带有 2,6-双(对甲苯氧基甲基)苯配体的双(对氟苯基)甲基阳离子的 X 射线分析显示对称结构(10-C-5),其中两个 CO 距离相同,尽管距离( 2.690(4) A) 比我们最近报道的 1,8-二甲氧基-9-二甲氧基甲基蒽单阳离子 (2.43(1) 和 2.45(1) A) 更长。然而,对具有相同苯配体的更稳定的芳香族 xanthylium 阳离子的 X 射线分析显示出四配位碳结构,其中两个氧配体中只有一个与中心碳原子配位。这些结果清楚地表明,带有空间柔性苯配体的碳正离子 (10-C-5) 对中心碳原子上的电子效应非常敏感。
Synthesis and biological evaluation of thielocin B1 analogues as protein-protein interaction inhibitors of PAC3 homodimer
作者:Kosuke Ohsawa、Masahito Yoshida、Miho Izumikawa、Motoki Takagi、Kazuo Shin-ya、Naoki Goshima、Takatsugu Hirokawa、Tohru Natsume、Takayuki Doi
DOI:10.1016/j.bmc.2018.11.001
日期:2018.12
The synthesis and biological evaluation of thielocin B1 analogues have been demonstrated. Fourteen analogues modified in the central core and terminal carboxylic acid moiety were concisely synthesized by simple esterification or etherification reaction. The evaluation of synthetic analogues as inhibitors of proteasome assembling chaperone (PAC) complexes (the PAC3 homodimer and PAC1/PAC2) revealed
base-assisted boronic acidcatalysis for the dehydrative self-condensation of carboxylic acids is described. Arylboronic acid bearing bulky (N,N-dialkylamino)methyl groups at the 2,6-positions can catalyze the intramolecular dehydrative condensation of di- and tetracarboxylic acids. This is the first successful method for the catalytic dehydrative self-condensation of carboxylic acids.
[EN] PYRROLO SULFONAMIDE COMPOUNDS FOR MODULATION OF ORPHAN NUCLEAR RECEPTOR RAR-RELATED ORPHAN RECEPTOR-GAMMA (RORGAMMA, NR1F3) ACTIVITY AND FOR THE TREATMENT OF CHRONIC INFLAMMATORY AND AUTOIMMUNE DISEASES<br/>[FR] COMPOSÉS PYRROLOSULFONAMIDES POUR LA MODULATION DE L'ACTIVITÉ DU RÉCEPTEUR ORPHELIN GAMMA APPARENTÉ AU RÉCEPTEUR NUCLÉAIRE ORPHELIN RAR (ROR-GAMMA, NR1F3) ET POUR LE TRAITEMENT DE MALADIES INFLAMMATOIRES CHRONIQUES ET AUTO-IMMUNES
申请人:PHENEX PHARMACEUTICALS AG
公开号:WO2012139775A1
公开(公告)日:2012-10-18
The invention provides modulators for the orphan nuclear receptor RORy and methods for treating RORy mediated diseases by administrating these novel RORy modulators to a human or a mammal in need thereof. Specifically, the present invention provides pyrrolo sulfonamide compounds of Formula (1) and the enantiomers, diastereomers, tautomers, solvates and pharmaceutically acceptable salts thereof.
作者:Yury Kozhemyakin、Maximilian Krämer、Frank Rominger、Andreas Dreuw、Uwe H. F. Bunz
DOI:10.1002/chem.201804095
日期:2018.10.12
The synthesis of a doubly bridged tolane is reported. The target is obtained in a five‐step synthesis, starting from commercially available 2‐amino‐meta‐xylene by a combination of a Sandmeyer reaction, radical bromination, and Stille‐type coupling, followed by double ring closing. The doubly tethered tolane is crystalline; the two phenyl rings are highly twisted with respect to each other both in solution
The present invention relates to inhibitors of aspartic proteinases, particularly, BACE. The present invention also relates to compositions thereof and methods therewith for inhibiting BACE activity in a mammal, and for treating Alzheimer's Disease and other BACE-mediated diseases.