[EN] RNA POLYMERASE INHIBITORS AND METHODS USING SAME [FR] INHIBITEURS D'ARN POLYMÉRASE ET PROCÉDÉS LES UTILISANT
摘要:
The present disclosure relates to compounds of formula (I) and compositions thereof, which are useful for the treatment, amelioration, or prevention of coronavirus infections. A1is selected from the group consisting of (II), (III) and (IV).
<sup>31</sup>P NMR Chemical Shift Tensors: Windows into Ruthenium Phosphinidene Complex Electronic Structures
作者:Wesley J. Transue、Yizhe Dai、Martin-Louis Y. Riu、Gang Wu、Christopher C. Cummins
DOI:10.1021/acs.inorgchem.1c01099
日期:2021.7.5
studies of their 31P nuclear shielding tensors by magic-angle-spinning solid-state nuclear magnetic resonance spectroscopy. Density functional theory and natural chemical shielding analyses reveal the relationship between the 31P chemicalshifttensor and the local ruthenium/phosphorus electronic structure. The general trend observed in the 31P isotropic chemicalshifts for the ruthenium phosphinidene complexes
一系列八甲基杯[4]吡咯/钌亚膦络合物(Na 2 [ 1 = PR])可以通过对应RP A(A = C 14 H 10,蒽)化合物(R = t Bu,i PR,OET,NH 2,NME 2,净2,N我PR 2,N甲,dimethylpiperidino)。叔丁基和二甲氨基衍生物的分离允许对它们的31进行比较研究P 核屏蔽张量通过魔角旋转固态核磁共振光谱。密度泛函理论和自然化学屏蔽分析揭示了31 P 化学位移张量与局部钌/磷电子结构之间的关系。在钌膦化物配合物的31 P 各向同性化学位移中观察到的一般趋势受 δ 11主张量分量的去屏蔽程度控制,这可以与 σ RuP /π RuP * 能隙相关联。R = t 的“δ 22 –δ 33交叉”效应还观察到 Bu,这是由与 σ PR和 σ PR * 自然键轨道的极化相关的不同程度的去屏蔽引起的。
Vinyl-aziridines and cyclopropanes in Pd-catalyzed (3+2)-cycloaddition reactions with cyclic N-sulfonyl imines
作者:Kim Spielmann、Eleonora Tosi、Aurélien Lebrun、Gilles Niel、Arie van der Lee、Renata Marcia de Figueiredo、Jean-Marc Campagne
DOI:10.1016/j.tet.2018.09.040
日期:2018.11
Efficient palladium-catalyzed (3 + 2)-cycloaddition reactions of cyclic N-sulfonyl imines and vinyl-aziridines (or cyclopropanes) have been achieved. The reactions, with either vinylic substrate, proceed with excellent yields affording highly functionalized imidazolidine and pyrrolidine derivatives. The cycloadditions take place via the reaction of zwitterionic π-allyl palladium intermediates with