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Variabines A and B: new β-carboline alkaloids from the marine spongeLuffariella variabilis

✍ Scribed by Eriko Sakai, Hikaru Kato, Henki Rotinsulu, Fitje Losung…

Book ID: 120796262
Publisher: Springer Japan
Year: 2013
Tongue: Japanese
Weight: 246 KB
Volume: 68
Category: Article
ISSN: 1340-3443
DOI: 10.1007/s11418-013-0778-8

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## Abstract The first total synthesis of the β‐carboline alkaloids arenarine A **(1)** and arenarine B **(2)** is described. Methanolysis of the α‐bromoketone **9** gives **1** in good yield. Alternatively **1** can be obtained from the diazoketone **11** with boron trifluoride/methanol in poor yie