Daphtenidines A–D, new Daphniphyllum alkaloids from Daphniphyllum teijsmannii

Daphtenidines A–D ( 1– 4 ), four new alkaloids were isolated from the leaves of Daphniphyllum teijsmannii, and the structures including relative stereochemistry were elucidated on the basis of spectroscopic data. Daphtenidines A ( 1 ) and B ( 2 ) were possessing daphnilactone A-type skeleton. This i...

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Published in:Tetrahedron 2006-05, Vol.62 (20), p.4743-4748
Main Authors: Kubota, Takaaki, Matsuno, Yosuke, Morita, Hiroshi, Shinzato, Takakazu, Sekiguchi, Mitsuhiro, Kobayashi, Jun'ichi
Format: Article
Language:English
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Summary:Daphtenidines A–D ( 1– 4 ), four new alkaloids were isolated from the leaves of Daphniphyllum teijsmannii, and the structures including relative stereochemistry were elucidated on the basis of spectroscopic data. Daphtenidines A ( 1 ) and B ( 2 ) were possessing daphnilactone A-type skeleton. This is the second isolation of daphnilactone A-type alkaloids from natural sources. Daphtenidine C ( 3 ) was 4-acetoxy form of daphmanidin A, while daphtenidine D ( 4 ) was 14-dehydro form of yuzurimine. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2006.03.040