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US6008382A Method for preparing 4'-Demethylepipodophyllotoxin from podophyllotoxin 失效
从鬼臼毒素制备4'-甲氧基鬼臼毒素的方法

Method for preparing 4'-Demethylepipodophyllotoxin from podophyllotoxin
摘要:
A method for synthesizing a 4'-demethylepipodophyllotoxin of formula (II) from a podophyllotoxin of formula (I) by treating it with a pair of reagents, i.e. a strong acid and an aliphatic, aromatic or functionalized sulphide, in the present of an organic or inorganic acid, or in the presence of water with or without a water-miscible organic solvent. ##STR1##
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