Partialsynthese von 4′‐Demethylepipodophyllotoxin. 22. Mitteilung über mitosehemmende Naturstoffe [1]
- 1 January 1969
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 52 (4) , 944-947
- https://doi.org/10.1002/hlca.19690520410
Abstract
4′‐Demethylepipodophyllotoxin (III) has been synthesized by epimerisation of 4′‐demethylpodophyllotoxin (I) via the corresponding chloride II. An improved method for the preparation of III has been developed by selective ether cleavage of the easily available podophyllotoxin (V) using the bromoderivatives VI and VII as intermediates.Keywords
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