Mono- and diepoxide derivatives of delta__-ll-f28249 compounds
CA 1291129 C · Owner: Wyeth Holdings Corporation · Inventors: Asato, Goro; Tamura, Susan Yoshiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
MONO- AND DIEPOXIDE DERIVATIVES OF, .DELTA.22-LL-F28249 COMPOUNDS ABSTRACT, The present invention relates to novel derivatives of LL-F28249 compounds wherein the 23-hydroxyl group is eliminated to form a double bond at the C(22,23)-position (.DELTA.22), and the double bond at the C(26,27)-position is epoxidized concomitant with or without epoxidation of the double bond at the C(14,15)position. These LL-F28249 compounds (collectively) are isolates from the fermentation broth of Streptomyces cyaneogriseus subspecies noncyanogenus having deposit accession number NRRL 15773. The compounds of the present invention are derived by regioselective epoxidation of 5,23-Q,O-bissilylated LL-F28249 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.