FOERFARANDE FOER ISOLERING AV FOER DIAGNOSTISKA AENDAMAOL LAEMPLIGT A-RISTOMYCIN OCH DESS DERIVAT MED HOEG RENHETSGRAD FRAON ORENT RISTOMYCIN ELLER RAO-RISTOMYCIN

• Main Authors: BODA, ZOLTAN, ZAJKA, GABRIELLA, RAK, KALMAN, SZTARICSKAI, FERENC, BOGNAR, REZSO
• Format: Patent
• Language: Finnish
• Published: 31.05.1988
• Edition: 4
• Subjects: CHEMISTRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; ORGANIC CHEMISTRY; PEPTIDES; PHYSICS; TESTING

The invention relates to a process for the preparation of A-ristomycin salts and/or A-ristomycin and/or derivatives thereof of high purity of the general formula I of Patent Claim 1, in which R1, R2, R3, R4, X and Y are defined as in Claim 1, in which I) the pH of an aqueous solution of the crude ri...