Process for introducing an oxygen-containing functional group in

Details Process for introducing an oxygen-containing functional group in Process for introducing an oxygen-containing functional group in

1981-09-22

1983-04-05

Bond, Robert T.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

2602393P, A61K 31395, C07D49108

Patent

active

043791492

ABSTRACT:
3-Hydroxyrifamycin S and its new analogues with an etherified or esterified 3-hydroxyl group of the formula ##STR1## in which each of R and R' represents a hydrogen atom, or R' represents acetyl and R represents hydrogen, an optionally substituted hydrocarbyl or the acyl radical of a carboxylic acid, and also the corresponding compounds of the SV series, are obtained by a novel process in which 3-bromorifamycin S is treated with a reagent ROH, in which R has the meanings mentioned above, or with a salt thereof, in a neutral to weakly basic medium. The final products are primarily suitable as antibiotics for combating microbial infections and/or as intermediates for the manufacture of the same.

REFERENCES:
patent: 3923791 (1975-12-01), Celmer
Morrison and Boyd, "Organic Chemistry", 3rd Ed., (Allyn and Bacon), (1973), pp. 456-458.

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