New compounds, compositions and methods of inhibition of Provirus Integration of Maloney Kinase (PIM kinase) activity associated with tumorigenesis in a human or animal subject are provided. In certain embodiments, the compounds and compositions are effective to inhibit the activity of at least one PIM kinase. The new compounds and compositions may be used either alone or in combination with at least one additional agent for the treatment of a serine/threonine kinase- or receptor tyrosine kinase-mediated disorder, such as cancer.
An evaluation of palladium-based catalysts for the base-free borylation of alkenyl carboxylates
作者:Gregory Gaube、Nahiane Pipaon Fernandez、David C. Leitch
DOI:10.1039/d1nj04008a
日期:——
Synthesis of organoboron derivatives is a key application of catalytic cross-coupling, with the Pd-catalyzed Miyaura borylation among the most versatile methods available. We have evaluated several Pd-based systems for borylation of alkenyl acetates and pivalates, with the optimal system heavily dependant on the substrate structure.
The present invention relates to new compounds of Formulas I and II, their tautomers, stereoisomers and polymorphs, and pharmaceutically acceptable salts, esters, metabolites or prodrugs thereof, compositions of the new compounds together with pharmaceutically acceptable carriers, and uses of the new compounds, either alone or in combination with at least one additional therapeutic agent, in the inhibition of Pim kinase activity and/or the prophylaxis or treatment of cancer.
Preparation of chiral secondary boronic esters via copper-catalyzed enantioselective conjugate reduction of β-boronyl-β-alkyl α,β-unsaturated esters
作者:Jinyue Ding、Dennis G. Hall
DOI:10.1016/j.tet.2011.07.088
日期:2012.4
A new methodology involving the copper(I)-catalyzed enantioselective conjugatereduction of β-boronyl-β-alkyl enoates was developed. Various chiral secondary boronate derivatives can be accessed in excellent yields and good to high levels of enantioselectivity through this efficient copper-catalyzed process using polymethylhydrosiloxane (PMHS) as hydride source.
Palladium-catalyzed cross-coupling reaction of bis(pinacolato)diboron with vinyl triflates β-substituted by a carbonyl group: efficient synthesis of β-boryl-α,β-unsaturated carbonyl compounds and their synthetic utility
Cross-couplingreaction of bis(pinacolato)diboron with β-(trifluoromethanesulfonyloxy)-α,β-unsaturated carbonyl compounds was carried out in the presence of PdCl2(PPh3)2–2PPh3 (3 mol%) and KOPh in toluene or K2CO3 in dioxane for the synthesis of cyclic and acyclic β-boryl-α,β-unsaturated esters, amides, and ketones in high yields. The vinylboronates thus obtained readily participated in carboncarbon
在甲苯中存在PdCl 2(PPh 3)2 –2PPh 3(3 mol%)和KOPh的情况下,双(频哪醇)二硼与β-(三氟甲磺酰氧基)-α,β-不饱和羰基化合物的交叉偶联反应或二恶烷中的K 2 CO 3以高产率合成环状和非环状的β-硼基-α,β-不饱和酯,酰胺和酮。由此获得的乙烯基硼酸酯容易参与碳-碳键的形成,例如与乙烯基三氟甲磺酸酯的交叉偶联和向α,β-不饱和酮中加成1,4-。