Structure-Activity Relationship (SAR) studies of benzoxazinones, their degradation products, and analogues.

Phytotoxicity on problematic weeds L. and Gaud.

dc.creatorMacías, Francisco A.
dc.creatorMarín, David
dc.creatorOliveros Bastidas, Alberto
dc.creatorCastellano, Diego
dc.creatorSimonet, Ana M.
dc.creatorMolinillo G., José
dc.date2007-04-09
dc.date2007-04-09T09:00:00Z
dc.date2007-04-09T09:00:00Z
dc.date2006-01-01
dc.date2007-04-09T09:00:00Z
dc.date.accessioned2022-11-16T18:54:04Z
dc.date.available2022-11-16T18:54:04Z
dc.identifierT016300003775/0
dc.identifierhttp://www.saber.ula.ve/handle/123456789/16803
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5202016
dc.descriptionStructure-activity relationship (SAR) studies of benzoxazinones, their degradation products, and analogues. Phytotoxicity on problematic weeds Avena fatua L. and Lolium rigidum Gaud. (Macías, Francisco A.; Marín, David; Oliveros Bastidas, Alberto; Castellano, Diego; Simonet, Ana M. y Molinillo G., José Abstract Avena fatua L. (wild oat) and Lolium rigidum Gaud. (rigid ryegrass) are highly problematic weeds affecting a wide variety of cereal crops worldwide. The fact that both of these weeds have developed resistance to several herbicide groups made them optimal candidates as target organisms for ongoing research about the potential application of allelochemicals and analogue compounds as natural herbicide models. Benzoxazinones, a family of natural allelochemicals present in corn, wheat, and rye, including 2,4-dihydroxy-(2H)-1,4-benzoxazin-3(4H)-one and 2,4-dihydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one, together with some degradation products, found in crop soils as well as in other systems, and some synthetic analogues of them were tested on wild oat and rigid ryegrass seeds; the results were statistically treated, and some structure-activity relationships, useful in further development of natural herbicide models, were elucidated. The most active compounds were the synthetic benzoxazinone 2-acetoxy-(2H)-1,4-benzoxazin-3(4H)-one and the degradation product 2-aminophenoxazin-3-one, with highly significant inhibition on the development of both weeds. The ecological role of these compounds is discussed by considering both degradability and phytotoxicity. The bioactivity of aminophenoxazines has been correlated by their aqueous solubility-lipophilicity predicted by means of computational methods.
dc.descriptionfamacias@uca.es
dc.descriptionaloliver@ula.ve
dc.descriptionNivel monográfico
dc.format367746
dc.formatapplication/pdf
dc.formattext/html
dc.languagees
dc.publisherSABER ULA
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/3.0/ve/
dc.subjectGrupo de Química Ecológica
dc.subjectDepartamento de Química
dc.subjectEscuela de Ciencias.
dc.subjectFacultad de Ciencias.
dc.subjectAllelopathy
dc.subjectStructure Activity Relationships (SAR)
dc.subjectBenzoxazinones
dc.subjectAminophenoxazines
dc.subjectDIBOA
dc.subjectDIMBOA
dc.subjectWild oat
dc.subjectRigid ryegrass
dc.subjectBioassay
dc.subjectPhytotoxicity
dc.subjectArtículos
dc.titleStructure-Activity Relationship (SAR) studies of benzoxazinones, their degradation products, and analogues.
dc.titlePhytotoxicity on problematic weeds L. and Gaud.
dc.typeinfo:eu-repo/semantics/article


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