Novel acyclic ligands for metal cations based on the adjacent bistetrahydrofuran as analogs of natural Annonaceous acetogenins
摘要:
The acyclic ligands with an adjacent bistetrahydrofuran (THF) skeleton have been synthesized as analogs of bullatacin, a representative natural product in a family of Annonaceous acetogenins, and their binding properties toward metal cations have been investigated. The dihydroxyl bis-THF ligands with alkyl chains showed specific binding toward Ca2+, and those with acetamido groups exhibited potent binding with Ca2+ and Mg2+. The ligand with ether chains showed higher affinity toward Mg2+. These binding properties which depend on the nature of side chains and their stereochemistry have been analyzed by molecular modeling. (C) 1998 Elsevier Science Ltd. All rights reserved.