Further sesterterpenes from the spongeSpongia nitens: 12-epi-scalaradial and 12,18-diepi-scalaradial |
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Authors: | G Cimino S De Stefano A Di Luccia |
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Institution: | (1) Laboratorio per la Chimica di Molecole di Interesse biologico del C.N.R., via Toiano 2, Arco Felice, Naples, Italy |
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Abstract: | Summary 2 new tetracarbocyclic sesterterpenes, isomers of the previously2 described scalaradial (1), have been isolated from the marine spongeSpongia nitens and their structures have been established to be2 and3; during the structural work, evidence on the stereochemistry of1,2 and3 has been obtained.This work is part of the Progetto Finalizzato per l'Oceanografia e i Fondi Marini, C.N.R., Roma. We thank the Zoological Station (Naples) for the collection of the sponge, A. Crispino, C. Di Pinto and A. Milone for their technical assistance and Prof. C. Santacroce for generous gifts of scalaradial. |
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