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- W1999692989 abstract "The present work explored 3-alkylamino-4H-1,2,4-benzothiadiazine 1,1-dioxides diversely substituted in the 7-position. Those compounds, structurally related to previously described potassium channel openers such as the benzothiadiazine dioxide BPDZ 73, were tested as putative K(ATP) channel activators on the pancreatic endocrine tissue and on the vascular smooth muscle tissue. The nature of the substituent introduced in the 7-position as well as the nature of the alkylamino side chain in the 3-position strongly affected both potency and tissue selectivity of 4H-1,2,4-benzothiadiazine 1,1-dioxides. Thus, compounds bearing in the 7-position a methyl or a methoxy group or devoid of a substituent in this position, and bearing an ethyl, an isopropyl, or a cyclobutylamino group in the 3-position were found to be potent and selective inhibitors of insulin release from rat pancreatic B-cells (i.e. 10a, 10b, 12b, 12d, 22c). In contrast, 3-alkylamino-7-trifluoromethyl- (20a-c) and 3-alkylamino-7-pentyl-4H-1,2,4-benzothiadiazine 1,1-dioxides (11a,b) expressed a marked myorelaxant activity on rat aorta ring. Among the latter compounds, the 3-alkylamino-7-pentyl derivative (11a) showed a clear selectivity for the vascular smooth muscle tissue. The present work gives new insights into the role of the substituent in both the 7- and the 3-position for the design of 4H-1,2,4-benzothiadiazine 1,1-dioxide potassium channel openers exhibiting different tissue selectivity profiles." @default.
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- W1999692989 date "2005-04-22" @default.
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- W1999692989 title "Effect on <i>K</i><sub>ATP</sub> Channel Activation Properties and Tissue Selectivity of the Nature of the Substituent in the 7- and the 3-Position of 4<i>H</i>-1,2,4-Benzothiadiazine 1,1-Dioxides" @default.
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- W1999692989 doi "https://doi.org/10.1021/jm0311339" @default.
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