[EN] COMPOSITIONS AND METHODS FOR REPELLING BLOOD-SUCKING AND BITING INSECTS, TICKS AND MITES [FR] COMPOSITIONS ET MÉTHODES PERMETTANT DE REPOUSSER LES INSECTES, LES TIQUES ET LES MITES PIQUANTS ET SUCEURS DE SANG
New Class of Algicidal Compounds and Fungicidal Activities Derived from a Chromene Amide of Amyris texana
摘要:
A chromene amide, N-[2-(2,2-dimethyl-2H-1-benzopyran-6-yl)ethyl]-N,3-dimethylbutanamide, was isolated from the EtOAc extract of the leaves of Amyris texana and found to have moderate antifungal activity against Colletotrichum spp. and selective algicidal activity against Planktothrix perornata, a cyanobacterium (blue-green alga) that causes musty off-flavor in farm-raised channel catfish (Ictalurus punctatus). To improve the selective algicidal activity and provide water solubility, a series of chromene analogues were synthesized and evaluated for algicidal activity using a 96-well microplate rapid bioassay. In addition, the chromene analogues were evaluated for antifungal and phytotoxic activities. Hydrochloride salts of a chromene amine analogue showed improved water solubility and selectivity toward P. perornata with activity comparable to that of the naturally occurring chromene amide.
New Class of Algicidal Compounds and Fungicidal Activities Derived from a Chromene Amide of Amyris texana
作者:Kumudini M. Meepagala、Kevin K. Schrader、Charles L. Burandt、David E. Wedge、Stephen O. Duke
DOI:10.1021/jf101626g
日期:2010.9.8
A chromene amide, N-[2-(2,2-dimethyl-2H-1-benzopyran-6-yl)ethyl]-N,3-dimethylbutanamide, was isolated from the EtOAc extract of the leaves of Amyris texana and found to have moderate antifungal activity against Colletotrichum spp. and selective algicidal activity against Planktothrix perornata, a cyanobacterium (blue-green alga) that causes musty off-flavor in farm-raised channel catfish (Ictalurus punctatus). To improve the selective algicidal activity and provide water solubility, a series of chromene analogues were synthesized and evaluated for algicidal activity using a 96-well microplate rapid bioassay. In addition, the chromene analogues were evaluated for antifungal and phytotoxic activities. Hydrochloride salts of a chromene amine analogue showed improved water solubility and selectivity toward P. perornata with activity comparable to that of the naturally occurring chromene amide.
[EN] COMPOSITIONS AND METHODS FOR REPELLING BLOOD-SUCKING AND BITING INSECTS, TICKS AND MITES<br/>[FR] COMPOSITIONS ET MÉTHODES PERMETTANT DE REPOUSSER LES INSECTES, LES TIQUES ET LES MITES PIQUANTS ET SUCEURS DE SANG
申请人:US AGRICULTURE
公开号:WO2014137811A1
公开(公告)日:2014-09-12
Chromene derivatives based on a chromene amide isolated from Amyris texana. Also disclosed are compositions containing chromene derivatives (synthetic or natural) based on a chromene amide isolated from Amyris texana. Also methods for repelling blood-sucking and biting insects, ticks and mites involving treating (or exposing) an object (e.g., mammals such as humans) or area (e.g., a surface such as human skin) with a blood-sucking and biting insects, ticks and mites repelling effective amount of at least one compound selected from chromene derivatives (synthetic or natural) based on a chromene amide isolated from Amyris texana.