The catalytic dearomatization of pyridines, accessing medicinally relevant N-heterocycles, is of high interest. Currently direct, dearomative strategies rely generally on reduction or nucleophilic addition, thus limiting the architecture of the dearomatized products to a six-membered ring. We herein introduce a catalytic, dearomative cycloaddition reaction with pyridines using photoinduced energy transfer
A series of N-nitro acid amide derivatives compounds were synthesized based on the active site of target acetohydroxyacid synthase (AHAS, EC: 2.2.1.6) enzyme. All the structures of newly prepared compounds were thoroughly characterized by satisfied IR and 1H NMR spectra. The IC50 values against AHAS enzyme and EC50 values for herbicidal activity against Amaranthus mangostanus L. and Sorghum sudanense
基于目标乙酰羟酸合成酶(AHAS,EC:2.2.1.6)的活性位点合成了一系列N-硝基酰胺衍生物化合物。新制备的化合物的所有结构都通过满意的 IR 和 1H NMR 光谱进行了彻底表征。测定了所有合成目标化合物对AHAS酶的IC50值和对芒果苋和苏丹高粱的除草活性的EC50值。化合物II-10、II-21和II-22的IC50值为7.09mg/L、9.07mg/L和9.11mg/L,化合物II-8和II-22的EC50值为9.87mg/L L 和 19.88 mg/L 分别对 Amaranthus mangostanus L. 和 Sorghum sudanense 的根进行了说明。同时,通过分子对接预测分析了化合物活性较低的可能原因。
Synthesis of Heterocyclic Baicalein Derivatives
作者:Ki-Jun Hwang、Kwang-Jin Cho、Beom-Tae Kim
DOI:10.5012/bkcs.2013.34.5.1325
日期:2013.5.20
envisioned that the expansion of chemical synthesis of Baicaleinderivatives containing a heterocyclic ring is highly warranted. Since a bioisosterism is a lead modification approach to attenuate toxicity and/or improve the biological properties of the compounds, we decided to substitute the benzene moiety of 2-position of Baicalein 4 by a heterocyclic ring such as thiophene or furan to test their biological
efficient approach for the synthesis of fluorescent 2,3-naphthalimide derivatives has been developed from readily available starting materials via an intramolecular didehydro-Diels–Alder reaction, which proceeded well under room temperature, exhibiting a wide substrate scope and good functional group tolerance. The practicability of this methodology has been verified by one-step synthesis of the environmentally
Organic metal compound and organic light-emitting device
申请人:INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
公开号:US20200024294A1
公开(公告)日:2020-01-23
Organic metal compounds and organic light-emitting devices employing the same are provided. The organic metal compound has a chemical structure of Formula (I) or Formula (II):
In particular, one of the following two conditions (1) and (2) is met:
(
1
) R
1
is deuterium or C
1-6
deuterated alkyl group, when R
3
and R
4
are independently hydrogen, halogen, C
1-6
alkyl group, C
1-6
fluoroalkyl or C
3-12
heteroaryl group; and
(2) R
1
is hydrogen, deuterium, C
1-6
alkyl group, C
1-6
deuterated alkyl group, C
3-12
heteroaryl group, or C
6-12
aryl group, when at least one of R
3
and R
4
is C
6-12
aryl group or C
6-12
fluoroaryl group.