Spiramycin esters
US4174391A · kind A · utility
1Cited by
2References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1977 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Dec 6, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The spiramycin derivatives of the formula: ##STR1## wherein R.sup.1 represents acetyl, propionyl or hydrogen, A represents butenylene or butadienylene (wherein any double bonds present in A are trans), and R.sup.2 represents a group of the formula: ##STR2## wherein Z represents bivalent saturated or unsaturated alkylene of 1 to 6 carbon atoms, Y represents sulphur or oxygen, and R.sup.3 represents alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, aryl or aralkyl in which the alkylene moiety is of 1 to 6 carbon atoms and their non-toxic salts possess therapeutic and growth-promoting activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.