Synthesis of chiral 3-substituted .GAMMA.-lactones and 9-furanosyl-adenine from (R)-2-(2, 2-diethoxyethyl)-1, 3-propanediol monoacetate prepared by lipase-catalyzed reaction.

Abstract
A chiral building block, (R)-2-(2,2-diethoxyethyl)-1,3-propanediol monoacetate was synthesized in high optical and chemical yields by lipase-catalyzed transesterification. From this compound, we synthesized chiral 3-substituted gamma-lactones and a new nucleoside with antiviral activity.

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