Substituent effects on chemosterilant activity of 2,4-di-tert-butyl-6-(4'-substituted benzyl)phenols in the house fly (Musca domestica L.)
摘要:
A series of 2,4-di-tert-butyl-6-(4'-X-benzyl)phenols was prepared, analogous to the compound Jurd 2644 (X = OMe) in an attempt to establish a Hammett relationship between the 4'-substituent and the chemosterilant activity of the compounds after oral administration to adult Musca domestica. Fourteen compounds of this type were prepared, 12 of them new. Jurd 2419 (X = H) was found to be as active in our bioassay as Jurd 2644, as were four new compounds [X = N(CH3)(2), CH3, SCH3, Cl]. All prevented successful reproduction at 30 mg/kg of diet. There was no correlation between Hammett a and activity. Active compounds all had small substituents and molecular weights below 350. The activity seemed to be determined by the bulk of X rather than by its electronic properties.
Convenient Synthesis of 2,2′- and 4,4′-Methylenebisphenols with Bulky Alkyl Substituents and Evaluation of Their Antioxidant Activity
作者:Evgeny V. Buravlev、Irina Yu. Chukicheva、Mikhail F. Borisenkov、Aleksandr V. Kutchin
DOI:10.1080/00397911.2011.589564
日期:2012.12.15
The work is devoted to a convenient procedure of the synthesis of 2,2'- and 4,4'-methylenebisphenols with alkyl substituents in heterogeneous catalysis. This compounds were obtained with yields up to 87% by reflux of 2,4- or 2,6-dialkylphenols with HCHO in n-octane in the presence of KSF clay. We found that the antioxidant activity on DPPH test for two novel methylenebisphenols having isobornyl fragments was comparable with control drugs.
Substituent effects on chemosterilant activity of 2,4-di-tert-butyl-6-(4'-substituted benzyl)phenols in the house fly (Musca domestica L.)
作者:Jan Kochansky、Charles F. Cohen、William R. Lusby
DOI:10.1021/jf00059a037
日期:1995.11
A series of 2,4-di-tert-butyl-6-(4'-X-benzyl)phenols was prepared, analogous to the compound Jurd 2644 (X = OMe) in an attempt to establish a Hammett relationship between the 4'-substituent and the chemosterilant activity of the compounds after oral administration to adult Musca domestica. Fourteen compounds of this type were prepared, 12 of them new. Jurd 2419 (X = H) was found to be as active in our bioassay as Jurd 2644, as were four new compounds [X = N(CH3)(2), CH3, SCH3, Cl]. All prevented successful reproduction at 30 mg/kg of diet. There was no correlation between Hammett a and activity. Active compounds all had small substituents and molecular weights below 350. The activity seemed to be determined by the bulk of X rather than by its electronic properties.