Synthesis and Self-Assembly of Supramolecular Dendritic “Bow-Ties”: Effect of Peripheral Functionality on Association Constants
摘要:
Self-assembled polyester dendritic bow-ties with various peripheral groups were prepared, and their association constants were measured by H-1 NMR in CDCl3. The two complementary dendrons were prepared by attachment of either a bis(adamantylurea) or a glycinylurea to the focal point of the dendron. The parent self-assembled system with benzylidene acetals on one periphery and isopropylidene acetals on the other had an association constant of 520 M-1. Upon deprotection of one dendron, the association constant is increased by more than an order of magnitude as the solubility of the hydroxyl-terminated dendron in CDCl3 is decreased. In contrast, attachment of tri(ethylene oxide) units to the periphery of one dendron lowers the association constant by almost an order of magnitude. The causes of these relatively large changes in complex strength are discussed in terms of solubility, steric effects, competitive hydrogen bonding, and the structure of the dendritic scaffold.
5-HT4receptors are known to form constitutive dimers in membranes. To explore whether multivalency can enhance ligand interactions and/or efficacy in 5-HT4receptors, the structure of the partial agonist ML10302 was modified with oligo(ethylene glycol) chains, thus generating, by a gradual approach, short and long tethered bivalent or tetravalent ligands and the corresponding spanner-linked monovalent
The present invention relates to compound (I) or a salt thereof which has a RORγt inhibitory action.
wherein each symbol is as defined in the specification.
本发明涉及具有 RORγt 抑制作用的化合物 (I) 或其盐。
其中各符号如说明书中所定义。
Heterocyclic compound
申请人:TAKEDA PHARMACEUTICAL COMPANY LIMITED
公开号:US10053468B2
公开(公告)日:2018-08-21
The present invention relates to compound (I) or a salt thereof which has a RORγt inhibitory action.
wherein each symbol is as defined in the specification.