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Merck

Expedient synthesis of pyrrolo[1,2-a]indoles: preparation of the core of yuremamine.

Organic letters (2008-07-12)
Michael B Johansen, Michael A Kerr
RESUMEN

Pyrrolo[1,2- a]indoles are conveniently prepared from tetrahydro-1,2-oxazines, which in turn are generated through the reaction of nitrones with 1,1-cyclopropanediesters. The synthetic route proves to be highly diastereoselective and provides access to the core of the recently discovered pyrrolo[1,2- a]indole natural product yuremamine.

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Sigma-Aldrich
Cyclopropane-1,1-dicarboxylic acid, 97%