[EN] NOVEL COMPOUND, PREPARATION METHOD THEREOF, AND USE THEREOF<br/>[FR] NOUVEAU COMPOSÉ, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION
申请人:DAEGU GYEONGBUK MEDICAL INNOVATION FOUND
公开号:WO2021145729A1
公开(公告)日:2021-07-22
The present invention relates to a method for preparing a biomaterial having selectively functionalized tyrosine, a biomaterial having selectively functionalized tyrosine, and a pharmaceutical composition containing the same as an active ingredient. The method for preparing a biomaterial to which a compound represented by formula 2 is coupled, of the present invention, allows the compound represented by formula 2 to be selectively coupled, in a high yield in a biomaterial, to tyrosine, which is present on the surface of an aqueous solution such that the coupling thereof to amino acids other than tyrosine does not occur and, when only one tyrosine is present, heterogeneous mixtures are not present and the inherent activity of the biomaterial is maintained, and thus the compound can be effectively used as a pharmaceutical composition containing a biomaterial drug as an active ingredient. In addition, the method can selectively functionalize tyrosine, and thus can be effectively used for tyrosine functionalization in a biomaterial.
Enantioselective synthesis of C3 substituted benzofuroindolines via catalytic asymmetric [3 + 2] cyclization of 3-substituted indoles with p-benzoquinones
An efficient catalytic asymmetric [3 + 2] cyclization of 3-substituted indoles with p-benzoquinones has been realized using a binol-chiral phosphoric acid. A large variety of C3 substituted benzofuroindolines compounds were achieved in moderate to high yields (up to 91% yield) and excellent enantioselectivities (up to 94% ee).
Chiral Diphosphine–Palladium-Catalyzed Sequential Asymmetric Double-Friedel–Crafts Alkylation and <i>N</i>-Hemiketalization for Spiro-polycyclic Indole Derivatives
作者:Nai-Kai Li、Jun-Qi Zhang、Bing-Bing Sun、Hai-Yan Li、Xing-Wang Wang
DOI:10.1021/acs.orglett.7b00368
日期:2017.4.21
An efficient cascade asymmetric Friedel–Crafts alkylation/N-hemiketalization/Friedel–Crafts alkylation reaction of 3-alkylindoles with oxindolyl β,γ-unsaturatedα-ketoesters has been developed in the presence of a chiral diphosphine–palladium(II) catalyst. A series of enantiomerically enriched spiro-polycyclic indole derivatives have been constructed in high yields with excellent enantioselectivities
Chalcogen–Chalcogen Bonding Catalysis Enables Assembly of Discrete Molecules
作者:Wei Wang、Haofu Zhu、Shuya Liu、Zhiguo Zhao、Liang Zhang、Jingcheng Hao、Yao Wang
DOI:10.1021/jacs.9b03806
日期:2019.6.12
X-ray crystal structures, catalysis that harnesses the power of such chalcogen-chalcogen bonding interactions to produce advanced molecules remains an unresolved problem. Here, we show that a class of extraordinary chalcogen-bonding catalysts enables assembly of discrete small molecules including three β-ketoaldehydes and one indole, leading to the construction of N-heterocycles in a highly efficient manner
尽管观察到 X 射线晶体结构中硫属元素原子之间的非共价相互作用,利用这种硫属元素-硫属元素键合相互作用的力量来产生高级分子的催化作用仍然是一个悬而未决的问题。在这里,我们展示了一类非凡的硫属键合催化剂能够组装离散的小分子,包括三个 β-酮醛和一个吲哚,从而以高效的方式构建 N-杂环。这些设计合理的催化剂的强大活化能力为硫属元素键合催化的内在局限性提供了通用的解决方案。
Indole synthesis by palladium-catalyzed tandem allylic isomerization – furan Diels–Alder reaction
作者:Jie Xu、Peter Wipf
DOI:10.1039/c7ob01654a
日期:——
A Pd(0)-catalyzed elimination of an allylic acetate generates a π-allyl complex that is postulated to initiate a novel intramolecular Diels–Alder cycloaddition to a tethered furan (IMDAF). Under the reaction conditions, this convergent, microwave-accelerated cascade process provides substituted indoles in moderate to good yields after Pd-hydride elimination, aromatization by dehydration, and in situ