Venturi, "Detection of quorum-sensing Nacyl homoserine
lactone signal molecules by bacterial biosensors," FEMS Microbiology Letters, vol.
The IR spectrum of the compound 4-(3-hydroxybenzofuran-2-yl)-6-methylcoumarin (3a) (R = 6-C[H.sub.3]) displayed a
lactone carbonyl stretching frequency at 1729 cm-, whereas the-OH stretching frequency appeared at 3450 [cm.sup.-1].
Free,
lactone and total acidity of honey (Electrophoretic Method), 12 ed.
Efficacy of macrocyclic
lactone endectocides against Boophilus microplus (Acari: Ixodiae) infested cattle using different pour on application treatment regimes.
Lactone contents in all honey samples except linden honey (29.7 mEq/kg) showed an average
lactone content of >30 mEq/kg.
The standard extract is isolated from the dried leaves of the dioecious Ginkgo biloba tree and contains a wide variety of phytochemicals, amongst which flavonoids and terpene
lactones are considered to be bioactive constituents.
Functionalization of the double bond of
lactone 1 could be realized at two positions, either at C6 leading to compound 2 or at C7 leading to regioisomeric compound 3 (Fig.
The a-ring
lactone of brevetoxin PbTx-3 is required for sodium channel orphan receptor binding and activity.
Patch testing with a 6% Compositae mix in petrolatum--arnica (0.5%), German chamomile (2.5%), yarrow (1%), tansy (1%), and feverfew (1%)--is now favored in the literature over testing with a 0.1% sesquiterpene
lactone mix in petrolatum (alantolactone, costunolide, and dehydrocostus
lactone).
Moxidectin is a macrocyclic
lactone anthelmintic medicine that selectively binds to the parasite's glutamate-gated chloride ion channels.
TDR (the UNICEF/UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases) was instrumental in the development of moxidectin, a macrocyclic
lactone anthelmintic medicine that selectively binds to the parasite's glutamate-gated chloride ion channels.
In addition, the mutual orientation of the isopropyl substituents and the cyclopropane ring in the bicyclic
lactone 9 being formed depend stereospecifically on the mutual orientation of the substituents X and R in the tetrahydropyranyl ring.