65615-90-9Relevant articles and documents
Synthesis of Enantiopure Unnatural Amino Acids by Metallaphotoredox Catalysis
Agejas, Javier,Barberis, Mario,De Frutos, Oscar,Faraggi, Tomer M.,García-Cerrada, Susana,MacMillan, David W. C.,Mateos, Carlos,Rincón, Juan A.,Rouget-Virbel, Caroline
, p. 1966 - 1973 (2021/08/18)
We describe herein a two-step process for the conversion of serine to a wide array of optically pure unnatural amino acids. This method utilizes a photocatalytic cross-electrophile coupling between a bromoalkyl intermediate and a diverse set of aryl halides to produce artificial analogues of phenylalanine, tryptophan, and histidine. The reaction is tolerant of a broad range of functionalities and can be leveraged toward the scalable synthesis of valuable pharmaceutical scaffolds via flow technology.
Tyrosine–chlorambucil conjugates facilitate cellular uptake through L-type amino acid transporter 1 (LAT1) in human breast cancer cell line MCF-7
J?rvinen, Juulia,K?rkk?inen, Jussi,Lepp?nen, Jukka,Pocasap, Piman,Rautio, Jarkko,Timonen, Juri,Weerapreeyakul, Natthida
, (2020/03/30)
l-type amino acid transporter 1 (LAT1) is an amino acid transporter that is overexpressed in several types of cancer and, thus, it can be a potential target for chemotherapy. The objectives of this study were to (a) synthesize LAT1-targeted chlorambucil d
Supramolecular self-assembly of chiral polyimides driven by repeat units and end groups
Yan, Jijun,Kang, Chuanqing,Bian, Zheng,Jin, Rizhe,Ma, Xiaoye,Gao, Lianxun
, p. 14723 - 14729 (2017/11/28)
Pyromellitic diimides (PMDIs) are effective building blocks for the construction of supramolecular systems but are infrequently used in comparison with other electron-deficient aromatic systems. We report PMDI-based chiral polyimides that form polymeric supramolecular systems with unique self-assembly features that show time-dependent spectroscopic behaviour. Extensive investigations revealed the driving forces for the self-assembly of the polyimides. One is the complementary aromatic π-π stacking between electron-accepting PMDI and electron-donating phenyl ring in the polymer backbones, and another is the hydrogen bonding interactions of the end groups. The self-assembly is readily disrupted by guest molecules with strong associations with the PMDI and the end groups. The introduction of flexible arylether diimides into the PMDI-based copolymer backbones and the sequence of PMDIs and arylether diimides in the copolymer backbones significantly influence the self-assembly of the polyimides. The results elucidate the mechanisms of polymeric self-assembly of chiral polyimides, providing important information for the development of materials based on polymeric supramolecular systems with properties and functions regulated by composition, sequence and end groups.