Processes for the interconversion of avermectin compounds
US4423209A · kind A · utility
50Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H19/01
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is disclosed a process for converting avermectin compounds (formerly identified as C-076 compounds) of the A-type, into avermectin compounds of the B-type. The process is carried out on the naturally occuring avermectin compounds as well as on derivatives thereof. The process involves selectively cleaving the 5-methoxy group, converting it into the hydroxy group, through the intermediate 5-keto group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.