Steps 5 and 6 combined are best described as which of the following?1. A reduction followed by reoxidation at C32. Two keto-enol tautomerizations that lead to stereochemical inversion at C33. An elimination followed by addition that leads to stereochemical retention at C44. Dehydration followed by hydration that leads to stereochemical retention at C4 Fucose, one of several monosaccharides found in thesurface polysaccharides of animal cell membranes,is synthesized biochemically from mannose in thefollowing eight steps.СНО-H-CH,OHCH,OHH,CHНо-H.Но--H-ОН НО,CH3ОН НООН НОНООН НОYouHHHO-ČH,OHMannoseСНОHHHНоH-HCH,НоHНОOHCH3НоVÓHHOHНОH-HO-НОНОHНо-HČH3Fucose

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Fucose, one of several monosaccharides found in the surface polysaccharides of animal cell membranes, is synthesized biochemically from mannose in the following eight steps. СНО -H- CH,OH CH,OH H,C H Но- H. Но- -H- ОН НО, CH3 ОН НО ОН НО НО ОН НО You H H HO- ČH,OH Mannose СНО H H H Но H- H CH, Но H НО OH CH3 Но VÓH HO H НО H- HO- НО НО H Но- H ČH3 Fucose

Fucose, one of several monosaccharides found in the surface polysaccharides of animal cell membranes, is synthesized biochemically from mannose in the following eight steps. СНО -H- CH,OH CH,OH H,C H Но- H. Но- -H- ОН НО, CH3 ОН НО ОН НО НО ОН НО You H H HO- ČH,OH Mannose СНО H H H Но H- H CH, Но H НО OH CH3 Но VÓH HO H НО H- HO- НО НО H Но- H ČH3 Fucose

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter25: Biomolecules: Carbohydrates

Section25.6: Reactions Of Monosaccharides

Problem 17P

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