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Intermediates in the preparation of the antiviral agent [1S-(1α, 3α, 4β)]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxmethyl)-2-methylenecyclopentyl]-6H-purin-6-one

US Patent 7550619 · Granted Jun 23, 2009

Estimated economic value: $58,347,000

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