Dimeric Erythrina Alkaloids from the Flower of Erythrina variegata

Unprecedented dimeric Erythrina alkaloids, spirocyclic (6/5/6/6) erythrivarine A (1) and spiro-fused (6/5/7/6) rings erythrivarine B (2), were isolated from the cultivated plant, E. variegata. The structures were determined on the basis of 1D and 2D NMR, FTIR, UV, and mass spectroscopic data and X-r...

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Veröffentlicht in:	Organic letters 2014-12, Vol.16 (24), p.6400-6403
Hauptverfasser:	Zhang, Bing-Jie, Bao, Mei-Fen, Zeng, Chun-Xia, Zhong, Xiu-Hong, Ni, Ling, Zeng, Ying, Cai, Xiang-Hai
Format:	Artikel
Sprache:	eng
Schlagworte:	Alkaloids - chemistry Alkaloids - isolation & purification Erythrina - chemistry Flowers Indole Alkaloids - chemical synthesis Indole Alkaloids - chemistry Indole Alkaloids - isolation & purification Indolizines - chemistry Indolizines - isolation & purification Magnetic Resonance Spectroscopy Molecular Structure Spiro Compounds - chemical synthesis Spiro Compounds - chemistry Spiro Compounds - isolation & purification X-Ray Diffraction
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Beschreibung
Zusammenfassung:	Unprecedented dimeric Erythrina alkaloids, spirocyclic (6/5/6/6) erythrivarine A (1) and spiro-fused (6/5/7/6) rings erythrivarine B (2), were isolated from the cultivated plant, E. variegata. The structures were determined on the basis of 1D and 2D NMR, FTIR, UV, and mass spectroscopic data and X-ray crystal diffraction. The biogenetic relationship of 1 and 2 is proposed.
ISSN:	1523-7060 1523-7052
DOI:	10.1021/ol503190z