Process and intermediates for the preparation of an...

Details Process and intermediates for the preparation of an... Process and intermediates for the preparation of an...

C - Chemistry, Metallurgy

07

C

C07C 211/27 (2006.01) C07B 57/00 (2006.01) C07C 45/58 (2006.01) C07C 49/753 (2006.01) C07C 51/487 (2006.01) C07C 61/35 (2006.01) C07C 69/743 (2006.01) C07C 309/73 (2006.01) C07D 473/00 (2006.01) C07D 473/18 (2006.01)

Patent

CA 2079496

GY22 ABSTRACT Process And Intermediates For The Preparation Of An Antiviral Agent Racemic Feist's acid is treated with (R)-(+)-a- methylbenzylamine to yield (lR-trans)-3-methylene- cyclopropane-1,2-dicarboxylic acid, (R)-.alpha.-methylbenzyl- amine (1:1) salt. This salt can then be converted to (lR-trans)-3-methylene-1,2-cyclopropanedicarboxylic acid, dimethyl ester which is an intermediate in the preparation of the antiviral agent [1R-(1.alpha.,2.beta.,3.alpha.)]- 2-amino-9-[2,3-bis(hydroxymethyl)cyclobutyl]-1,9- dihydro-6H-purin-6-one. The improved process also enables the recovery of racemic Feist's acid from the resolution.

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