0000000000034705
AUTHOR
Xin Wei
Selective Formation of S4- and T-Symmetric Supramolecular Tetrahedral Cages and Helicates in Polar Media Assembled via Cooperative Action of Coordination and Hydrogen Bonds
We report on the synthesis and self-assembly study of novel supramolecular monomers encompassing quadruple hydrogen-bonding motifs and metal-coordinating 2,2'-bipyridine units. When mixed with metal ions such as Fe2+ or Zn2+, the tetrahedron cage complexes are formed in quantitative yields and full diastereoselectivity, even in highly polar acetonitrile or methanol solvents. The symmetry of the complexes obtained has been shown to depend critically on the flexibility of the ligand. Restriction of the rotation of the hydrogen-bonding unit with respect to the metal-coordinating site results in a T-symmetric cage, whereas introducing flexibility either through a methylene linker or rotating be…
A phase IB, multicenter, open-label study to assess the safety, tolerability, and efficacy of the pleiotropic pathway modifier CC122 administered orally to patients with advanced HCC.
379 Background: CC122 is a novel cereblon-modulating agent with multiple biologic activities including potent immunomodulatory and antiangiogenic effects. CC-122 binding to cereblon promotes ubiquitination and subsequent degradation of lymphoid transcription factors Ikaros and Aiolos resulting in activation of T cells. Methods: Following establishment of oral CC122 3 mg daily (QD) as the MTD in phase 1a (Blood 122:2905 2013), an expansion cohort of advanced Hepatocellular Carcinoma (HCC) subjects was enrolled. All subjects had progressed on or were intolerant to sorafenib. Efficacy was assessed per RECIST 1.1 criteria. Results: As of Jan. 13, 2016, 25 advanced HCC subjects were enrolled. T…
Selective Formation of S4- and T-Symmetric Supramolecular Tetrahedral Cages and Helicates in Polar Media Assembled via Cooperative Action of Coordination and Hydrogen-Bonds
We report on the synthesis and self-assembly study of novel supramolecular monomers encompassing quadruple hydrogen-bonding motifs and metal coordinating 2,2’-bipyridine units. When mixed with metal ions such as Fe2+ or Zn2+, the tetrahedron cage complexes are formed in quantitative yields and full diastereoselectivity, even in highly polar acetonitrile or methanol solvents. The symmetry of the complexes obtained has been shown to depend critically on the flexibility of the ligand. Restriction of the rotation of the hydrogen-bonding unit with respect to the metal coordinating site results in a T-symmetric cage, whereas by introducing flexibility either through a methylene linker or rotating…
CCDC 1951280: Experimental Crystal Structure Determination
Related Article: Qixun Shi, Xiaohong Zhou, Wei Yuan, Xiaoshi Su, Algirdas Neniškis, Xin Wei, Lukas Taujenis, Gustautas Snarskis, Jas S. Ward, Kari Rissanen, Javier de Mendoza, Edvinas Orentas|2020|J.Am.Chem.Soc.|142|3658|doi:10.1021/jacs.0c00722