(I) [RIs an alkyl group having a fluorine atom or an aryl group having a fluorine atom on the ring, ring A is a monocyclic aromatic ring containing 1 to 3 ring-constituting nitrogen atoms or a polycyclic aromatic ring containing the aromatic ring as a partial structure An aromatic ring]....
Second, the heteroaromatics that contain elements such as oxygen/nitrogen/sulphur connected to the aromatic ring (Type II) are also an important part, which contributes to the aromatic structure (Tromp and Moulijn, 1988; Wender, 1976). Benzofuran, phenol, anisole are some examples which fall ...
ring which has 1 to 3 nitrogen atoms being bonded via the nitrogen atom therein to the 4-position of the pyrimidine ring of the formula (I), or a fused biheterocyclic ring constructed with 5- or 6-membered aromatic or non- ... Y Sakuma,M Hasegawa,K Kataoka,... 被引量: 17发表: ...
Heterocyclic aromatic compounds contain one or more rings with delocalised π-electrons along with at least one of the carbon atoms replaced by any heteroatom such as sulphur, oxygen, nitrogen etc. From:Dyes and Pigments,2023 About this page ...
Aromatic nitrogen-containig 6-membered cyclic comp 优质文献 相似文献 参考文献 引证文献Nitrogen-containing 6-membered ring derivative and pharmaceutical composition containing them A compound expressed by formula (I) (in the formula: Z is C(R) or N; Z is CH or N; Z is C(R) or N, and ...
Studies the structural dependence of aromatic ring stacking and related weak interactions in ternary amino acid-copper(II) complexes and its biological implication. Establishment of aromatic ring stacking and aromatic nitrogen ligand; Comparisons of the stabilization of the complexes due to stacking and ...
生物化学 Chapter+23+Aromatic+Nitrogen+Compounds Chapter23 AromaticNitrogenCompounds §23.1Nitroarenes NO2 Nitro-benzene 23.1.1StructureofNitrobenzene sp2 ONO147pm121pm127 Ar ONO极限式ONO共振式 NO2 ONO离域式ONO 23.1.2Preparationof Nitrobenzene Wehavealreadyseenmanyexamplesofthepreparationofaromaticnitro...
C. Synthesis and characterization of P2N3−: an aromatic ion composed of phosphorus and nitrogen. Science 348, 1001–1004 (2015). Article ADS CAS PubMed Google Scholar Peeks, M. D., Claridge, T. D. W. & Anderson, H. L. Aromatic and antiaromatic ring currents in a molecular nano...
porphyrins, sapphyrin and orangarin, using our theory of aromaticity and ring-current diamagnetism and confirmed that, as in the case of free-base porphine, global aromaticity and macrocyclic circulation are associated primarily with five pyrrolic rings and the macrocyclic annulenoid pathway, ...
CTP synthase catalyses the ATP-dependent formation of CTP from UTP using either NH(3) or L-glutamine as the nitrogen source. GTP is required as an allosteric effector to promote glutamine hydrolysis. In an attempt to identify nucleotide-binding sites, scanning alanine mutagenesis was conducted on...