Solid and solution phase synthesis of α-keto amides via azetidinone ring-opening: Application to the synthesis of poststatin (cas 135219-43-1)
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Add time:08/12/2019 Source:sciencedirect.com
3,3-Diethoxy-N-sulfonyl and carbamoyl azetidin-2-ones undergo efficient ring-opening reaction with various amine nucleophiles. Subsequent acid hydrolysis of the ketal moiety generated α-keto amides in excellent overall yields. The naturally occurring serine protease inhibitor poststatin was synthesized using this ring-opening reaction as the key step.
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