Conformation of cyclic compound( viewed by Fisher and Haworth projections withChair conformations)2 conformers of cyclohex...
The 2 orientations of substituents in the CHAIR forms:a) Equitorial = bonds that project outside along the plane of a ring...
CONVERTING FISCHER PROJECTIONS OF “D”MONOSACCHARIDES INTO HAWORTH STRUCTURES 1. The hemiacetal carbon is the carbon where ...
Drawing Haworth Projections of D-aldohexoses                              D-galactose                                     ...
Drawing Haworth Projections of D-aldopentoses
Drawing Haworth Projections of D-ketohexoses
Conformation cyclic cpds
Conformation cyclic cpds
Conformation cyclic cpds
Conformation cyclic cpds
Conformation cyclic cpds
Conformation cyclic cpds
Conformation cyclic cpds
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Conformation cyclic cpds

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Conformation cyclic cpds

  1. 1. Conformation of cyclic compound( viewed by Fisher and Haworth projections withChair conformations)2 conformers of cyclohexane: boat and chair (more stable)
  2. 2. The 2 orientations of substituents in the CHAIR forms:a) Equitorial = bonds that project outside along the plane of a ringb) Axial = bonds that project above and below the plane or perpendicularto the plane Note: equatorial bonds are more stable than axial due to less steric hindrance - the more bulky groups on the equatorial, the more stable
  3. 3. CONVERTING FISCHER PROJECTIONS OF “D”MONOSACCHARIDES INTO HAWORTH STRUCTURES 1. The hemiacetal carbon is the carbon where the C=O found 2. All of the atoms on the right in Fischer are pointed down in the Haworth structure. 3. All of the atoms on the left in Fischer are pointed up in the Haworth structure. 4. The CH2OH (the carbon-#6 in D-glucose) is pointed up in the Haworth structure 5. The OH attached to carbon-#5 (box around it) becomes part of the ring. 6. The linear Fischer projection becomes a cyclic hemiacetal in the Haworth structure. 7. The hemiacetal Carbon-1 “*” is the anomeric carbon in the Haworth
  4. 4. Drawing Haworth Projections of D-aldohexoses D-galactose D-glucose
  5. 5. Drawing Haworth Projections of D-aldopentoses
  6. 6. Drawing Haworth Projections of D-ketohexoses

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