One, two, and three methylene phosphonic acid groups (–CH2PO3H2) on a mesitylene ring: synthesis, characterization and aspects of supramolecular aggregation
One, two, and three methylene phosphonic acid groups (–CH2PO3H2) on a mesitylene ring: synthesis, characterization and aspects of supramolecular aggregation
Thirty-nine diethyl benzylphosphonates related to Fostedil were evaluated as calcium antagonists, using the inhibition test on aortic contraction in the rabbit, which was more selective than the negative inotropic activity test on guinea-pig left atrial muscle. Six compounds were found to have weak activity compared with Fostedil. Structure-activity relationships indicated a certain lipophilic influence; no correlation was found with electronic parameters. The prerequisite structure to obtain active products seems to require 2 conjugated aromatic rings separated by an optimal distance.