The present invention provides a compound of Formula (I) or the pharmaceutically acceptable salts, esters, and prodrugs thereof, which are ERK2 inhibitors. The invention also provides a pharmaceutical composition comprising an effective amount of at least one compound of Formula (I) and a pharmaceutically acceptable carrier. The invention also provides a pharmaceutical composition comprising an effective amount of at least one compound of Formula (I) and an effective amount of at least one other pharmaceutically active ingredient (such as, for example, a chemotherapeutic agent), and a pharmaceutically acceptable carrier.
Catalytic Hydroetherification of Unactivated Alkenes Enabled by Proton‐Coupled Electron Transfer
作者:Elaine Tsui、Anthony J. Metrano、Yuto Tsuchiya、Robert R. Knowles
DOI:10.1002/anie.202003959
日期:2020.7.13
We report a catalytic, light‐driven method for the intramolecular hydroetherification of unactivated alkenols to furnish cyclic ether products. These reactions occur under visible‐light irradiation in the presence of an IrIII‐based photoredox catalyst, a Brønsted base catalyst, and a hydrogen‐atom transfer (HAT) co‐catalyst. Reactive alkoxy radicals are proposed as key intermediates, generated by direct
我们报告了一种催化光驱动方法,用于未活化烯醇的分子内加氢醚化以提供环醚产品。这些反应在 Ir III基光氧化还原催化剂、布朗斯台德碱催化剂和氢原子转移 (HAT) 助催化剂存在下在可见光照射下发生。反应性烷氧基被认为是关键中间体,是通过质子耦合电子转移机制直接均裂激活醇 O−H 键而产生的。该方法表现出广泛的底物范围和高官能团耐受性,并且适应多种烯烃取代模式。还提出了证明该催化系统扩展到碳醚化反应的结果。
Singlet vs Triplet Reactivity of Photogenerated α,<i>n</i>-Didehydrotoluenes
respectively, in the formation of triplet α,2- and α,4-DHTs, whose diradicalreactivity led to both radical and polar products. On the other hand, irradiation of the meta-precursor led to the singlet α,3-DHT isomer. The latter showed a marked preference for the formation of polar products and this was rationalized, as supported by computational evidence, via the involvement of a zwitterionic species arising through
Controlling factors determining the regiochemistry of intramolecular alkoxymercuration
作者:Yasuhisa Senda、Hiroko Kanto、Hiroki Itoh
DOI:10.1039/a608003k
日期:——
The intramolecular alkoxymercuration of
(E)-5-arylpent-4-en-1-ols indicated that the
regioselectivity is closely related to the Hammett constants of the
para-substituents on the benzene ring. Large solvent effects on
the regioselectivity were also observed. These results were compared
with those of the methoxymercuration of β-methylstyrene analogues.
The regioselectivity is discussed in terms of steric effects as well as
the electronic effects which are suggested by the MO calculation for the
mercurinium ion intermediates.