A novel series of C3-functionalized oxindoles, 3-(2-oxo-4-phenylbut-3-en-1-ylidene) indolin-2-ones as potential Pim-1 kinase inhibitors, were designed, synthesized and investigated for inhibition of human cancer-cell proliferation.
Asymmetric cross aldol addition of isatins with α,β-unsaturated ketones catalyzed by a bifunctional Brønsted acid–Brønsted base organocatalyst
作者:Guo-Gui Liu、Hua Zhao、Yu-Bao Lan、Bin Wu、Xiao-Fei Huang、Jian Chen、Jing-Chao Tao、Xing-Wang Wang
DOI:10.1016/j.tet.2012.03.042
日期:2012.5
The asymmetric cross-aldol reaction of isatins with α,β-unsaturated ketones has been developed under catalysis by a Cinchona alkaloid-derivated bifunctional Brønsted acid–Brønsted base catalyst, affording the aldol adducts in moderate to good yields (18–98%) with moderate to good enantioselectivities (30–97%). The noncovalent organo-catalyzed asymmetric cross-aldol reaction displays a broad substrate
Photocatalyzed Csp<sup>3</sup>–Csp<sup>3</sup> cross-dehydrogenative coupling of <i>N</i>-Boc-tetrahydroisoquinolines with α,β-unsaturated ketones
作者:Na-Ri-Mei Ao、Xue-Qing Zhu、Chun-Xin Zhao、Ya-Ru Gao、Yong-Qiang Wang
DOI:10.1039/d1ob00527h
日期:——
A novel photocatalyzed cross-dehydrogenative coupling reaction of N-Boc-tetrahydroisoquinolines with α,β-unsaturatedketones has been developed. This research provides an easy access to a variety of C1-substituted tetrahydroisoquinolines, which can be further transformed into benzo[a]-quinolizine-2-ones, the skeletons of natural products with a wide range of biological activities. The load of the photocatalyst
开发了一种新型光催化N -Boc-四氢异喹啉与 α,β-不饱和酮的交叉脱氢偶联反应。这项研究提供了一种容易获得各种 C1 取代的四氢异喹啉的方法,这些四氢异喹啉可以进一步转化为具有广泛生物活性的天然产物骨架苯并[ a ]-quinolizine-2-ones。光催化剂的负载量低,氧化剂便宜且毒性较小。
Synthesis of Enones and Enals via Dehydrogenation of Saturated Ketones and Aldehydes
作者:Gao-Fei Pan、Xue-Qing Zhu、Rui-Li Guo、Ya-Ru Gao、Yong-Qiang Wang
DOI:10.1002/adsc.201801058
日期:2018.12.21
substrate scope including various linear or cyclic saturated ketones and aldehydes. The protocol is ligand‐free, and molecular oxygen is used as the sole clean oxidant in the reaction. Due to mild reaction conditions, good functional group compatibility, and versatile utilities of enones and enals, the method can be applied in the late‐stage synthesis of natural products, pharmaceuticals and fine chemicals
A polystyrene-supported 9-amino(9-deoxy)epi quinine derivative for continuous flow asymmetric Michael reactions
作者:Javier Izquierdo、Carles Ayats、Andrea H. Henseler、Miquel A. Pericàs
DOI:10.1039/c5ob00325c
日期:——
derivative catalyzes Michael reactions affording excellent levels of conversion and enantioselectivity using different nucleophiles and structurally diverse enones. The highly recyclable, immobilized catalyst has been used to implement a single-pass, continuous flow process (residence time: 40 min) that can be operated for 21 hours without significant decrease in conversion and with improved enantioselectivity