Photosynthetic electron transport inhibition by pyrimidines and pyridines substituted with benzylamino, methyl and trifluoromethyl groups

Citation
S. Ohki et al., Photosynthetic electron transport inhibition by pyrimidines and pyridines substituted with benzylamino, methyl and trifluoromethyl groups, Z NATURFO C, 56(3-4), 2001, pp. 203-210
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Biochemistry & Biophysics
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES
ISSN journal
0939-5075 → ACNP
Volume
56
Issue
3-4
Year of publication
2001
Pages
203 - 210
Database
ISI
SICI code
0939-5075(200103/04)56:3-4<203:PETIBP>2.0.ZU;2-M
Abstract
The decrease of the number of ring nitrogen atoms of 2-benzylamino-4-methyl -6-trifluoromethyl-1,3,5-triazines on herbicidal activity and inhibition of photosynthetic electron transport (PET) was assayed using thylakoids from Spinacia oleracea or atrazine-resistant Chenopodium album. Three 2-benzylam ino-4-methyl-6-trifluoromethyl-1,3,5-triazines, nine pyrimidines with a ben zylamino-, methyl- and trifluoromethyl-group, 2-benzylamino-6-methyl-4-trif luoromethyl- pyridine and N-benzyl-3-methyl-5-trifluoromethylaniline were s ynthesized and assayed. 2-(4-Bromobenzylamino)-4-methyl-6-trifluoromethylpy rimidine exhibited the highest PET inhibitory activity against Spinacia ole racea thylakoids of all compounds tested. The 2-benzylaminopyrimidines and 2-methylpyrimidines having a 4-halobenzylamino group exhibited higher PET i nhibition than atrazine and 2-trifluoromethylpyrimidines against Spinacia o leracea thylakoids. These PET inhibitory active compounds also exhibited a strong and similar inhibition both against atrazine-resistant Chenopodium a lbum thylakoids as well as against thylakoids from wild-type Chenopodium. T he herbicidal activity of 4-(4-bromobenzylamino)-2-methyl-6- trifluoromethy lpyrimidine was equivalent to that of known herbicides like simetryne, sima zine or atrazine.