Derivatives of 3-carboxyrifamycin S and SV and process for their

Details Derivatives of 3-carboxyrifamycin S and SV and process for their Derivatives of 3-carboxyrifamycin S and SV and process for their

1978-12-11

1980-04-29

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424244, 424249, 424267, 424250, 42424854, C07D49108, A61K 3133

Patent

active

042005736

ABSTRACT:
New compounds being derivatives of 3-carboxyrifamycin S and SV are prepared by oxidation of cyanohydrin of 3-formylrifamycin S to 3-(cyanocarbonyl)rifamycin S, condensation with a compound of formula HR (an alcohol, an amine or an substituted hydrazine) and, optionally, reduction of the derivative of 3-carboxyrifamycin S so obtained to the corresponding SV form. Alternatively 3-(cyanocarbonyl)rifamycin S may be converted to the SV form before condensing with the compound HR.

REFERENCES:
patent: 3342810 (1967-09-01), Maggi et al.
patent: 3349082 (1967-10-01), Maggi et al.

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