4-substituted anthracyclinones and their preparation
US5218130A · kind A · utility
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6References
7Claims
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Key dates
| Filing date | Jan 25, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Jan 25, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
4-substituted anthracyclinones of formula (I) ##STR1## wherein R represents a hydrogen atom or a straight or branched alkyl, alkenyl or alkynyl group having from 1 to 10 carbon atoms, are intermediates in the preparation of antitumor anthracycline glycosides of formula (IX): ##STR2## wherein R is as defined above and R.sub.1 is a hydrogen atom or a hydroxy group, and pharmaceutically acceptable salts thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.