Effects of Structural and Electronic Characteristics of Chalcones on the Activation of Peroxisome Proliferator-Activated Receptor Gamma
作者:Jason Taylor Schott、Charles Edward Mordaunt、Anthony Joseph Vargas、Martin Antonio Leon、Kevin Hsinwen Chen、Mandeep Singh、Mikiko Satoh、Emilio Leal Cardenas、Santanu Maitra、Nilay Vinod Patel、Hubrecht Johan Peter de Lijser
DOI:10.1248/cpb.c12-00749
日期:——
chalcones with an electron rich group or sterically large groups such as naphthyl on the carbonyl side tend to activate PPARγ. The absence of any strict structural or electronic requirements suggests that the flexibility of the PPARγ ligand binding pocket may allow binding of diverse chalcones with some preference for a slightly larger electron-rich group on the carbonyl side. We predict that further structure-activity
Studies of NMR Chemical Shifts of Chalcone Derivatives of Five‐membered Monoheterocycles and Determination of Aromaticity Indices
作者:Eun Jeong Jeong、In‐Sook Han Lee
DOI:10.1002/bkcs.11749
日期:2019.7
(E)‐1‐heteroaryl‐3‐arylpropen‐1‐ones. The 13C chemicalshift values (δC) of the chalcone derivatives were determined in order to find if they correlated with the Hammett σ values. A good correlation, especially for the β‐C for both series, was found for the 13C chemicalshift values (δC) of the chalcone derivatives with the Hammett σ values. The chemicalshift values of the β‐C of the heterocyclic compounds
Isothiourea-catalysed enantioselective pyrrolizine synthesis: synthetic and computational studies
作者:Daniel G. Stark、Patrick Williamson、Emma R. Gayner、Stefania F. Musolino、Ryan W. F. Kerr、James E. Taylor、Alexandra M. Z. Slawin、Timothy J. C. O'Riordan、Stuart A. Macgregor、Andrew D. Smith
DOI:10.1039/c6ob01557c
日期:——
The catalytic enantioselective synthesis of a range of cis-pyrrolizine carboxylate derivatives with outstanding stereocontrol (14 examples, >95 : 5 dr, >98 : 2 er) through an isothiourea-catalyzed intramolecular Michael addition-lactonisation and ring-opening approach from the corresponding enone acid is reported. An optimised and straightforward three-step synthetic route to the enone acid starting
通过异硫脲催化的分子内迈克尔加成-内酯化和开环方法,催化对映选择性合成一系列具有出色立体控制性的顺式吡咯嗪羧酸盐衍生物(14个实例,>95 : 5 dr,>98 : 2 er )据报道烯酮酸。描述了一种从容易获得的吡咯-2-甲醛中制备烯酮酸起始材料的优化且简单的三步合成路线,其中苯并四咪唑(5 mol%)被证明是对映选择性过程的最佳催化剂。用MeOH或一系列胺对吡咯嗪二氢吡喃酮产物进行开环,以优异的收率和对映选择性获得所需的产物。计算已被用来探索导致高立体控制的因素,所观察到的顺式立体异构体的形成预计在动力学和热力学上是有利的。
Synthesis and biological evaluation of aromatic enones related to curcumin
作者:Thomas Philip Robinson、Richard B. Hubbard、Tedman J. Ehlers、Jack L. Arbiser、David J. Goldsmith、J. Phillip Bowen
DOI:10.1016/j.bmc.2005.03.054
日期:2005.6
It has been specifically shown to be an effective inhibitor of angiogenesis both in vitro and in vivo. Using curcumin as a lead compound for anti-angiogenic analog design, a series of structurally related compounds utilizing a substituted chalcone backbone have been synthesized and tested via an established SVR cell proliferation assay. The results have yielded a wide range of compounds that equal or
A boron–nitrogen transborylation enabled, borane-catalysed reductive cyanation of enones
作者:Kieran Benn、Kieran Nicholson、Thomas Langer、Stephen P. Thomas
DOI:10.1039/d1cc03649a
日期:——
introduction of a nitrile group into organic molecules and an orthogonal route for the installation of a wide array of functional groups using simple transformations. Cyanation methods are dominated by transition metal catalysis and the use of hydrogen cyanide gas. Here, the electrophilic cyanation of enones was achieved using a main-group catalyst and a non-toxic, electrophilic cyanide source. This protocol
氰化提供了一种将腈基引入有机分子的简单方法,以及使用简单转化安装各种官能团的正交途径。氰化方法主要是过渡金属催化和使用氰化氢气体。在这里,烯酮的亲电氰化是使用主基催化剂和无毒的亲电氰化物源实现的。该协议适用于广泛的底物范围,包括那些含有可还原官能团的底物。机理研究表明,氨基硼烷中间体经过 B-N 转移(B -N / B- H 交换)以实现催化转化。