• Nem Talált Eredményt

acylglycosyl halides, 383 epoxides, hydrogenolysis, 393

769, 773 other pathways,

O- acylglycosyl halides, 383 epoxides, hydrogenolysis, 393

Lobry de Bruyn-Alberda van Eksnstein transformation, 60-2

mechanism, 61 Loco weed, 270 Lucerne, see Alfalfa Lupeose, see Stachyose Lupinus lutens, 519 L-Lyxoflavin, 425 L-Lyxose, 24

5-deoxy-3-C-formyl, 558 nucleoside-like compounds, 425

M

MacDonald-Fischer degradation, 121 Macrocystis pyrifera, 687

Madagascar manna, 251 Madder, 551

glycosides, 552 Madder root, 512

Magnesium oxide, catalytic hydrolysis of nucleic acids, 425

Main's "pot method", reducing sugars, L-Malic acid, 311 615

photochemical production, 748 Malic enzyme, 748

Maltase, see a-Glucosidase, yeast Maltobionic acid, 499

Maltose, 498 absorption, 783

conversion to isomaltose, 534 identification, 498

nutritional aspects, 784 occurrence, 498 preparation, 499 properties, 498

structure, 499

aldobionic acid method, 499 anomeric configuration, 500 methylation method, 499

Maltotetraose and higher oligosaccha-rides, 514

Maltotriose, 513 identification, 514 occurrence, 514 properties, 513 structure, 514

"Maltulose", from glycogen, 715 Malvus species, 500

Mammary tissue enzymes, 497 Manna,

Douglas fir, 516 larch, 516 Virginia pine, 516 Manna ash, 249 Mannans, 669

salep, 670

vegetable ivory, 669 D-Mannaric acid, 313

2,5-anhydro, 379 Mandelonitrile,

amygdalin, 550 prunasin, 551 sambunigrin, 551

Manneotetrose, see Stachyose Manninositose, 272

Manninotriose, 514 from stachyose, 519 identification, 515 occurrence, 515 preparation, 515 properties, 515 structure, 515 D-Mannitol, 249

1,4-anhydro, 385 1,5-anhydro, 382

l,4:3,6-dianhydro, 164, 385

conversion to dichlorodideoxy com-pound, 396

2,5-O-methylene, 390 l,5:3,6-dianhydro, 385 borates, 263

boric acid, effect on acidity, 263 1-deoxy-l-p-toluino, 422 1-O-a-D-galactopyranosyl, 501 nutritional aspects, 796

occurrence, 249 synthesis, 249 DL-Mannitol, 250

synthesis, total, 250 L-Mannitol, 250

D-Mannofuranuronic 3,6-lactone, 324 Ό-manno -Heptulose, 101

hexa-O-acetyl-a, 81 hydrazones, 81

nutritional aspects, 796 occurrence, 101 preparation, 101 utilization, 101

D-Mannoketoheptose, see D-mawno-Hep-tulose

L-Mannomethylose, see L-Mannose, 6-deoxy

D-Mannonic acid, 2,5-anhydro, 379 1,4-lactone, 250 D-Mannopyranoside,

ethyl l-thio-jS, 201 methyl,

a, ethanethiolysis, 201 ß, ethanethiolysis, 201

2,3:4,6-di-0-isopropylidene, 237 D-Mannose, 94

configuration, 20 occurrence, 94

nutritional aspects, 788 preparation, 94 synthesis, total, 103 utilization, 95 D-Mannose derivatives,

3,4,6-tri-O-acetyl-0, l,2(methyl ortho-acetate), 196

2-amino-2-deoxy, 380, 469 2,5-anhydro, 378, 468

1,6-anhydro-0-D-mannopyranose, 221 calcium chloride, 95

2,3:5,6-dicarbonate, 159

4-0-/3-D-galactopyranosyl, 484, 497 6-O-a-D-galactopyranosyl, see

Meli-biose hydrazones, 80

2,3:5,6-di-0-isopropylidene, 237 D-mannofuranosyl chloride,

2,3:5,6-dicarbonate, 159 4-0-/3-D-mannopyranosyl, 511 sî/m-D-mannosylguanosine

5'-pyro-phosphoric acid, 95

D-mannosylstreptomycin, 558 6-diphenylphosphate,

2,3,4-tri-0-acetyl-a, 184 1-phosphate, 174 1,6-diphosphate, 184 D-Mannoside,

D-glyceric acid, naturally occurring, 554

L-Mannose, 6-deoxy, (L-rhamnose) 100 4-O-D-glucopyranosyl, 511

hydrazones, 81 3-O-methyl, 552 nutritional aspects, 796 occurrence, 100 phenylosazone, 81 preparation, 100 quercitrin, 539 a-Mannosidase,

alfalfa emulsin, 577, 590 bottom yeast, 593 coffee emulsin, 590 Mannosylstreptomycin, 558 D-Mannuronan, alginic acid, 687

Mannurone, see D-Mannofuranuronic 3,6-lactone

Maple sap, 502

Matezodambose, see D-Inositol Medicago sativa, 590

Meerwein-Pondorff reaction, 292 Melampyrum nemorosum, 252 Melanoidin reaction, 406, 446

mechanism, 447 Melezitose, 515

identification, 516 nutritional aspects, 795 occurrence, 516 preparation, 516 properties, 516 structure, 516 turanose, 508

Melibiase, see a-Galactosidase, bottom yeast

Melibiitol, 501 Melibiose, 500

from raffinose, 517 identification, 500 nutritional aspects, 796 occurrence, 500 preparation, 500 properties, 500 structure, 500

aldobionic acid method, 500 methylation method, 500 synthesis, 483, 501

Koenigs-Knorr, 501 Melitriose, see Raffinose Melibiulose, see Planteobiose Menadione, 757

Mercaptals, see Thioacetals and indi-vidual sugars

Mereaptans, see Thiols and individual compounds

Mercaptolysis, 201 structure studies, 202 Mercerization, cellulose, 663 Mercuric acetate,

Koenigs-Knorr synthesis, a-anomers, 483

oligosaccharides, synthesis, 483 Mercuric oxide,

2-amino-2-deoxyaldoses, oxidation, 472 meso Compounds, 11

Mesothelioma polysaccharide, 712 Mesoxaldehyde bis (phenylhydrazone),

623

Mesquite gum, 83, 88

Mesylates, see Methanesulfonates Metachromasia, 626, 631-3

abolition by ''methylation", 632 effect of polymerization, 632

induction in neutral polysaccharides, Metasaccharinic acid, 68 632

degradation, 87

2-deoxy-2-er2/iÄro-pentose, 87 Methacrylic anhydride, 163 Methanesulfonates, 163

replacement, secondary, 172 Methose, 103

Methoxyformates, 158 O-Methylation,

alkyl iodide-silver oxide method, 370 alkyl iodide-sodium alkoxide method,

370

determination of glycoside structure, 31

diazomethane, 371

dimethylsulfate method, 369 of

acids (esterification), 632 disaccharides, 487

glycosides, 212 polysaccharides, 653

branch-unit assay, 651 end-group assay, 651

estimation of hydroxyl groups, 648

nature of glycosidic linkages, 653 resistant hydroxyl groups, 696 partial, 370

thallous alkoxide method, 371 Methyl chloroformate, 158 O-Methyl determination, 650

Méthylène blue, reducing sugar test, 608 Méthylène derivatives, see also

indi-vidual compounds, 232 acetolysis, 232

formation, 232 rules, 231 structure, 232 Methyl ethers,

degradation, oxidative, 214 distillation, 602

Methylfurfural, see 2-Furaldehyde, 5-methyl

Michaelis constant, 565 Michael synthesis, 190, 197

Microorganisms, identification, 622 Mildew, 664

Milk sugar, see Lactose Mistletoe berries, 271

Molar frictional coefficient, 657 Molecular weight determination,

poly-mers, 655

osmotic pressure method, 656 sedimentation equilibrium procedure,

657

sedimentation velocity procedure, 656 viscometric method, 694

Molisch test, 607

Molybdic acid, molybdates, complexes, 262

effect on rotation, 259 Monilia yeast, 86

Monosaccharides, see also Aldoses, Ketoses, Sugars, and individual compounds, 2

aldehydo,

penta-O-acetyl, mutarotation, 145 Schiff's reaction, 144

biosynthesis, 758-62

branched chain, naturally occurring, 78

classification, 4

configuration, 24-5 use of alditols, 258 identification, 602, 652, 713 interconversion, biochemical, 775 keto, Schiff's reaction, 144

naturally occurring, 80 structure, 258

Mountain ash berry, 98, 132 Mucic acid, see Galactaric acid Mucicarmine stain, 635

Mucihematein stain, 635 Mucin, 711

funis, 723 gastric, 724

isolation, 724 polysaccharides, 725 histochemistry, 627

Alcian Blue 8GS, 634 dialyzed iron, binding, 633 salivary, 726

composition, 727 isolation, 726 synovial fluid, 723 Mucoids,

blood serum, 725 composition, 725 ovomucoid, 728 urinary, 726

composition, 726 Mucoitin sulfates, 712 Mucoproteins, 722-9

proteins, nature, 724 Mucosin, 717

Mucus, 711 Mushrooms, 425

Mushroom sugar, see Trehalose Mustard seed emulsin, 600 Mutarotase, 50

Mutarotation, 29, 49-57

penta-O-acetyl -aldehydo-hexoses, 145 activation energies, 52

coefficients, 52 complex, 51 effect of pH, 55 enzymic catalysis, 50 equations, 50, 52

generalized acid-base catalysis, 55 D-glucose, 53

N-glycosylamines, 420 kinetics, 55-7

lactones, 306 oligosaccharides, 488

oximes, 463

phenylhydrazones, 454 phenylosazones, 459 L-ribose, 53 D-talose, 53 Mycarose, 78 Mycodextrans, 706 Mycose, see Trehalose My rosin, 555

Myrtillin, 88

Mytilitol, see sq//Zo-Inositol, methyl M y Ulis edilis, 278

N Nataloin, 83

Naphthoresorcinol test, D-gluconic acid, 2-keto, 327 uronic acids, 318

Naringin, 100 Nebularine, 425

Neisseria meningitidis, phosphorylase, 527

Neisseria perflava, amylosucrase, 705 D-Neogalactide, see D-Galactitol,

l,5:3,6-dianhydro Neokestose, 532

Neolactose, see D-Altrose, 4-Ο-β-Ώ-galactosyl

Neomannide, see D-Mannitol, 1,5:3,6-dianhydro

Neomycin, 297

Neosorbide, see D-Glucitol, 1,5:3,6-dianhydro

Nervone, 560 Neuberg ester, 181

Neuraminic acid, see also Sialic acid, 475

gangliosides, 560 Neurospora crassa, 471

pectinase, 672

Niacin, see Nicotinic acid Nickel, see Raney nickel Nicotinamide, 418 ,437,745

JV- (tetra-O-acetyl-D-glucosyl), 1,2-dihydro, 418

1,6-dihydro, 418

Nicotinic acid, requirement in fructose metabolism, 787

Nigeran, 706 Nitrates, 168

O-acylglycosyl nitrates, 169

decomposition mechanism, 170 instability, 169

polysaccharides, 693 denitration, 693 preparation, 169

primary, replacement of halogen or sulfonate, 169

reductive denitration, 170 reductive hydrolysis, 165 saponification, 170

Nitric acid oxidation, see also Nitrogen dioxide,

methylated saccharides, 212-214, 353 polyols, 246, 290

saccharides, 313, 353 products, 354

vanadium pentoxide catalysis, 353 C-Nitroalcohols, see also Nitromethane

synthesis, 131

2-deoxyaldose preparation, 131 Nitroethanol synthesis, see also

Nitro-methane synthesis, 111 preparation of,

D-grfo/co-heptulose, 111 D-manno-heptulose, 101, 111 Nitrogen dioxide oxidation, 354

mechanism, 355 polysaccharides, 699 specificity, 354

Nitromethane synthesis (Sowden-Fischer), 109

for lengthening carbon chain, 109 preparation of,

O-erythro-L-manno-octose, 110 L-glucose, 110

L-gulose, 110

heptoses from D-mannose, 110 L-mannose, 110

C-nitrodeoxyinositols, 110*

separation of epimers, 109

Nitrophenols, reducing sugar tests, 608 Nitrous acid,

anhydro derivatives, formation, 378 deamination, 378

mechanism, 380 Nomenclature,

D- and L, 21

selection of reference group, 23 higher carbon sugars, 44-9 oligosaccharides, 480 Nonitols, 257

Notatin, 366

Nucleic acids, see also Ribonucleic acids, Deoxyribonucleic acids, 84,441-6 genetic implications, 445

histochemistry, 635 hydrolysis, 441

catalysts, 425 isolation, 441 occurrence, 441 structure, 442 Nucleoproteins, 635 Nucleosides, 424

diphosphoric acids, 435, 437 triphosphoric acids, 435, 437 phosphorylated, see Nucleotides preparation, 425

separation, 426 structure, 426

anomeric configuration, 428 point of attachment, sugar to base,

428

sugar-ring size, 427 synthesis, 429

enzymic, 426 Nucleotides, 430, 746

acid-labile phosphate, 432 acid-stable phosphate, 432

diphosphopyridine (DPN), 437, 745 triphosphopyridine (TPN), 438, 745 related substances,

B-group vitamins, 437 coenzymes, 437 structure, 431 preparation, 430 separation, 430, 431 Nylon, 666