2 documents found, page 1 of 1
Preparation and phytotoxicity of sorgoleone analogues
Barbosa, Luiz Cláudio de Almeida; Ferreira, Maria Lúcia; Demuner, Antonio Jacinto; Silva, Antonio Alberto da; Pereira, Rita de Cássia3,5-Dimethoxybenzylic alcohol was converted into the 2-acetoxy-5-methoxy-3-(pent-1-yl)-1,4-benzoquinone (12), in seven steps, with an overall yield of 14.6%. The natural quinone sorgoleone (1) was isolated from Sorghum bicolor and converted into the corresponding quinone (13) having a saturated side chain. The selective effects of these compounds (1, 12 and 13), at the dose of 5.6 mg of a.i./ g of substrate, on...
Evaluation of quinone herbicide activity
Ferreira, Maria Lúcia; Barbosa, Luiz Cláudio de Almeida; Demuner, Antônio Jacinto; Silva, Antônio Alberto da; Pereira, Rita de CássiaSix commercial quinones (2,5 - dihydroxy-1,4-benzoquinone [1], camphorquinone [2], phenantrequinone [3], anthrarufin [4], sodium sulfonate anthraquinone [5] and lapachol [6]) were tested as for their phytotoxic potential. The compounds were tested on Sorghum bicolor, Cucumis sativus, and Desmodium tortuosum cultivated in washed sand in Petri dishes and on Lactuca sativa, Cucumis sativus, Desmodium tortuosum, Hy...