Hit-to-lead optimization of novel benzimidazole phenylacetamides as broad spectrum trypanosomacides
作者:Nicole McNamara、Raphael Rahmani、Melissa L. Sykes、Vicky M. Avery、Jonathan Baell
DOI:10.1039/d0md00058b
日期:——
Trypanosomacruzi and Trypanosoma brucei are the parasitic causative agents of Chagasdisease and human African trypanosomiasis (HAT), respectively. The drugs currently used to treat these diseases are not efficacious against all stages and/or parasite sub-species, often displaying side effects. Herein, we report the SAR exploration of a novel hit, 2-(4-chlorophenyl)-N-(1-propyl-1H-benzimidazol-2-yl)acetamide
The present invention relates to novel benzimidazole derivatives, their preparation, their use as pharmaceuticals and pharmaceutical compositions containing them, wherein the compounds have the formula (I):
in which the substitutents are as defined in claim
1
and salts, solvates, hydrates and N-oxides thereof.
A “One-Pot” Phase Transfer Alkylation/Hydrolysis of<i>o</i>-Nitrotrifluoroacetanilides. A Convenient Route to<i>N</i>-ALKYL<i>o</i>-Phenylenediamines
作者:Samuel A. Brown、Carmelo J. Rizzo
DOI:10.1080/00397919608003827
日期:1996.11
Abstract A variety of o-nitrotrifluoroacetanilides undergo a one-pot alkylation/hydrolysis to give N-alkyl o-nitroanilines in 40–94% yield. Dimethylsulfate, benzyl bromide and 1-bromo-propane were used as the electrophiles.
A fused heterocyclic compound of formula (1):
wherein, A
1
and A
2
represent a nitrogen atom or the like, R
1
, R
2
, R
3
and R
4
represent a halogen atom or the like, R
2
and R
3
represent a halogen atom or the like, R
5
represents a C1-C6 chain hydrocarbon group optionally substituted with one or more halogen atoms, or the like, R
6
and R
7
represent a C1-C4 chain hydrocarbon group substituted with one or more halogen atoms, or the like, and n represents 0 or 1,
has an excellent noxious arthropod controlling effect.