[EN] DIPEPTIDE AND TRIPEPTIDE EPOXY KETONE PROTEASE INHIBITORS<br/>[FR] INHIBITEURS DE DIPEPTIDE ET DE TRIPEPTIDE ÉPOXY CÉTONE PROTÉASES
申请人:ONYX THERAPEUTICS INC
公开号:WO2014152127A1
公开(公告)日:2014-09-25
Provided herein are dipeptide and tripeptide epoxy ketone protease inhibitors, methods of their preparation, related pharmaceutical compositions, and methods of using the same. For example, provided herein are compounds of Formula (X): and pharmaceutically acceptable salts and compositions including the same. The compounds and compositions provided herein may be used, for example, in the treatment of proliferative diseases including cancer and autoimmune diseases.
Supported Cobalt Nanoparticles for Hydroformylation Reactions
作者:Maximilian Franz Hertrich、Florian Korbinian Scharnagl、Anahit Pews‐Davtyan、Carsten Robert Kreyenschulte、Henrik Lund、Stephan Bartling、Ralf Jackstell、Matthias Beller
DOI:10.1002/chem.201806282
日期:2019.4.11
Hydroformylation of olefins has been studied in the presence of specific heterogeneous cobalt nanoparticles. The catalytic materials were prepared by pyrolysis of preformed cobalt complexes deposited onto different inorganic supports. Atomic absorption spectroscopy (AAS) measurements indicated a correlation of catalystactivity and cobalt leaching as well as a strong influence of the heterogeneous
There is presently provided organic compounds of formula I, n-type acceptor materials derived from such compounds and devices comprising such n-type acceptor materials.
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Hydroformylation of unsaturated esters and 2,3-dihydrofuran under solventless conditions at room temperature catalysed by rhodium <i>N</i>-pyrrolyl phosphine catalysts
作者:W. Alsalahi、A. M. Trzeciak
DOI:10.1039/c9nj04438h
日期:——
The introduction of chiral phosphines, BINAP or Ph-BPE, to this system resulted in the production of a branched aldehyde with enantioselectivity, ee, up to 44 and 81%, respectively. High activity combined with high enantioselectivity was achieved due to the formation of the mixed rhodium hydrides HRh(CO)[P(NC4H4)3](BINAP) and HRh(CO)[P(NC4H4)3](Ph-BPE), identified by the NMR method.
HRh(CO)L 3类型的铑配合物(其中L是N-吡咯基膦,例如P(NC 4 H 4)3,PPh(NC 4 H 4)2或PPh 2(NC 4 H 4) )用于反应性较低的不饱和底物,即乙酸烯丙酯,丙烯酸丁酯,丙烯酸甲酯,2,3-二氢呋喃和乙酸乙烯酯的加氢甲酰化。即使在室温下,这些催化剂也可以实现完全的底物转化和对相应醛的高化学选择性。用HRh(CO)[P(NC 4H 4)3 ] 3在25°C。在20巴合成气(H 2 / CO = 1)下,在80°C下,该反应的转换频率TOF增加至2000 mol mol -1 h -1。向该系统中引入手性膦,BINAP或Ph-BPE导致产生对映选择性ee最高为44%和81%的支链醛。由于形成了混合氢化铑HRh(CO)[P(NC 4 H 4)3 ](BINAP)和HRh(CO)[P(NC 4 H 4)3](Ph-BPE),通过NMR方法鉴定。
Selective hydroformylation of alkyl acrylates using [2,2′-bis(dipyrrolylphosphinooxy)-1,1′-(±)-binaphthyl]/Rh catalyst: reversal of regioselectivity
catalyst could give good conversion of ethyl acrylate (82.9%) in 12 h and exclusive branched aldehyde selectivity of >99.0%. More importantly, on elevating the temperature to 90 °C, this Rh system could preferentially afford the linear aldehyde with 96.1% regioselectivity, and the TOF could reach up to 9000 h−1. Deuterioformylation was conducted to explore the mechanism of regioselectivity reversal, and
本文研究了铑催化的具有不同PN N二膦配体的丙烯酸烷基酯的加氢甲酰化。在温和的条件下(合成气压力:2 MPa,20°C),2,2'-双(二吡咯基膦酰氧基)-1,1'-(±)-联萘基(L1)铑催化剂可产生良好的丙烯酸乙酯转化率(82.9% )在12小时内,专有的支链醛选择性> 99.0%。更重要的是,在将温度升至90°C时,该Rh系统可以优先提供具有96.1%区域选择性的线性醛,并且TOF可以达到9000 h -1。进行了氘代甲酰化以研究区域选择性逆转的机理,结果表明,可逆的氢化铑加成形成Rh-烷基物种可能在这种逆转中起重要作用。在升高的温度下,支链Rh-烷基物质的β-氢化物消除相对强于线性的Rh-烷基,这可能是因为L1由于其庞大而刚性的联萘骨架而在高温下可导致在分支的Rh-烷基物质中相对较大的空间排斥特征。继而,促进了线性Rh-烷基物质向线性醛的发展。