C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/235.82
C07D 498/02 (2006.01) C07D 498/08 (2006.01)
Patent
CA 1057749
ABSTRACT OF THE DISCLOSURE: Rifamycin compounds having high antibiotic activity, comprising rose-coloured powders, water insoluble, but soluble in most of the organic solvents. Such compounds are obtained by reacting 3-amino-rifamycin S with gaseous ammonia in ethers and/or aromatic hydrocarbons at a temperature between 0°C and +30°C, stirring the mixture for at least 3 hours, and then isolating the compound thus obtained.
251689
Marsili Leonardo
Pasqualucci Carmine
Rossetti Vittorio
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