Assembly of the gephyrotoxin ring system
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William H. Pearson; Yam-Foo Poon
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Article
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1989
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Elsevier Science
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French
β 331 KB
Heating azidcdienes 19 at 70Β°C produced the tricyclic 3-pyrrolines 20 and 21 in one operation. The diastereoselectivity of this process was examined, and found to be controlled by the conformation of the cyclization precursor. Compound 20d incorporates the basic features of gephyrotoxin 3. Fused bi