Potent non-hydroxamate inhibitors of histone deacetylase-8: Role and scope of an isoindolin-2-yl linker with an α-amino amide as the zinc-binding unit
摘要:
A series of potent inhibitors of histone deacetylase-8 (HDAC8) is described that contains an a-amino amide zincbinding unit and a substituted isoindolinyl capping group. The presence of a 2,4-dichlorophenyl unit located in the acetate-release cavity was shown to confer a gain of approx. 4.3 kJ mol(-1) in binding energy compared to a phenyl group, and the isoindoline linker has approx. 5.8 kJ mol(-1) greater binding energy than the corresponding tetrahydroisoquinoline ring system. In a series of 5-substituted isoindolin-2-yl inhibitors, a 5-acetylamino derivative was found to be more potent than the 5-unsubstituted lead HDAC8 inhibitor (increase in binding energy of 2.0 kJ mol(-1), ascribed to additional binding interactions within the N-epsilon-acetyl-L-lysine binding tunnel in HDAC8, including hydrogen bonding to Asp101. Tolerance of a 5-substituent (capping group) on the isoindoline ring has been demonstrated, and which in some cases confers improved enzyme inhibition, the HDAC8 substrate-binding region providing a platform for additional interactions.
versatility of this new ligand was demonstrated with the synthesis of ruthenium(II) half-sandwich as well as octahedral ruthenium(II) and iridium(III) complexes. The regioselectivity of the C–H activation in the course of the cyclometalation can be influenced by the reaction conditions and the steric demand of the introduced metal complex fragment. The biological activity of this new class of metalated phthalimides
4-(吡啶-2-基)邻苯二甲酰亚胺的区域选择性环金属化被用于有机金属蛋白激酶抑制剂的经济设计。4-(吡啶-2-基)邻苯二甲酰亚胺可以从廉价的4-溴邻苯二甲酰亚胺通过三个步骤制备,包括一个Pd催化的Stille交叉偶联。这种新配体的多功能性通过钌 ( II ) 半夹心以及八面体钌 ( II ) 和铱 ( III )的合成得到了证明。) 复合体。环金属化过程中 C-H 活化的区域选择性会受到反应条件和引入的金属配合物片段的空间需求的影响。这种新型金属化邻苯二甲酰亚胺的生物活性是通过针对一大组人类蛋白激酶分析两个代表性成员来评估的。一种金属邻苯二甲酰亚胺与蛋白激酶 Pim1 的共晶结构证实了 ATP 竞争性结合与邻苯二甲酰亚胺部分和 ATP 结合位点铰链区之间的预期氢键。
Heterocyclic-substituted phenyl methanones
申请人:Jolidon Synese
公开号:US20060178381A1
公开(公告)日:2006-08-10
The present invention relates to compounds of formula I
wherein
R
1
,
R
2
, and are defined in the specification and to pharmaceutically acceptable acid addition salts thereof.
本发明涉及式I的化合物
其中
R
1
,
R
2
,并在规范中定义,并且其药学上可接受的酸盐。
Oxidation of aromatic and aliphatic triisopropylsilanylsulfanyls to sulfonyl chlorides: preparation of sulfonamides
A series of aromatic and aliphatic triisopropylsilanylsulfanyls were prepared and oxidized to the sulfonyl chlorides with KNO3/SO2Cl2. The sulfonyl chlorides were characterized via their conversion to sulfonamides.
制备了一系列芳族和脂族三异丙基硅烷基硫烷基,并用KNO 3 / SO 2 Cl 2氧化为磺酰氯。磺酰氯通过转化为磺酰胺来表征。
Access to Multisubstituted Furan-3-carbothioates via Cascade Annulation of α-Oxo Ketene Dithioacetals with Isoindoline-1,3-dione-Derived Propargyl Alcohols
作者:Li-Gang Bai、Ming-Tao Chen、Dong-Rong Xiao、Liu-Bin Zhao、Qun-Li Luo
DOI:10.1021/acs.joc.8b00401
日期:2018.8.3
A Brønsted acid-promoted, unprecedented formal (3 + 2) annulation strategy for the synthesis of multisubstituted furan-3-carbothioates is reported. This transformation represents the first regioselective annulation of α-oxo ketene dithio-acetals as 1,3-bis-nucleophiles in a cascade manner. The choice of isoindoline-1,3-dione-derived propargyl alcohols is crucial to the uncommon annulation mode between
Palladium-Catalyzed One-Step Synthesis of Isoindole-1,3-diones by Carbonylative Cyclization of <i>o</i>-Halobenzoates and Primary Amines
作者:Shilpa A. Worlikar、Richard C. Larock
DOI:10.1021/jo800936h
日期:2008.9.19
The palladium-catalyzed aminocarbonylation of o-halobenzoates produces 2-substituted isoindole-1,3-diones in good yields. This methodology provides a good one-step approach to this important class of heterocycles and tolerates a variety of functional groups, including methoxy, alcohol, ketone, and nitro groups.