Carbonate intermediates for the synthesis of purine substituted cyclopentene derivatives
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Aug 31, 1993
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Nov 6, 1991
filing date -
Apr 6, 1990
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Abstract
This invention relates to the new process for preparing the 1R-cis isomer of carbovir, (1R-cis)-amino-1,9-dihydro-9-[4-(hydroxymethyl)-2-cyclopenten-1-yl]-6H-purin-6-one, an antiviral agent and intermediates of the formula (Vlb) use in that process ##STR1## wherein X is chloro, bromo or iodo and R is (C.sub.1-6) alkyl.
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