Claims
- 1. The hydrazons of 3-foreylrifamycin SV with 3-amino-7-ethylperhydro-1H-pyrido-[1,2-a]pyrazine and a pharmaceutically acceptable alkali metal salt thereof in the form of an individual isomer or a mixture comprising more than one such isomer.
- 2. A sodium salt of the hydrazone according to claim 1.
- 3. A potassium salt of the hydrazone according to claim 1.
- 4. A compound according to claim 1 in the form of an individual pair of diasteresomers designated as Isomer A and identified by a lower mobility than the other isomeric pair of diasteresomers in thin-layer chromotography over silicagel with ethyl acetate-cyclohexane solvent system.
- 5. A compound according to claim 4 as a sodium salt.
- 6. A compound according to claim 4 as a potassium salt.
- 7. A compound according to claim 1 in this form of an individual pair of diastereomers designated as Isomer B and identified by a higher mobility than the other isomeric pair of diastereomers in thin-layer chromatography over silicagel with ethyl acetate-cyclohexane solvent system.
- 8. A compound according to claim 7 as a sodium salt.
- 9. A compound according to claim 7 as a potassium salt.
Parent Case Info
This application is a continuation-in-part of Ser. No. 644,886, filed Aug. 27, 1984, now U.S. Pat. No. 4,551,450 which claims priority of Swiss application No. 4802/83-5, filed Sept. 1, 1983.
US Referenced Citations (4)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
644886 |
Aug 1984 |
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