Leveraging the Pre-DFG Residue Thr-406 To Obtain High Kinase Selectivity in an Aminopyrazole-Type PAK1 Inhibitor Series
摘要:
To increase kinase selectivity in an aminopyrazole-based PAK1 inhibitor series, analogues were designed to interact with the PAKI deep-front pocket pre-DFG residue Thr-406, a residue that is hydrophobic in most kinases. This goal was achieved by installing lactam head groups to the aminopyrazole hinge binding moiety. The corresponding analogues represent the most kinase selective ATP-competitive Group I PAK inhibitors described to date. Hydrogen bonding with the Thr-406 side chain was demonstrated by X-ray crystallography, and inhibitory activities, particularly against kinases with hydrophobic pre-DFG residues, were mitigated. Leveraging hydrogen bonding side chain interactions with polar pre-DFG residues is unprecedented, and similar strategies should be applicable to other appropriate kinases.
Fe(III) Complex Compounds For The Treatment And Prophylaxis Of Iron Deficiency Symptoms And Iron Deficiency Anemias
申请人:Bark Thomas
公开号:US20130109662A1
公开(公告)日:2013-05-02
The invention relates to iron(III) complex compounds and pharmaceutical compositions comprising them for the use as medicaments, in particular for the treatment and/or prophylaxis of iron deficiency symptoms and iron deficiency anemias.
Aerobic α-hydroxylation of β-keto esters and amides by co-catalysis of SmI3 and I2 under mild base-free conditions
作者:Shun-Ming Yu、Kai Cui、Fei Lv、Zhen-Yu Yang、Zhu-Jun Yao
DOI:10.1016/j.tetlet.2016.05.052
日期:2016.6
A clean base-free α-hydroxylation of β-keto esters and amides has been developed, in which air was used as the oxygen source and SmI3 and I2 were applied as the catalysts, affording the corresponding α-hydroxylated 1,3-dicarbonyl products in good to excellent yields undermildconditions. Mechanism discussion shows that both oxygen atoms of dioxygen are utilized and incorporated into the product through
combination of o-iodoxybenzoic acid (IBX) and a catalytic amount of iodine is found to promote a facile one-pot deacylative sulfonylation reaction of 1,3-dicarbonylcompounds with sodium sulfinates to yield β-carbonyl sulfones. The present method provides the target products bearing a wide variety of functional groups in one step and in good yields. A combination of o-iodoxybenzoic acid (IBX) and a catalytic
Chiral Primary Amine Catalyzed Asymmetric α-Benzylation with In Situ Generated<i>ortho</i>-Quinone Methides
作者:Yunbo Zhu、Wen-Zhao Zhang、Long Zhang、Sanzhong Luo
DOI:10.1002/chem.201605302
日期:2017.1.26
A dual activation strategy integrating primary amine catalysis and Lewis base activation has been developed for an asymmetric α‐benzylation reaction. Enamines derived from β‐ketocarbonyls could react effectively with in situ generated ortho‐quinone methides under Lewis base activation in asymmetric α‐benzylation of β‐ketocarbonyls and α‐branched aldehydes. The approach enables the creation of acyclic
2-Aminobenzimidazole Organocatalyzed Asymmetric Amination of Cyclic 1,3-Dicarbonyl Compounds
作者:Alejandro Baeza、Paz Trillo、Melania Gómez-Martínez、Diego Alonso
DOI:10.1055/s-0034-1379494
日期:——
The use of a trans-cyclohexanediamine benzimidazole derivative as a hydrogen-bond catalyst for the electrophilic amination of cyclic 1,3-dicarbonylcompounds is herein presented. High yields and enantioselectivities varying from moderate to excellent are generally obtained using mild reaction conditions and as low as 1 mol% of catalyst loading.