-1,2-cyclo- propanedimethanol is oxidized to an optically active diol intermediate which is then cyclized to an orthoester intermediate, and then converted to the (2S-trans)diprotected 2,3-bis(hydroxymethyl)cyclo- butanone. This cyclobutanone is useful as an intermediate in the preparation of the antiviral agent [1R-(1.alpha.,2.beta.,3.alpha.)]-2-amino-9-[2,3-bis(hydroxy methyl)cyclobutyl]-1,9-dihydro-6H-purin-6-one.

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