Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Syntheses of novel polyamine-modified minoxidil analogs (PMMs) and minoxidil–polyamine conjugates (MPCs) are described in an effort to improve the biological activity and selectivity of minoxidil and its poor solubility in water. ... Compounds relevant to this work. Compounds relevant ...