Process for the conversion of niddamycin to leucomycin a1,...

Details Process for the conversion of niddamycin to leucomycin a1,... Process for the conversion of niddamycin to leucomycin a1,...

C - Chemistry, Metallurgy

07

H

260/230

C07H 17/08 (2006.01)

Patent

CA 1048019

PROCESS FOR THE CONVERSION OF NIDDEAMYCIN TO LEUCOMYCIN A1, LEUCOMYCIN A3, CARBOMYCIN B AND OTHER ANTIBIOTICS AND RELATED 3-(O)-ESTERS Abstract of the Disclosure Covers the process for the conversion of niddamy- cin to known compounds such as carbomycin B, leucomycin A1 and A3, and other antibiotic compounds as well as novel re- lated 3-(O)-esters and dimethyl acetal derivatives not ob- tained from natural sources. These compounds are represented by the general formula: Image wherein R is hydroxy or oxygen, R1 is hydrogen, HCO (formyl), CH3CO (acetyl), CH3CH2CO (propionyl) or CH3CH2CH2CO (butyryl); wherein R2 is hydrogen or equivalent to R1 and R3 is CHO or CH(OCH3)2. These compounds are useful antimicrobial agents. -1-

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