The affinities (Ki values) of twenty two psycho-active agents, including LSD, 5-OMe DMT and a series of phenalkylamine derivatives, for cortical 5-HT1 and 5-HT2 binding sites were compared with two measures of behavioral activity. It was found that a significant correlation (r = 0.938) exists between the 5-HT2 binding affinities of these agents and their ED50 values as determined in tests of...
A novel series of N,N-dimethylisotryptamine (isoDMT) derivatives, i.e., derivatives of 1-[2-(dimethylamino)ethyl]indole, was prepared and found to be isosteric with their corresponding N,N-dimethyltryptamine (DMT) counterparts with respect to serotonin receptor (rat fundus) affinity. Whereas the isoDMT derivatives possessed a greater affinity than did their corresponding DMT derivatives, they...