Antiviral agents
US6576784B1 · kind B1 · utility
1Cited by
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29Claims
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Key dates
| Filing date | May 27, 1993 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | May 27, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel antiviral (including antiretroviral) compounds are mono- or dicarboxylic acid esters of hypericin in which one or both of the methyl groups of hypericin are substituted by carboxylic acid ester groups of the formula COOR3 in which R3 is alkyl, the chain of which is optionally interrupted by one or more oxygen or sulphur atoms. R3 is preferably methyl, ethyl, propyl, butyl, 2-methoxyethyl or 2-(2-methoxyethoxy)ethyl. The compounds may be formulated into pharmaceutical compositions and may be used in any manner which has previously been known for hypericin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.