Azepines by photochemical ring enlargeme
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Laatsch, Hartmut ;Erns, Bernd Peter ;Hoffmann, Dieter
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Article
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1995
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John Wiley and Sons
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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/