Artificial metalloenzymes derived from bovine β-lactoglobulin for the asymmetric transfer hydrogenation of an aryl ketone – synthesis, characterization and catalytic activity
作者:Alice Chevalley、Mickael V. Cherrier、Juan C. Fontecilla-Camps、Mahsa Ghasemi、Michèle Salmain
DOI:10.1039/c3dt53253d
日期:——
unsaturated fatty acid derivatives. Eventually, the ability of the protein hybrids to catalyse the transferhydrogenation of TFACP was demonstrated. Good-to-quantitative conversions in the corresponding alcohol were reached within 72 h with the rhodium(III) hybrids and the best enantioselectivities (up to 32% ee for the (R)-enantiomer) were measured with the Rh(III) cofactors derivedfrom palmitic and stearic
Methods for Treating Cognitive Disorders Using Inhibitors of Histone Deacetylase
申请人:Forum Pharmaceuticals, Inc.
公开号:US20170000749A1
公开(公告)日:2017-01-05
This disclosure relates to compounds for the inhibition of histone deacetylase and treatment of a cognitive disorder or deficit. More particularly, the disclosure provides for compounds of formula (I)
wherein
Q, J, L and Z are as defined in the specification.
iron(IV)-oxo complex, [Fe(2PyN2Q)(O)]2+ was directed for hydrogen atom abstraction (HAA) from aliphatic substrates and the iron(II)-halide [FeII(2PyN2Q)(X)]+ (X, halogen) was exploited in conjunction to deliver the halogen atom to the ensuing carbon centered radical. Despite iron(IV)-oxo being an effective promoter of hydroxylation of aliphatic substrates, the perfect interplay of HAA and halogen atom
非血红素铁基卤化酶通过铁 ( IV )-氧代卤化物活性物质促进 sp 3 -C–H 键的选择性卤化。在卤化过程中,酶系统中可以完全防止竞争性羟基化。然而,合成铁( IV )-氧代-卤化物中间体通常会产生卤化和羟基化产物的混合物。在本报告中,我们开发了一种新的合成策略,采用非血红素铁基配合物通过超越羟基化进行选择性 sp 3 -C–H 卤化。室温稳定的铁( IV )-氧配合物 [Fe(2PyN2Q)(O)] 2+用于从脂肪族底物和铁( II )-卤化物 [Fe II (2PyN2Q) 中夺取氢原子 (HAA) (X)] + (X,卤素) 结合使用将卤素原子传递给随后的碳中心基团。尽管铁( IV )-氧代是脂肪族底物羟基化的有效促进剂,但本研究中HAA和卤素原子转移的完美相互作用导致通过改变羟基化途径选择性地产生卤化产物。实验研究概述了铁( IV )-氧介导的卤化反应的机制细节。PhCH 3和
A Practical Total Synthesis of Hapalosin, a 12-Membered Cyclic Depsipeptide with Multidrug Resistance-Reversing Activity, by Employing Improved Segment Coupling and Macrolactonization
作者:Claudio Palomo、Mikel Oiarbide、Jesús M. García、Alberto González、Raquel Pazos、José M. Odriozola、Patricia Bañuelos、Mónica Tello、Anthony Linden
DOI:10.1021/jo0497499
日期:2004.6.1
A practical total synthesis of hapalosin, a compound with multidrug resistance-reversing activity, has been carried out using an unprecedented macrolactonization strategy. One of the features of the new approach is the straightforward and fully stereocontrolled access to the key γ-amino β-hydroxy carboxylic acid subunit via an efficient acetate aldol addition reaction with N-methyl α-aminoaldehydes