Process for preparing 2'-(diethylamino)rifamycin p (p/dea)

Details Process for preparing 2'-(diethylamino)rifamycin p (p/dea) Process for preparing 2'-(diethylamino)rifamycin p (p/dea)

C - Chemistry, Metallurgy

07

D

C07D 513/18 (2006.01)

Patent

CA 2059999

The present invention relates to a new one-pot process for preparing 2'-(diethylamino)rifamycin P and its 25-desacetyl derivative which consists in cyclizing 3-bromorifamycin S or its 25-desacetyl derivative, dissolved in dimethylformamide, with 1,1-diethylthiourea and reducing, without isolation, the obtained 1,2-quinonimine intermediate with a mild reducing agent.

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