1
|
Butera R, Shrinidhi A, Kurpiewska K, Kalinowska-Tłuścik J, Dömling A. Fourfold symmetric MCR's via the tetraisocyanide 1,3-diisocyano-2,2-bis(isocyanomethyl)propane. Chem Commun (Camb) 2020; 56:10662-10665. [DOI: 10.1039/d0cc04522e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a gram-scale synthesis of the novel tetraisocyanide 1,3-diisocyano-2,2-bis(isocyanomethyl)propane and applied this in unprecedented fourfold Ugi four-component and Passerini three-component reaction achieving unique symmetric structures.
Collapse
Affiliation(s)
- Roberto Butera
- University of Groningen
- Department of Drug Design
- A. Deusinglaan 1
- 9713 AV Groningen
- The Netherlands
| | - Annadka Shrinidhi
- University of California
- Department of Chemistry & Biochemistry
- San Diego
- USA
| | - Katarzyna Kurpiewska
- Department of Crystal Chemistry and Crystal Physics Faculty of Chemistry
- Jagiellonian University
- Poland
| | | | - Alexander Dömling
- University of Groningen
- Department of Drug Design
- A. Deusinglaan 1
- 9713 AV Groningen
- The Netherlands
| |
Collapse
|
2
|
Li JR, Ross SS, Liu Y, Liu YX, Wang KH, Chen HY, Liu FT, Laurence TA, Liu GY. Engineered Nanostructures of Haptens Lead to Unexpected Formation of Membrane Nanotubes Connecting Rat Basophilic Leukemia Cells. ACS NANO 2015; 9:6738-6746. [PMID: 26057701 PMCID: PMC4758354 DOI: 10.1021/acsnano.5b02270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A recent finding reports that co-stimulation of the high-affinity immunoglobulin E (IgE) receptor (FcεRI) and the chemokine receptor 1 (CCR1) triggered formation of membrane nanotubes among bone-marrow-derived mast cells. The co-stimulation was attained using corresponding ligands: IgE binding antigen and macrophage inflammatory protein 1α (MIP1 α), respectively. However, this approach failed to trigger formation of nanotubes among rat basophilic leukemia (RBL) cells due to the lack of CCR1 on the cell surface (Int. Immunol. 2010, 22 (2), 113-128). RBL cells are frequently used as a model for mast cells and are best known for antibody-mediated activation via FcεRI. This work reports the successful formation of membrane nanotubes among RBLs using only one stimulus, a hapten of 2,4-dinitrophenyl (DNP) molecules, which are presented as nanostructures with our designed spatial arrangements. This observation underlines the significance of the local presentation of ligands in the context of impacting the cellular signaling cascades. In the case of RBL, certain DNP nanostructures suppress antigen-induced degranulation and facilitate the rearrangement of the cytoskeleton to form nanotubes. These results demonstrate an important scientific concept; engineered nanostructures enable cellular signaling cascades, where current technologies encounter great difficulties. More importantly, nanotechnology offers a new platform to selectively activate and/or inhibit desired cellular signaling cascades.
Collapse
Affiliation(s)
- Jie-Ren Li
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Shailise S. Ross
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Yang Liu
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Ying X. Liu
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Kang-hsin Wang
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Huan-Yuan Chen
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California 95817, United States
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, ROC
| | - Fu-Tong Liu
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California 95817, United States
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, ROC
| | - Ted A. Laurence
- Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Gang-yu Liu
- Department of Chemistry, University of California, Davis, California 95616, United States
| |
Collapse
|
3
|
Maher TR, Spaeth AD, Neal BM, Berrie CL, Thompson WH, Day VW, Barybin MV. Linear 6,6'-biazulenyl framework featuring isocyanide termini: synthesis, structure, redox behavior, complexation, and self-assembly on Au(111). J Am Chem Soc 2010; 132:15924-6. [PMID: 20977232 DOI: 10.1021/ja108202d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The key step in accessing the title species (5), the first nonbenzenoid diisocyanobiaryl, involved an unexpected homocoupling of a 6-bromoazulene derivative. The reversible 2e(-) reduction of 5 was addressed electrochemically and computationally. The shifts in energies of the S(0)→S(1) and S(0)→S(2) transitions for a series of related 6,6'-biazulenyl derivatives correlate with the e(-)-donating/-withdrawing strength of their 2,2'-substituents but follow opposite trends. Species 5 adsorbs end-on (η(1)) to the Au(111) surface via one of its -NC groups to form a 2-nm-thick film. In addition, bimetallic coordination of 5's -NC termini can be readily achieved.
Collapse
Affiliation(s)
- Tiffany R Maher
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, USA
| | | | | | | | | | | | | |
Collapse
|