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ChemInform Abstract: Stereocontrolled Synthesis of the Tetracyclic Core of the Bisguanidine Alkaloids Palau′amine and Styloguanidine.

✍ Scribed by L. E. OVERMAN; B. N. ROGERS; J. E. TELLEW; W. C. TRENKLE

Publisher: John Wiley and Sons
Year: 2010
Weight: 31 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199748259

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## Abstract **Catalytic cyclization**: The Hg(OTf)~2~‐catalyzed __N__‐selective cyclization of amide carbonyl moieties for the construction of a quaternary carbon center was developed. The Hg(OTf)~2~‐catalyzed cyclization of cyclopentylidene alcohol with acylhydrazide afforded the desired cyclopent