Cyan compounds

Fig. 8. Dye-release compounds used in Fuji instant films (a) yellow [96249-54-6], (b) magenta [73869-83-7], (c) cyan.

Cyan-verbindung, /. cyanogen compound, -verg tung,/. cyanogen poisoning, -wasser-stoff, m. hydrogen cyanide hydrocyanic acid. 

Oxy-aldehyd, n, hydroxy aldehyde, -ammo-niak, n, oxyammonia (hydroxylamine), -azoverbindung, /. hydroxyazo compound, -benzol, n, hydroxybenzene (phenol), -bem-steinsaure. /, hydroxysuccinic acid (malic acid). -biazol, n. oxadiazole, oxdiazole. -bitumen, n, oxidized bitumen, -carbon-s ure, /, hydroxycarboxylic acid, -chlnoltn, n. hydroxyquinoline, -clunon, n. hydroxy-quinone. -chlorid, n. oxychloride, -chlor-kupfer, n. copper oxychloride, -cyan, n. oxycyanogen. 

Zyan, n. cyanogen. For compounds see Cyan-, zygotisch, a. (Biol.) zygotic, zyklisch, a. cyclic. 

Fig. 3 The SAR by NMR approach. Example of a small bidentate molecule designed using this approach. The example shown is for the design of a potent inhibitors of the matrix metalloproteinase MMP3. (a) Docked structures of the identified fragment leads are shown with cyan carbons, whereas the linked compound is shown with green carbon atoms. All structures were experimentally determined by NMR. (b) Chemical structures (and in vitro potencies) of the fragment leads and subsequent high-affinity linked compounds. Adapted from [7]...

Fig. 19.9 Left nmrDraw-integrated display of the result of a Principal Component Analysis (PCA) for about 100 2D spectra. Numbers in yellow correspond to spectra in which a testing compound does not lead to shift changes of the protein. Numbers in cyan represent spectra whose PCA...

Scheme 3 Synthetic aspects of two conceptually different strategies for the introduction of piperazines via isocyanide based MCRs and two representative 3D conformations of 18A (blue) and 18B (cyan). An intramolecular hydrogen bond in compound 18B was shown in red dots...

Fig. 7 Stereopicture of the alignment of the key oxytocin amino acids Tyr2 and Ile3 (green sticks, PDB ID 1XY2) with the Ugi-DKP compound GSK-221149A (cyan sticks)...

Anthocyanins, in association with other compounds, such as flavones, are responsible for the colour of certain flowers. An anthocyanin found in rose petals is cyanin it can be isolated as its chloride. The corresponding anthocyanidin, cyan id in, exists as the pentahydroxy salt in acidic media, but as the pH increases it gives first a quinone and then an anion. Each of these forms has a different colour (see Scheme 5.1). 

The 1,3,5-triazines are amongst the oldest known organic molecules. Originally they were called the symmetric triazines, usually abbreviated to s- or sym- triazines. The numbering follows the usual convention of beginning at the heteroatom as shown for the parent compound 1,3,5-triazine (1). Rather non-systematic nomenclature is prevalent even in the current literature, because some of the compounds have been known for at least 150 years. The non-systematic names of some of the more important 1,3,5-triazines are listed in Table 1. The terms melamine, cyanuric acid and cyan uric chloride will be used throughout this chapter, and the term triazine will refer to 1,3,5-triazines only. In addition to the above names, 2,4,6-trialkoxy-l,3,5-triazines (2) are called cyanurates. Similarly, 1,3,5-trialkyl-1,3,5-triazines (3) are called isocyanurates. 

Moser, F.H. and A.L. Thomas Ph thaio cyan in e Compounds. Reinhbld Publishing... 

Fig. 11.4 PLS coefficient maps obtained using the water probe (a) and the methyl probe (b). Green and cyan fields are contoured at -0.003 and yellow and orange fields at +0.003 (compound 4j is shown for comparison).

Cyan, class I pharmacophore magenta, class II pharmacophore blue, sum of class I and class II green, maximum Tanimoto similarity to reference compounds in training set red, random black, ideal. The enrichment by the class II pharmacophore (magenta) at a yield of 50% is 10-fold better than by a random selection. 

Fig. 15.8 Activity brackets used for our pharmacophore models. Compounds used in the training set have colored bars red and light red for the most active set (constructive phase), yellow for moderately active molecules and cyan for the least active set (subtractive phase).

The more substituted radicals continue to be measurably the more nucleophilic. The relative rates with which the various alkyl radicals react with the 4-cyan-opyridinium cation (7.33, Y = CN) and the 4-methoxypyridinium cation (7.33, Y = OMe) are given in Table 7.2. The LUMO of the former will obviously be lower than that of the latter. The most selective radical is the ferf-butyl, which reacts 350000 times more rapidly with the cyano compound than with the methoxy. This is because the ferf-butyl radical has the highest-energy SOMO, which interacts (B in Fig. 7.4) very well with the LUMO of the 4-cyanopyridi-nium ion, and not nearly so well (A) with the LUMO of the 4-methoxypyridinium ion. At the other end of the scale, the methyl radical has the lowest-energy SOMO, and hence the difference between the interactions C and D in Fig. 7.4 is not so great as for the corresponding interactions (A and B) of the ferf-butyl radical. Therefore, it is the least selective radical, reacting only 50 times more rapidly with the cyano compound than with the methoxy. 

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