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Biomimetic Synthesis of the Tetracyclic Core of Berkelic Acid
[Image: see text] Acid catalyzed condensation of 2,6-dihydroxybenzoic acid 3 with ketal aldehyde 14 in methanol at 25 °C, followed by CH(2)N(2) esterification gave a 4:1:4:1 mixture of diastereomers 15b-18b in 60% yield. Equilibration of this mixture with TFA in CDCl(3) provided tetracycle 15b (83%...
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| Main Authors: | , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
2007
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2527759/ https://ncbi.nlm.nih.gov/pubmed/17465557 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1021/ol0704338 |
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