Mildew compounds

Karathane A trade name for 2,4-dinitro-6-( 1 -methylheptyl)phenyl crotonate, CJ8H24N2O6, a compound which has both acaricidal and fungicidal activity. It is a red-brown oil of high boiling point, insoluble in water but soluble in most organic solvents. Karathane is used for the control of powdery mildew, and is nontoxic to mammals. 

Boron, as barium metaborate, is marketed as a mildew preventative for paints (273). Borax is used as a wood preservative, and an organic boron, 2,2 -(l-methyltrimethylenedioxy)-bis(4,4,6-trimethyl)-l,3,2-dioxaborinane (Biobor JF) [14697-50-80] is a biocide for jet fuel (274). Whereas tin metal is used to coat steel cans used as food containers, organic tin in the form of tributyl tin compounds have proven to be powerfiil antimicrobials, and have found use in antifouHng coatings for ship bottoms, paints, and wood preservatives (275). 

Copper compounds are used in agriculture to treat mildew and other plant diseases in the food industry as preservatives, additives, or coloring agents in preservatives of wood, leather, and fabrics in coin manufacture and in water treatment (ATSDR1990 Roncero et al. 1992). The use of copper-containing pesticides is traditional along the Mediterranean Coast, especially the use of Bordeaux mixture, a copper sulfate-based fungicide that has been widely used for more than a century to... 

Table I. Control of Bean Powdery Mildew (BPM) by a,a-Diphenylmethaneheterocyclic Compounds Applied at 400 ppm...

Another parameter investigated was the usefulness of different substituents other than hydrogen or hydroxyl on the Of-carbon. Table II provides the relative activity of several diphenylmethyl substituted 5-pyrimidines. Clearly, the hydroxyl substituted compound is the most active against bean powdery mildew. 

Because benzanilides exhibit fungicidal activity 38) and anthranilic acid esters have fungicidal and bactericidal activities 39,40), Kirino et al. attempted to derive a new class of fungicides from those having a hybrid structure, methyl N-(substituted benzoyl)anthranilates 41. Among various derivatives, m-substituted compounds (19) were shown to exhibit appreciable preventive activity against powdery mildew of cucumber. 

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