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An --biphenyl moiety-incorporated 32π hexaphyrin(188.8.131.52.1.1) is successfully achieved. Replacing with connectivity in the biphenyl unit of hexaphyrin leads to the formation of its structural isomer, octaphyrin(184.108.40.206.220.127.116.11). Spectral and structural analyses reveal the lack of planarity in hexaphyrin and the presence of an -arene unit in octaphyrin, thus affording nonaromatic characteristics.
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Name: Organic letters
A series of σ‒π conjugated polymers composed of biphenyl and X atom as backbone repeat unit (where X is the IV-A group atom: carbon, silicon, germanium or tin) grafted with two alkoxy-substituted ...
Density functional theory (DFT) has been applied to understand the influence of various linkages on the energetic properties and stability of the polynitro-biphenyl compounds. Structures were optimize...
The ligand-unsupported accommodation of extra metal moieties in a sandwich complex is reported. Although it has been considered that the metal-capacity of a metal sheet sandwich complex is strictly li...
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A structurally-related family of small proteins that form a stable tertiary fold pattern which is supported by a series of disulfide bonds. The arrangement of disulfide bonds between the CYSTEINE moieties results in a knotted structure which is unique to this family of proteins.
Biphenyl compounds substituted in any position by one or more amino groups. Permitted are any substituents except fused rings.
Biphenyl compounds which are extensively brominated. Many of these compounds are toxic environmental pollutants.
Whitish aromatic crystalline organic compounds made up of two conjoined BENZENE rings.
(GTP cyclohydrolase I) or GTP 7,8-8,9-dihydrolase (pyrophosphate-forming) (GTP cyclohydrolase II). An enzyme group that hydrolyzes the imidazole ring of GTP, releasing carbon-8 as formate. Two C-N bonds are hydrolyzed and the pentase unit is isomerized. This is the first step in the synthesis of folic acid from GTP. EC 18.104.22.168 (GTP cyclohydrolase I) and EC 22.214.171.124 (GTP cyclohydrolase II).