Et. Ayodele et al., Organosulfur compounds as a potential fungicides: The preparation and properties of some substituted benzyl 2-hydroxyethyl oligosulfides, PHOSPHOR SU, 159, 2000, pp. 123-142
Citations number
16
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
Compounds of the general type ArCH2SnCH2CH2OH (n = 1 - 4, Ar = Ph, 2-MeC6H4
, 4-MeC6H4, 4-ClC6H4, 4-MeOC6H4; n = 1 - 3, Ar = 2-ClC6H4; n = 2, Ar = 4-FC
6H4; n = 3 or 4, Ar = 2-furyl) have been prepared as analogues of the trisu
lfide PhCH2SSSCH2CH2OH (an antimicrobial compound which occurs in the plant
Petiveria alliacea) and their potential for application as agricultural fu
ngicides has been examined. In vitro tests against Fusarium culmorum, Fusar
ium axysporum and Gauenomyceles graminis showed that all compounds gave >80
% control of these organisms at 1000 ppm. Tests at 100 and 10 ppm showed va
rying levels of control but the activity did not depend significantly on th
e number of sulfur atoms present. Selected compounds were also shown to be
active in vivo against Erysiphe graminis on barley seedlings, Botrytis faba
e and Uromyces viciae-fabae on bean seedlings, Podosphaera leucotricha on a
pple seedlings, and Phytophthora infestans on potato leaf. The compounds we
re phytotoxic at concentrations greater than 0.33%.