Macrotetrolide actins

Macropolycyclic ligands, 942 classification, 917 metal complexes binding sites, 922 cavity size, 924 chirality, 924 conformation, 923 dimensionality, 924 electronic effects, 922 shaping groups, 923 structural effects, 922 molecular cation complexes, 947 molecular neutral complexes, 952 multidentate, 915-953 nomenclature, 920 Macrotetrolide actins metal complexes, 973 Macrotricycles anionic complexes, 951 cylindrical... 

A series of synthetic 32-membered ring macrotetrolides related to the actins have been prepared and show cation transfer ability. The K+/Na+ selectivity is however inferior to that of the actins and cyclic polyethers.563... 

The macrotetrolides (also called actins) can be isolated from ac-tinomycetes (23) as was shown by Prelog and his school. Their chemical composition according to Gerlach and Prelog (24) is depicted in Fig. 14. The homologues of nonactin monactin, dinactin and trinactin differ by... 

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