2-Desmethyl ansamycin compounds

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C514S235200, C540S461000

Reexamination Certificate

active

10868724

ABSTRACT:
2-Desmethyl ansamycins having a structure according to formula I, where R1, R2, R3, R4, R5and R6are as defined herein, and other 2-desmethyl ansamycins are useful as antiproliferative agents

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