[EN] PHENYLALKANOIC ACID AND PHENYLOXYALKANOIC ACID DERIVATIVES AS HPPAR ACTIVATORS [FR] ACIDE PHENYLALKANOIQUE ET DERIVES D'ACIDE PHENYLOXYALKANOIQUE EN TANT QU'ACTIVATEURS DE HPPAR
The present invention provides compounds that are inducers or inhibitors of apoptosis or apoptosis preceded by cell-cycle arrest. In addition, the present invention provides pharmaceutical compositions and methods for treating mammals with leukemia or other forms of cancer or for treating disease conditions caused by apoptosis of cells.
containing quaternary carbon centres via aminative and azidative oxidative dearomatization of phenols. The same protocol has also been successfully employed to achieve oxidativeperoxidation of phenols. The simplest metal free reaction conditions delineate an easy breakthrough to the “Trio”- oxidative amination, azidation and peroxidation. An array of diverse polyfunctionalised heterocycles has been synthesized
Dirigent Proteins Guide Asymmetric Heterocoupling for the Synthesis of Complex Natural Product Analogues
作者:Stacie S. Kim、Elizabeth S. Sattely
DOI:10.1021/jacs.0c13164
日期:2021.4.7
Phenylpropanoids are a class of abundant buildingblocks found in plants and derivedfrom phenylalanine and tyrosine. Phenylpropanoid polymerization leads to the second most abundant biopolymer lignin while stereo- and site-selective coupling generates an array of lignan natural products with potent biological activity, including the topoisomerase inhibitor and chemotherapeutic etoposide. A key step
Phenylpropanoids 是一类在植物中发现的丰富的结构单元,来源于苯丙氨酸和酪氨酸。苯丙烷聚合产生第二丰富的生物聚合物木质素,而立体和位点选择性偶联产生一系列具有强生物活性的木脂素天然产物,包括拓扑异构酶抑制剂和化疗药物依托泊苷。依托泊苷生物合成的一个关键步骤涉及一种植物指示蛋白,该蛋白促进松柏醇(一种常见的苯丙素)选择性二聚化,形成 (+)-松脂醇,一种关键的 C 2对称通路中间体。尽管这种偶联反应具有优雅和快速组装依托泊苷支架的能力,但尚未利用定向蛋白来生成其他复杂的木脂素天然产物。在这里,我们证明了来自鬼臼属植物的致敏蛋白与漆酶结合可以引导异源天然和合成松柏醇类似物的偶联,用于松脂醇类似物的对映选择性合成。这种复杂性产生的途径非常直接和有效:三个新键和四个立体中心在一个步骤中由两种不同的非手性单体产生。我们预计我们的结果将使难以获得的非天然木脂素类似物和依托泊苷衍生物的生物
Ruthenium(VIII)-Catalyzed <i>ipso</i>-Dearomative Spiro-Etherification and Spiro-Amidation of Phenols
作者:Debayan Sarkar、Nilendri Rout
DOI:10.1021/acs.orglett.9b01322
日期:2019.6.7
An open air ruthenium(VIII)-catalyzed oxidative spiro-etherification as well as spiro-amidation of phenols has been performed. The transformation works satisfactorily with both phenols and naphthols and thus exhibits a wide range of flexibility. The catalysis is performed in open air at room temperature with a yield of ≤95%.