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ChemInform Abstract: Azepines by Photochemical Ring Enlargement of 9- Azidopodophyllotoxinand 9-Azido-9′-demethylepipodophyllotoxin Derivatives.

✍ Scribed by H. LAATSCH; B. P. ERNST; D. HOFFMANN


Book ID
112025416
Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
27
Category
Article
ISSN
0931-7597

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Azepines by photochemical ring enlargeme
✍ Laatsch, Hartmut ;Erns, Bernd Peter ;Hoffmann, Dieter 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 558 KB

## Abstract The azepines 5a‐5c were obtained by photochemical nitrene rearrangement of the azides 1e/1f and 4b/4c in cyclohexene, but not in other solvents. They are ring expansion products of podophyllotoxin (1a) and resemble steganacin (9), but show only low biological activity. The triazenes 7a/