126463-86-3

Upstream product

• 4093-31-6 methyl 2-methoxy 4-acetamido 5-chloro benzoate 
• 126463-85-2 4-acetylamino-5-chloro-2-methoxy-3-nitro-benzoic acid methyl ester 

Relevant academic research and scientific papers

Synthesis and structure-activity relationships of 4-amino-5-chloro-N-(1,4- dialkylhexahydro-1,4-diazepin-6-yl)-2-methoxybenzamide derivatives, novel and potent serotonin 5-HT3 and dopamine D2 receptors dual antagonist

In search of a dopamine D2 and serotonin 5-HT3 receptors dual antagonist as a potential broad antiemetic agent, a number of benzamides were prepared from 4-amino-5-chloro-2-methoxybenzoic acid derivatives and 6-amino-1,4-dialkylhexahydro-1,4-diazepines and evaluated for their binding affinity for the dopamine D2 and the serotonin 5-HT3 receptors using rat brain synaptic and rat cortical membranes, respectively. From the results of both in vitro receptor binding and in vivo biological assays for the dopamine D2 receptor, 1-ethyl-4-methylhexahydro-1,4- diazepine ring was selected as an optimum amine moiety. Introduction of one methyl group on the nitrogen atom at the 4-position and/or modification of the substituent at the 5-position of the 4-amino-5-chloro-2-methoxybenzoyl moiety caused a marked increase in the dopamine D2 receptor binding affinity along with a potent 5-HT3 receptor binding affinity. Among the compounds, 5-chloro-N-(1-ethyl-4-methylhexahydro-1,4-diazepin-6-yl)-2-methoxy-4- methylaminobenzamide (82), 5-bromo (110), and 5-iodo (112) analogues exhibited a much higher affinity for the dopamine D2 receptor than that of metoclopramide (IC50=17.5-61.0 nM vs. 483 nM). In particular, 82 showed a potent antagonistic activity for both receptors in vivo tests. Optical resolution of the racemate 82 brought about a dramatic change in the pharmacological profile with the (R)-enantiomer exhibiting a strong affinity for both the dopamine D2 and the 5-HT3 receptors, while the corresponding (S)-enantiomer had a potent and selective serotonin 5-HT 3 receptor binding affinity.

A novel series of 6-methoxy-1H-benzotriazole-5-carboxamide derivatives with dual antiemetic and gastroprokinetic activities

A novel series of 6-methoxy-1H-benzotriazole-5-carboxamide derivatives with a medium perhydroazacycle ring in the amine moiety were prepared, and their antiemetic and gastroprokinetic activities were evaluated. Among them, N-(1-ethylhexahydroazepin-3-yl)-, N-(1-ethyloctahydroazocin-3-yl)- and N-(1- ethyloctahydroazonin-3-yl)-6-methoxy-1H-benzotriazole-5-carboxamides (24, 36, 37) showed a potent antiemetic activity (inhibition of apomorphine-induced emesis in dogs) along with gastroprokinetic activity (gastric emptying in rats).

Studies on anti-platelet agents. II. Synthesis and platelet-inhibitory activity of 5-methyl-4-(3-pyridyl)-2-(substituted benzimidazol-5- yl)imidazoles

A series of 5-methyl-4-(3-pyridyl)-2-(substituted benzimidazol-5- yl)imidazole derivatives was synthesized and tested for anti-platelet and vasodilatory activities. Some compounds were found to have potent activities and low acute toxicity. In particular,