Lecture13-14-Ch7-Oct8-10-2007

Lecture13-14-Ch7-Oct8-10-2007 - could be either or anomer...

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aldehyde ketone
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Are all stereoisomers also enantiomers (=mirror images) ? This is a projection!==>The locations of the groups indicates stereochemistry
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D-aldoses These are Fisher projection formulas, so they indicate stereochemistry!
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D-ketoses
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+ +
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pyranoses furanoses Is this an aldofuranose or a ketofuranose? Is this an aldopyranose or a ketopyranose?
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Hexose derivatives - many important in cell walls
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Fehling’s test for reducing sugars  - used for measuring blood glucose levels in diabetes -  now replaced by enzymatic assay: (2nd reaction detects H 2 O 2  w/ color change) Only reacts in linear form
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fo rm a tio n o f a n O - glycosidic bond, resulting in a disaccharide
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Unformatted text preview: could be either or anomer Which end is the reducing end ? C o m m o n dis a c c ha ride s a m ylo s e : b ra nc h po ints in a m lyo pe c tin & g lyc o g e n: Why do e s the c e ll g o thro ug h the tro ub le o f s to ring s ug a rs a s po lym e rs ? Am ylo s e c o ils up into he lic e s : c e llulo s e - s tra ig ht fib e rs , e xte ns ive ly s ta b ilize d b y H-b o nds chitin { N-acetyl group Blood Antigens on Serum Can get Can give Genotype type erythrocytes antibodies blood from blood to OO O None Anti-A, Anti-B O O,A,B,AB AA or AO A A Anti-B O,A A,AB BB or BO B B Anti-A O,B B,AB AB AB A and B None O,A,B,AB AB...
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This note was uploaded on 12/02/2009 for the course CH 53890 taught by Professor Raymonds during the Spring '09 term at University of Texas at Austin.

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Lecture13-14-Ch7-Oct8-10-2007 - could be either or anomer...

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