Process for the preparation of basic antibiotic-inorganic acid addition salts and intermediate oxalates
US6642377B1 · kind B1 · utility
1Cited by
2References
13Claims
0Family size
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Key dates
| Filing date | Jan 14, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 14, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A production process which comprises subjecting a basic antibiotic.oxalate (II) to salt-exchange with an alkali earth metal salt (III) of an inorganic acid: wherein the ring A means the basic antibiotic; R10 means a protected functional group used in organic synthesis; Ak—E means the alkali earth metal; and B means the inorganic acid, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.