Synthesis of philanthotoxin analogs with a branched polyamine moiety
作者:Aristotle G. Kalivretenos、Koji Nakanishi
DOI:10.1021/jo00076a017
日期:1993.11
Philanthotoxin (PhTX-433), a potent noncompetitive inhibitor of the L-glutamate receptors and the nicotinic acetylcholine receptors of vertebrates and invertebrates, has a butyryl-tyrosyl-thermo-spermine structure. Several synthetic analogs of PhTX with hydrophobic alkyl branches in the polyamine chain exhibit 6- to 10-fold enhanced activities to various receptors. Because the branched analogs exhibit such unique activities and because of their importance in tertiary structural studies of ligand/receptor binding, methods for preparing branched PhTX analogs, including photolabile analogs, are presented.
A compound, comprising: an Fe(III)-binding and/or Fe(III)-bound siderophore; one or more optional linker covalently bound to the siderophore; and daptomycin covalently bound to the linker, or, if no linker is present, then to the siderophore; or pharmaceutically acceptable salt or solvate thereof.