The pharmacology of batrachotoxin. VII. Structure-activity relationships and the effects of pH.


The effects of the depolarizing agent, batrachotoxin (BTX), and of various analogs were studied on rat phrenic nerve-diaphragm muscle preparations at 37 degrees C. The structural modifications of BTX included: 1) replacement of the 20alpha-pyrrole-3-carboxylate moiety; 2) alterations of substituents on the pyrrole moiety; 3) clevage of the 3alpha, 9alpha… (More)


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