Podophyllotoxin derivatives

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C549S299000

Reexamination Certificate

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07605262

ABSTRACT:
4-O esters of podophyllotoxin and 4′-demethylepipodophyllotoxin are provided. The compounds are 4-O esters of an alkanoic acid or substituted alkanoic acid and podophyllotoxin and 4′-demethylepipodophyllotoxin. The compounds are useful for treating cancer.

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