The chiral and amphiphilic aza-BODIPY dye (S)-1 exhibits kinetic-controlled self-assembly pathways toward three supramolecular polymorphs with distinct nanomorphologies and chiroptical properties. Temporal control of the kinetic transformation process from Agg. B to Agg. C leads to aggregate mixtures consisting of different ratios of Agg. B and Agg. C that show wavelength-tunable circularly polarized
手性和两亲性氮杂-BODIPY染料( S ) -1表现出动力学控制的自组装途径,形成具有不同纳米形态和手性光学性质的三种超分子多晶型物。 Agg 动力学转化过程的时间控制。 B到Agg。 C导致由不同比例的Agg组成的聚集体混合物。 B和Agg。 C显示波长可调的圆偏振发光。
Non-naturally Occurring Regio Isomer of Lysophosphatidylserine Exhibits Potent Agonistic Activity toward G Protein-Coupled Receptors
Lysophosphatidylserine (LysoPS), an endogenous ligand of G protein-coupled receptors, consists of L-serine, glycerol, and fatty acid moieties connected by phosphodiester and ester linkages, respectively. An ester linkage of phosphatidylserine can be hydrolyzed at the 1-position or at the 2-position to give 2-acyl lysophospholipid or 1-acyl lysophospholipid, respectively. 2-Acyl lysophospholipid is in nonenzymatic equilibrium with 1-acyl lysophospholipid in vivo. On the other hand, 3-acyl lysophospholipid is not found, at least in mammals, raising the question of whether the reason for this might be that the 3-acyl isomer lacks the biological activities of the other isomers. Here, to test this idea, we designed and synthesized a series of new 3-acyl lysophospholipids. Structure- activity relationship studies of more than 100 "glycol surrogate" derivatives led to the identification of potent and selective agonists for LysoPS receptors GPR34 and P2Y10. Thus, the non-natural 3-acyl compounds are indeed active and appear to be biologically orthogonal with respect to the physiologically relevant 1- and 2-acyl lysophospholipids.