Hydroxy occurrence

Saxitoxin occurrence, 5, 604 Saxitoxiri, hydroxy-occurrence, 5, 604 Scholtz synthesis indolizines, 4, 466 Scillaren A occurrence, 3, 883 Scutellarein chemistry, 3, 697 Secobarbital, 3, 150 1,19-Secocorrin nomenclature, 1, 30 A/D-Secocorrin complexes cyclization, 4, 429 A/D-Secocorrin, Al8-dehydro-synthesis, 4, 429 A/D-Secocorrin, 1-oxo-synthesis, 4, 429 Secocorrins... 

Coumarin, 7-amino-7-(diethylamino)-, I, 333 Coumarin, 7-amino-4-methyl-fluorescence spectra, 3, 601 Coumarin, 7-amino-3-phenyl-brightening agents, I, 339 Coumarin, 4-aryl-occurrence, 3, 677 synthesis, 3, 810 Coumarin, 3-arylazo-4-hydroxy-structure, 3, 643 Coumarin, 3-bromo-reactions... 

Dicoumarol — see Coumarin, 3,3 -methylenebis(4-hydroxy-Dictamnine biosynthesis, 4, 992 occurrence, 4, 989 pharmacology, 4, 992 synthesis, 4, 990 Dicyanocobyrinic acid heptamethyl ester, 4, 422 Dicycloalkaselenophenes synthesis, 4, 968 Dicyclohexa-1,4-diselenins thermolysis, 4, 968 Dieckmann condensation chroman-3-one synthesis by, 3, 854 isochroman-4-one synthesis by, 3, 859 oxoindolizidine synthesis by, 4, 471... 

Indolizidine, 6-(3-furyl)-8-methyI-occurrence, 4, 477 Indolizidine, hydroxy-basicity, 4, 461... 

Isocoumarin, 3,4-dihydro- — see Isochroman-l-one Isocoumarin, 8-hydroxy-3-methyI-occurrence, 3, 677 Isocoumarin, 8-methoxy-3-methyI-reactions... 

Isotubaic acid — see Benzofuran-5-carboxylic acid, 4-hydroxy-2-isopropyl-Isouramil occurrence, 3, 144 5-Isoxalones potentiometry, 6, 11 Isoxanthopterin, 6-acetonyl-structure, 3, 276 Isoxanthopterin, 3,8-dimethyl-rearrangements, 3, 309 Isoxanthopterin, 6-methoxy-3,8-dimethyl-synthesis, 3, 297 Isoxanthopterin, 6-methyl-bromination, 3, 301 Isoxanthopterin, 8-methyl-synthesis, 3, 319 Isoxanthopterin, 6-phenacyl-structure, 3, 276... 

Kojic acid — see also Pyran-4-one, 5-hydroxy-2-hydroxymethyl-, 3, 611 acylation, 3, 697 application, 3, 880 occurrence, 3, 692 reactions, 3, 714, 715 with amines, 3, 700 with phenylhydrazine, 3, 700 synthesis, 3, 810 Kokusagine occurrence, 4, 989 Kokusaginine occurrence, 4, 989 synthesis, 4, 990 Koopmans theorem, 2, 135 Kostanecki-Robinson reaction chromone and coumarin formation in, 3, 819-821 mechanism, 3, 820 flavones, 3, 819... 

Pyrazolo-5-carboxamide, 4-hydroxy-3-/3-D-ribofuranosyl-occurrence, 5, 303 Pyrazolodiazepines synthesis, 5, 321... 

Saccharin, 2-methyl-reduction, 6, 152 Saccharin, 6-nitro-reduction, 6, 154 Saccharin, thio-hydrolysis, 6, 161 methylation, 6, 160 Safranines applications, 3, 196 Safrole derivatives toxicity, 1, 139-140 occurrence, 6, 781 Safrole, 1-hydroxy-toxicity, 1, 140 Salazosulfapyridine... 

Thiazole, 2-( D-galactopentaacetoxypentyl)-4-methyl-synthesis, 6, 295 Thiazole, 2-hydrazi nosynthesis, 6, 297 Thiazole, 2-hydroxy-reactions, 6, 285-286 synthesis, 6, 298, 299 tautomerism, 5, 99 6, 247, 269 Thiazole, 4-hydroxy-reactions, 5, 101 6, 287-288 synthesis, 6, 303 tautomerism, 6, 248, 269 Thiazole, 2-hydroxybenzyl-biosynthesis, 1, 96 Thiazole, 2-hydroxy-4-methyl-arylation, 6, 256 Thiazole, 2-iodo-photolysis, 6, 244 Thiazole, 2-isobutyl-occurrence, 6, 327... 

Xanthine, 8-ethyl-synthesis, 5, 574 Xanthine, 9-hydroxy-8-methyl-synthesis, S, 596 Xanthine, 1-methyl-deuterium-hydrogen exchange, S, 527 methylation, S, 533 occurrence, S, 598 reduction, 5, 541 synthesis, S, 589 Xanthine, 3-methyl-deuterium-hydrogen exchange, S, 528 methylation, S, 533 reduction, S, 541 synthesis, S, 595 Xanthine, 7-methyl-deuterium-hydrogen exchange alkylation, S, 527 reduction, S, 541 synthesis, S, 587 Xanthine, 8-methyl-synthesis, S, 574 Xanthine, 9-methyl-methylation, S, 533 nitration, 5, 538... 

Both the infrared and ultraviolet spectra of pyrrolidine-2,3,5-triones (75) have been interpreted to support their existence as hydroxy-maleimides (76), and the occurrence of a strong OH stretching band in the infrared spectrum of 4-phenylpyrrolidine-2,3,5-trione has been taken as evidence that it too exists in a hydroxy form, probably 76 (R CeHg). However, the trioxo formulation is suggested by t/j the infrared spectra of jV-substituted pyrrolidine-2,3,5-triones, although an equilibrium apparently occurs depending upon the substituents and conditions. The zwitterion formulation 77 has been advanced for 4-aminopyrrolidine-2,3,5-trione. For chemical evidence... 

Rule 1 Select the longest carbon chain containing the hydroxy) group, and derive the parent name by replacing the -e ending of the corresponding alkane with -ol. The -c is deleted to prevent the occurrence of two adjacent vowels propanol rather than propaneol, for example. 

Acyl groups are common in bacterial polysaccharides. The parent acids are fatty acids, hydroxy acids, and amino acids. The simplest acid, formic acid, has only been found as the amide. The occurrence of O-formyl groups had been reported, but proved to be incorrect. A-Formyl groups have been found in different polysaccharides for example, in the 0-specific side-chains of the LPS from Yersinia enlerocolitica 0 9, which are composed of 4,6-dideoxy-4-formamido-D-mannopyranosyl residues. The formyl group can assume two main conformations, s-cis (41) and s-trans (42), which are... 

A rearrangement (NIH shift) occurred during the transformation of 2-chlorobiphenyl to 2-hydroxy-3-chlorobiphenyl by a methanotroph, and is consistent with the formation of an intermediate arene oxide (Adriaens 1994). The occurrence of such intermediates also offers plausible mechanisms for the formation of nitro-containing metabolites that have been observed in the degradation of 4-chlo-robiphenyl in the presence of nitrate (Sylvestre et al. 1982). 

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