R. Tanaka et al., Studies on chemical modification of monensin VIII. Synthesis of 7-O-substituted-25-carboxymonensins and their Ca2+ ion transport activity, TETRAHEDRON, 57(15), 2001, pp. 3005-3012
Monensin (1), an ionophore antibiotic agent, was converted to 25-carboxymon
ensin (2) and 7-O-substituted-25-carboxyl derivatives (3a-d), which have tw
o carboxyl groups at both ends of the molecule. Ca2+ ion transport activity
of the dicarboxylic monensins was evaluated by the CHCl3 liquid membrane m
ethod, and 25-carboxymonensins (2 and 3a-d) were shown to transport the Ca2
+ ion through the CHCl3 liquid membrane. (C) 2001 Elsevier Science Ltd. All
rights reserved.