| 摘要 |
The present invention relates to a novel, high-yield and low-cost method for preparing entecavir, [1-S-(1alpha,3alpha,4beta)]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one, an antiviral agent, and novel intermediates used therein.
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