Taipei Medical University

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Lin PY, Shi SJ and Hsu FL
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------>journal_name=New Taipei Journal of Medicine
------>paper_name=Synthesis of catharidinimide derivatives via the mitsunobu reaction.
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------>fullAbstract=A four-step synthesis of (-)-lentiginosine and its epimers is described starting from 2-bromopyridine. The key step consisted of a quaternarization of a fully unprotected pyridinium-polyol unit using Mitsunobu methodology. Subsequent PtO(2)-catalyzed diastereoselective hydrogenation of the pyridinium ring proceeded smoothly and led to the expected dihydroxyindolizidines with excellent yields. This stereochemically flexible strategy has been illustrated by the concise total synthesis of non-natural products derivatives such as (-)-lentiginosine and its stereoisomers in high yields.
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------>authors=Lin PY, Shi SJ and Hsu FL
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------>updateTitle=A concise synthesis of lentiginosine derivatives using a pyridinium formation via the Mitsunobu reaction.
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------>publish_year=1999
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z