Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1987-03-06
1989-12-12
Hollrah, Glennon H.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
549264, A61K 31335, C07D31196
Patent
active
048868302
ABSTRACT:
The present invention relates to novel derivatives of LL-F28249 compounds wherein the 23-hydroxyl group is replaced with hydrogen 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. The 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-O,O-bissilylated LL-F28249 compounds at low temperature, desilylation, re-silylation of the 5-hydroxyl group, thiocarbonylation of the 23-hydroxyl group, disilyation followed by tributyltin hydride reduction. The novel deoxy compounds of the present invention have anthelmintic, insecticidal, ectoparasiticidal, nematicidal and acaricidal activity. Compositions containing these described derivatives as active ingredients thereof are described herein.
REFERENCES:
patent: 4530921 (1985-07-01), Mrozik
patent: 4696922 (1987-09-01), Sturm et al.
Abstract of J.A. 84/036,681.
Asato Goro
Tamura Susan Y.
American Cyanamid Company
Hollrah Glennon H.
Trinh Ba
Tsevdos Estelle J.
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