Lack of Effect of the Length of Oligoglycine- and Oligo(ethylene glycol)-Derived para-Substituents on the Affinity of Benzenesulfonamides for Carbonic Anhydrase II in Solution
摘要:
Using H-1 NMR spectroscopy, values of T-2 have been determined for the methylene protons of the oligoglycine moieties of para-substituted benzenesulfonamides having structures H2NO2SC6H4CO(Gly)(n)OH (n = 1-6) bound at the active site of bovine carbonic anhydrase II (CA, EC 4.2.1.1). These values have been correlated with measurements of dissociation constants of these complexes, in order to infer motion of these ligands when bound to the enzyme. Motion of glycines 1-3 (those closest to the aryl ring) is hindered by their proximity to the protein; motion of glycines 4-6 is relatively unhindered. Despite the restriction to motion inferred for glycines 1-3, the values of K-d for the six compounds (n = 1-6, 1-6) are indistinguishable within experimental uncertainty (+/-20%): K-d in mu M (n) 0.30 (1); 0.26 (2); 0.33 (3); 0.37 (4); 0.37 (5); 0.34 (6). There is, therefore, an unexpected compensation of the loss in conformational entropy on binding by another contributor to the free energy.
BRM TARGETING COMPOUNDS AND ASSOCIATED METHODS OF USE
申请人:Arvinas Operations, Inc.
公开号:US20190300521A1
公开(公告)日:2019-10-03
The present disclosure relates to bifunctional compounds, which find utility as modulators of SMARCA2 or BRM (target protein). In particular, the present disclosure is directed to bifunctional compounds, which contain on one end a ligand that binds to the Von Hippel-Lindau E3 ubiquitin ligase, and on the other end a moiety which binds the target protein, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein are treated or prevented with compounds and compositions of the present disclosure.
Directed, Palladium(II)-Catalyzed Intermolecular Aminohydroxylation of Alkenes Using a Mild Oxidation System
作者:Tian Zeng、Zhen Liu、Michael A. Schmidt、Martin D. Eastgate、Keary M. Engle
DOI:10.1021/acs.orglett.8b01440
日期:2018.7.6
A palladium(II)-catalyzed β,γ-aminohydroxylation reaction of nonconjugated alkenyl carbonylcompounds has been developed. This reaction utilizes a cleavable bidentate directing group to achieve regioselective aminopalladation. The resulting chelation-stabilized alkylpalladium(II) intermediate is then hydroxylated using oxygen/2,6-dimethylbenzoquinone in HFIP as the mild oxidation system. Under the
申请人:GREEN CROSS MEDIS Corp. 주식회사 녹십자메디스(120090236968) Corp. No ▼ 135111-0087407BRN ▼410-81-93457
公开号:KR101620093B1
公开(公告)日:2016-05-13
본 발명은 신규한 쿠마린 유도체 및 이의 제조방법에 관한 것이다. 본 발명에 따른 쿠마린 유도체는 수용액에서 용해도가 우수하고 형광을 갖는 쿠마린 모체에 아미노페닐보론산을 도입함으로써, 당화혈색소와 높은 결합력을 갖는 보론산에 의해 혈액 속에 있는 당화혈색소와 결합력이 높아져 혈액 속의 당화혈색소 존재 유무를 선택적 발광성을 통해 확인할 수 있으며, 당화혈색소의 인지 능력을 증대시킬 수 있다. 따라서, 본 발명에 따른 쿠마린 유도체는 당화혈색소에 대하여 선택적 결합력이 있고 결합 전후에 형광 변화를 나타낼 수 있으므로, 혈액에서 당화혈색소 검출용 센서로 유용하게 사용될 수 있다.
Catalytic Enantioselective Intermolecular Desymmetrization of 3-Substituted Oxetanes
作者:Zhaobin Wang、Zhilong Chen、Jianwei Sun
DOI:10.1002/anie.201300188
日期:2013.6.24
ring‐opening process features low catalyst loading, mild reaction conditions, broad functional group compatibility, high enantioselectivity, and the capability to generate chiral quaternarycenters. The highly functionalized desymmetrization products are versatile chiral buildingblocks in organic synthesis.