Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1989-07-18
1990-05-22
Raymond, Richard L.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
514440, 549264, 549265, 549 60, A61K 31365, C07D31500
Patent
active
049278479
ABSTRACT:
Antiparasitic milbemycin derivatives having at the C.25 position a substituted 2-propenyl group --C(CH.sub.3).dbd.CH--R.sup.2 wherein R.sup.2 is a C.sub.3 -C.sub.8 alkyl, alkenyl or alkynyl group which may optionally contain an oxygen or sulphur atom as part of the chain, or a C.sub.3 -C.sub.8 cycloalkyl or cycloalkenyl group, or a 3 to 6 membered oxygen or sulphur containing heterocyclic ring which may optionally be substituted by one or more alkyl groups or halogen atoms; and process for their preparation.
REFERENCES:
patent: 4696922 (1987-09-01), Sturm et al.
Dutton Christopher J.
Perry David A.
Benson Gregg C.
Lumb J. Trevor
Owens Amelia A.
Pfizer Inc.
Raymond Richard L.
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