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Iminophosphorane-mediated synthesis of 1-acyl-β-carbolines: A new access to the alkaloids eudistomin T, S and xestomanzamine A of marine origin

✍ Scribed by Pedro Molina; Pilar M Fresneda; Sagrario García-Zafra

Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
250 KB
Volume
37
Category
Article
ISSN
0040-4039

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✦ Synopsis

New syntheses of the alkaloids eudistomin T and S are described. The key step,formation of the 1-phenylacetyl fl-carboline, involves a tandem aza Wittig / electrocyclic ring closure process. The first synthesis of the alkaloid xestomanzamine A is achieved by coupling of a N-protected harmane, now available via aza Wittig / electrocyclic ring closure process, with a 5-1ithioimidazole derivative.

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