Effects of alkyl substitutions of xanthine skeleton on bronchodilation

R Sakai, K Konno, Y Yamamoto, F Sanae…

Index: Sakai, Ryosuke; Konno, Kayo; Yamamoto, Yasunori; Sanae, Fujiko; Takagi, Kenzo; et al. Journal of Medicinal Chemistry, 1992 , vol. 35, # 22 p. 4039 - 4044

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Citation Number: 42

Abstract

Structure-activity relationships in a series of 1, 3, 7-trialkyl-xanthine were studied with guinea pigs. Relaxant actions in the tracheal muscle were increased with alkyl chain length at the 1- and 3-positions of the xanthine skeleton, but decreased by alkylation at the 7-position. Positive chronotropic actions in the right atrium were potentiated with 3-alkyl chain length but tended to decrease with 1-alkylation and diminish by 7-substitution. Consequently, ...