The gracilines: A novel subgroup of the amaryllidaceae alkaloids

A new subgroup of the Amaryllidaceae alkaloids having a 10b,4a-ethanoiminodibenzo[b, d] pyrane (2-benzopyrano[3,4-d]indole) nucleus is isolated from two different Galanthus species as three novel monomeric alkaloids, (+)-graciline (1), (+)-11-acetoxygraciline (2) and (+)-3,4-dihydro-3-hydroxygracili...

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Bibliographic Details
Published inHeterocycles Vol. 48; no. 9; pp. 1777 - 1791
Main Authors Noyan, S, Rentsch, GH, Onur, MA, Gozler, T
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier 1998
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
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Summary:A new subgroup of the Amaryllidaceae alkaloids having a 10b,4a-ethanoiminodibenzo[b, d] pyrane (2-benzopyrano[3,4-d]indole) nucleus is isolated from two different Galanthus species as three novel monomeric alkaloids, (+)-graciline (1), (+)-11-acetoxygraciline (2) and (+)-3,4-dihydro-3-hydroxygraciline (3). The fourth new compound, (-)-digracine (4) is a dimer of two such moieties.
ISSN:0385-5414
DOI:10.3987/com-98-8201