Stereocontrol by Lewis Acids in the Hetero-Diels-Alder Reaction Leading to a Key 1.BETA.-Methylcarbapenem Intermediate.

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• The Lewis acid-promoted versions of the cycloaddition reaction between methyl 2-(benzoylamino)methylene-3-oxobutanoate and methylketene diethyl acetal are shown to provide a 1β-methylcarbapenem intermediate with high diastereoselectivity and moderate enantioselectivity.

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公益社団法人 日本化学会 | 論文

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