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US 7,022,873 B2Granted
Antibiotics Cyan-416 A, Cyan-416 B, Cyan-416 C, Cyan-416 D and Cyan-416 E, and ester derivatives of Cyan-416 B
AssigneeWyeth Holdings Corporation
InventorsHaiyin He, Ramunas Bigelis
Life of this patent
Estimating the term…
Abstract
The invention relates to new antibiotics designated Cyan-416A, Cyan 416B, Cyan-416C, Cyan-416D and Cyan-416E to their production by fermentation of Acremonium sp. NRRL 30631 to methods for recovery and concentration from the crude solutions, and to a process for purification and to semisynthetic ethers of Cyan-416B.
Claims13
The compound which has the structure
The compound which has the structure
The compound which has the structure
The compound which has the structure:
- wherein R is straight or branched alkyl of 1 to 10 carbon atoms, alkenyl of 2 to 10 carbon atoms, cycloalkyl of 3 to 10 carbon atoms and cycloalkenyl of 3 to 10 carbon atoms.
Dependencies are inferred from the claim text.