A cyclohexane tricarboxylic acid is shown to be a good spacer for phosphate guests. The combination of 8-aminochromenone-2-carboxamide groups with the cyclohexane spacer leads to a versatile receptor which sets six hydrogen bonds with either phosphonic acids or phosphates. Large association constants are obtained for this receptor in DMSO and methanol when tetraalkylammonium phosphates are used as guests.
The activated core approach to combinatorial chemistry: A selection of new core molecules
摘要:
Four new activated core molecules suitable for use in solution-phase combinatorial organic chemistry have been prepared. These molecules represent an attempt to further explore shape-space and increase the structural diversity of prepared libraries, as well as to incorporate recognition elements in the cores to increase the chances for interaction with biological targets. Demonstrations of deconvolution strategies used to simplify complex libraries and build individual molecular species based on the cores are also provided. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.