Fischer projections polysaccharides

L-(-F)-Arabinose is a naturally occurring L sugar. It is obtained by hydrolysis of the polysaccharide present in mesquite gum. Write a Fischer projection for L-(-F)-arabinose. 

Terms in bold are defined glycoconjugate 238 monosaccharide 238 oligosaccharide 238 disaccharide 238 polysaccharide 238 aldose 239 ketose 239 Fischer projection formulas 240 epimers 240... 

Fischer projection formulas, 973-974, 1007 furanose forms, 978-981, 1007 glycolysis, 1002-1004, 1015 glycoproteins, 995—996 glycosides, 988-991, 1008 Haworth formulas, 980 ketoses, 973, 986-987 mutarotation in, 985—986, 1008 photosynthesis, 976, 1015 polysaccharides, 993-995, 1008 pyranose forms, 981-984, 1007 reactions of... 

Carbohydrates are polyhydroxy aldehydes and ketones that are commonly known as sugars. A monosaccharide is a carbohydrate composed of one sugar unit and a disaccharide is a carbohydrate composed of two monosaccharide units. An oligosaccharide is composed of 2-10 monosaccharide units a polysaccharide is composed of 10 or more monosaccharide units. An aldose is a carbohydrate that contains an aldehyde unit and a ketose is a carbohydrate that contains a ketone unit. Monosaccharides are categorized by the total number of carbons in the structure triose, tetrose, pentose, hexose, etc. The d and 1 configurations of a monosaccharide are based on the Fischer projection of d-glyceraldehyde. A Fischer projection is an older representation of sugars. 

D sugar, 869 deoxy sugar, 883 disaccharide, 883 Fischer projection, 864 furanose, 874 glycoside, 877 ketose, 864 L sugar, 869 monosaccharide, 863 mutarotation, 874 polysaccharide, 886 pyranose, 873 reducing sugar, 880 simple sugar, 863 uronic acid, 881... 

Carbohydrates Chiral Molecules Fischer Projections of Monosaccharides Haworth Structures of Monosaccharides Chemical Properties of Monosaccharides Disaccharides Polysaccharides... 

Frequently it may be desirable to orient the ring in positions other than that shown in (IX), (X), and (XI). This may be particularly important when bulky groups are present or when linkages between two or more rings are to be represented as for the oligo- and polysaccharides. (Two of the possibilities are given later for each of the pentoses and hexoses, see p. 46.) Since the Haworth formulas are not projections of the Fischer type, they cannot be rotated in the plane of the paper. Reorientations must take place in space. 

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