ORGANOGEL BASED ON MOLECULES DERIVED FROM 7,7'-DIAZAISOINDIGO
申请人:CONSEJO SUPERIOR DE INVESTIGACIONES CIENTÍFICAS (CSIC)
公开号:US20190233410A1
公开(公告)日:2019-08-01
The invention relates to: a compound derived from 7,7′-diazaisoindigo; an organogel, formed by these compounds, having an aggregation-induced emission (AIE) in the red region of the visible spectrum (600-800 nm); and a xerogel produced by drying said organogel. Due to these properties, said organogel or xerogel can be applied to optoelectronic devices or fluorescent sensors.
Synthesis and Antiproliferative Activity of 7-Azaindirubin-3′-oxime, a 7-Aza Isostere of the Natural Indirubin Pharmacophore
作者:Marina Kritsanida、Prokopios Magiatis、Alexios-Leandros Skaltsounis、Youyi Peng、Peng Li、Lawrence P. Wennogle
DOI:10.1021/np9003905
日期:2009.12.28
The bis-indole alkaloid indirubin and its analogues bear a very interesting natural pharmacophore. They are recognized mainly as kinase inhibitors, but several other activities make them possible candidates for preclinical studies. Based on the previously reported activity of 7-bromoindirubin-3'-oxime and its derivatives, the synthesis of indirubins bearing a heterocyclic nitrogen atom at position 7 was carried out. Herein, we report the first synthesis of 7-azaindirubin-3'-oxime (12) as well as its antiproliferative activity against 57 cancer cell lines and its inhibitory activity against a series of kinases. 7-Azaindirubin (10) and its 3'-oxime derivative (12) showed reduced activity as kinase inhibitors in comparison with other known indirubin derivatives, but antiproliferative activity with a best GI(50) value of 0.77 mu M.
COS-triggered oxygen/sulfur exchange of isatins: chemoselective synthesis of functionalized isoindigos and spirothiopyrans <i>via</i> self-condensation and the thio-Diels–Alder reaction
作者:Wei Chen、Hui Zhou、Bai-Hao Ren、Wei-Min Ren、Xiao-Bing Lu
DOI:10.1039/d1ob02157e
日期:——
organocatalytic oxygen/sulfur atom exchangereaction (O/S ER) of isatins by employing carbonyl sulfide (COS) as a novel sulfuring reagent under mild reaction conditions. 8-Diazabicyclo[5.4.0]undec-7-ene (DBU) exhibited excellent activity in this approach. Remarkably, the chemical transformations of in situ generated 3-thioisatins can be tuned via the judicious choice of reaction solvents in a one pot
在此,我们采用羰基硫(COS)作为新型硫化试剂,在温和的反应条件下,首次展示了靛红的有机催化氧/硫原子交换反应(O/S ER)。8-Diazabicyclo[5.4.0]undec-7-ene (DBU) 在这种方法中表现出优异的活性。值得注意的是,原位生成的 3-硫代靛红的化学转化可以通过在一锅法中明智地选择反应溶剂来调节,从而能够通过自缩合过程在 CH 3 CN中选择性形成官能化异靛蓝,或者在 DMSO 中选择性形成螺噻喃在共轭二烯存在下,通过硫代-狄尔斯-阿尔德反应。用实验和密度泛函理论方法进行的机理研究表明,靛红和 COS 之间的 O/S ER 导致形成 3-硫代靛红作为关键中间体,其进一步经历溶剂控制的转化,分别生成异靛蓝或螺硫吡喃。易于访问的基板和操作简单性使该过程适合进一步探索。这种转化的实用性通过基于异靛蓝的药物分子和供体-受体共轭聚合物的克级合成得到证明。