Ammo sugars

Another structural variation is the replacement of a hydroxyl group m a carbohydrate by an ammo group to give an ammo sugar The most abundant ammo sugar is one of the oldest and most abundant organic compounds on earth N Acetyl d glucosamine is the... 

Sections Structurally modified carbohydrates include deoxy sugars, ammo sugars,... 

BAER FISCHER Ammo sugar synthesis 10 BAEYER Oxindolesynthesis It BAEYER Oiarylmethane synthesis 11 BAEYER Pyridine synthesis 12 BAEYER - DREWSON Indoxyt synthesis 12 BAEYER VILLIGER Ketone oxidation 13 BAEYER - VILLIGER Tntylation 13 BAKER - VENKATARAMAN Flavone synthesis t4... 

E. Meinjohanns, M. Meldal, H. Paulsen, and K. Bock, Dithiasuccinoyl (Dts) amino-protecting group used in syntheses of 1,2-trans-ammo sugar glycosides, J. Chem. Soc., Perkin Trans., 1 (1995) 405-415. 

The lower members of the homologous series of 1. Alcohols 2. Aldehydes 3. Ketones 4. Acids 5. Esters 6. Phenols 7. Anhydrides 8. Amines 9. Nitriles 10. Polyhydroxy phenols 1. Polybasic acids and hydro-oxy acids. 2. Glycols, poly-hydric alcohols, polyhydroxy aldehydes and ketones (sugars) 3. Some amides, ammo acids, di-and polyamino compounds, amino alcohols 4. Sulphonic acids 5. Sulphinic acids 6. Salts 1. Acids 2. Phenols 3. Imides 4. Some primary and secondary nitro compounds oximes 5. Mercaptans and thiophenols 6. Sulphonic acids, sulphinic acids, sulphuric acids, and sul-phonamides 7. Some diketones and (3-keto esters 1. Primary amines 2. Secondary aliphatic and aryl-alkyl amines 3. Aliphatic and some aryl-alkyl tertiary amines 4. Hydrazines 1. Unsaturated hydrocarbons 2. Some poly-alkylated aromatic hydrocarbons 3. Alcohols 4. Aldehydes 5. Ketones 6. Esters 7. Anhydrides 8. Ethers and acetals 9. Lactones 10. Acyl halides 1. Saturated aliphatic hydrocarbons Cyclic paraffin hydrocarbons 3. Aromatic hydrocarbons 4. Halogen derivatives of 1, 2 and 3 5. Diaryl ethers 1. Nitro compounds (tertiary) 2. Amides and derivatives of aldehydes and ketones 3. Nitriles 4. Negatively substituted amines 5. Nitroso, azo, hy-drazo, and other intermediate reduction products of nitro com-pounds 6. Sulphones, sul-phonamides of secondary amines, sulphides, sulphates and other Sulphur compounds... 

Scheme 8). Treatment of a variety of 3-ammo-3-deoxy sugars with ethanethiol leads not only to diethyl dithioacetals, but also to varying amounts of thioglycoside products... 

Treatment of some mesylated N,N-diallylamino sugars with triethylamine tnhydrofluoride results m the fluorination and regioselective transfer of the mtro gen atom to give, after platinum-catalyzed reductive deallylation, 2,3-ammo-fluorodeoxysugars A mechanism involving aziridimum ions has been proposed [44] (equation 32)... 

From To — Akanes CycJoaikanes Akenes Akynes Aryls Halogen compounds Alcohols Phenols Ethers, Quinones B, 5 and Si compounds P and BI compounds Nttro. Nitroso, Azo. Azoxy, Hydrazo Azides Amines Organometahic compounds Adehydes Ketones Acids. AnHyd rides. Esters Amides, Amidines. Nitriles Hydroxy-aldehydes or -ketones. Sugars. Hydroxy acids Ammo acids. Peptides Heterocycles Nucleosides Miscellaneous, including heterocycles... 

The hammerhead ribozyme is a small RNA that catalyzes specific RNA cleavage in the sugar-phosphate backbone. The function of this RNA strongly relies on Mg placement to maintain structural integrity. Aminoglycoside action in inhibition of hammerhead ribozyme function has been shown to involve displacement of these necessary Mg ions. Structural studies of the hammerhead ribozyme bound by neomycin have indicated that the charged ammo-... 

FIGURE 7.3 Structures of ammo polyhedron (a) boron anion, (b) carboranyl anion, (c) dual-chain nido-carborane, and (d) sugar-derived carborane for liposome encapsulation. 

The possibility that carbohydrate-ammonia reactions may participate in non-biological processes of humus formation under natural soil conditions received much attention during the period 1950-1960. Unlike the Mai Hard or "browning reaction, in which melanoidin pigments are formed in mixtures of sugars ana ammo acias in acidic media the ammonia reaction was... 

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