Synthesis and Octopaminergic Agonist Activity of 2-(Substituted benzylamino)-2-thiazolines.
2-(Substituted benzylamino)-2-thiazolines (SBAT) were synthesized by a hydrochloric acid-catalyzed cyclization of the corresponding thioureas, using a reaction of 2-methylthio-2-thiazoline with substituted benzylamines or by alkylating 2-amino-2-thiazoline. 2-(Alkylthio)-2-thiazolines were obtained by alkylating 2-mercaptothiazoline. Most of the SBAT compounds activated adenylate cyclase in homogenates of cockroach ventral nerve cords; the effect of introducing substituents at the phenyl of the SBAT compounds on octopaminergic agonist activity was not significant. 2-[β-(Substituted phenyl)ethylamino]-2-thiazolines and 2-(alkylthio)-2-thiazolines were not significant octopaminergic agonists. Washing removed nearly all of the activity of one of the SBAT compounds, suggesting that the SBAT compounds bound reversibly to the octopaminergic receptor.
a Department of Agricultural Chemistry , Kyushu University , Fukuoka 812 , Japan.
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Hirashima
a Department of Agricultural Chemistry , Kyushu University , Fukuoka 812 , Japan.
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Yoshii
a Department of Agricultural Chemistry , Kyushu University , Fukuoka 812 , Japan.
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Eto