Journal of Agricultural and Food Chemistry published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, Category: imidazoles-derivatives.
Bai, Yu-Bin published the artcileSynthesis and Antifungal Activity of 2-Chloromethyl-1H-benzimidazole Derivatives against Phytopathogenic Fungi in Vitro, Category: imidazoles-derivatives, the publication is Journal of Agricultural and Food Chemistry (2013), 61(11), 2789-2795, database is CAplus and MEDLINE.
A series of 35 benzimidazole derivatives were synthesized from 2-chloromethyl-1H-benzimidazole in good yields. Their structures were characterized by 1H and 13C NMR and HRESIMS. Antifungal activities of all of the synthesized compounds were evaluated against five phytopathogens fungi (Cytospora sp., Colletotrichum gloeosporioides, Botrytis cinerea, Alternaria solani, and Fusarium solani) using the mycelium growth rate method. Compound 1-methyl-2-(phenoxymethyl)-1H-benzo[d]imidazole (4m) displayed strong growth inhibition of C. gloeosporioides, A. solani, and F. solani with IC50 of 20.76, 27.58, and 18.60 μg/mL, resp. Selective inhibition of B. cinerea instead of the other fungal pathogenes was observed with 2-[(4-Chlorophenoxy)methyl]-1-methyl-5-nitro-1H-benzo[d]imidazole (7f) (IC50 of 13.36 μg/mL), comparable to that of pos. control, a com. agricultural fungicide hymexazol (IC50 of 8.92 μg/mL). Compound 2-(chloromethyl)-1-(methylsulfonyl)-1H-benzo[d]imidazole (5b) exhibited remarkable antifungal properties against Cytospora sp., C. gloeosporioides, B. cinerea, and F. solani with IC50 values of 30.97, 11.38, 57.71, and 40.15 μg/mL, resp.; among the target fungi, 5b was the most active compound and superior to the reference against C. gloeosporioides alone. Structure-activity relationship (SAR) data of these compounds are as follows: (1) introduction of the chlorine atom on para-position in the benzene ring help to increase activity (2-((4-chlorophenoxy)methyl)-1-methyl-1H-benzo[d]imidazole (4f) vs. 1-[4-[(1-Methyl-1H-benzo[d]imidazol-2-yl)methoxy]phenyl]ethanone (4c); 2-[(4-Chlorophenoxy)methyl]-1-methyl-5-nitro-1H-benzo[d]imidazole (7f) vs. 2-[(Benzo[d][1,3]dioxol-5-yloxy)methyl]-1-methyl-5-nitro-1H-benzo[d]imidazole (7n)), (2) the sulfonyl group is critical for the inhibition of C. gloeosporioides (5b and 2-(Chloromethyl)-1-[(4-chlorophenyl)sulfonyl]-1H-benzo[d]imidazol (5c) vs. 1-(2-(chloromethyl)-1H-benzo[d]imidazol-1-yl)ethanone (5a)), and (3) the unsubstituted benzene ring improve activity (4m vs. 2-[(Benzo[d][1,3]dioxol-5-yloxy)methyl]-1-methyl-1H-benzo[d]imidazole (4n), 2-((4-fluorophenoxy)methyl)-1-methyl-1H-benzo[d]imidazole (4e) and 1-[3-[(1-Methyl-1H-benzo[d]imidazol-2-yl)methoxy]phenyl]ethanone (4a)). Thus, compounds 5b, 4m, and 7f emerged as a new leading structure for the development of new fungicides.
Journal of Agricultural and Food Chemistry published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, Category: imidazoles-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem