Fischer projection: Difference between revisions
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The Fischer projection is a two-dimensional representation of a linear monosaccharide showing the stereochemistry. The figure below shows - from left to right - (a) glucose in a relaxed conformation, (b) glucose in a conformation where the carbon chain is in an all-syn conformation, (c) | The Fischer projection is a two-dimensional representation of a linear monosaccharide showing the stereochemistry. The figure below shows - from left to right - (a) a wedge-and-dashes representation of glucose in a relaxed conformation, (b) glucose in a conformation where the carbon chain is in an all-syn conformation, (c) with the carbon chain on the vertical axis and (d) the Fischer projection. This insightful series of images is from https://commons.wikimedia.org/wiki/File:Fischer_projection_-_projection_of_D-glucose.png | ||
[[Image:Fischer projection - projection of D-glucose.png| | [[Image:Fischer projection - projection of D-glucose.png|800px]] | ||
<Structure load='' size='350' frame='true' align='right' caption='Insert caption here' scene='85/856021/ | <Structure load='' size='350' frame='true' align='right' caption='Insert caption here' scene='85/856021/Overall/1' /> | ||
The 3D image shows glucose in the all-syn conformation. You can rationalize the Fischer projection by centering on each carbon atom, keeping carbon 1 (the aldehyde function) on top and the carbon chain curved backwards. | |||
The coordinates of glucose are from https://sites.science.oregonstate.edu/~gablek/CH334/Chapter5/fischer.htm. | The coordinates of glucose are from https://sites.science.oregonstate.edu/~gablek/CH334/Chapter5/fischer.htm. | ||
<jmol> | <jmol> | ||
<jmolLink> | <jmolLink> | ||
<script> moveto 1.0 { 511 -545 664 171.11} 133.56 0.0 0.0 {-0.43 -1.4969999999999999 -0.31} 4.711404157531831 {0 0 0} 0 0 0 3.0 0.0 0.0; | <script> set zshade on; set zshadepower 2; moveto 1.0 { 511 -545 664 171.11} 133.56 0.0 0.0 {-0.43 -1.4969999999999999 -0.31} 4.711404157531831 {0 0 0} 0 0 0 3.0 0.0 0.0; | ||
</script> | </script> | ||
<text>carbon 1 (not chiral)</text> | <text>carbon 1 (not chiral)</text> | ||
Latest revision as of 17:18, 21 July 2020
The Fischer projection is a two-dimensional representation of a linear monosaccharide showing the stereochemistry. The figure below shows - from left to right - (a) a wedge-and-dashes representation of glucose in a relaxed conformation, (b) glucose in a conformation where the carbon chain is in an all-syn conformation, (c) with the carbon chain on the vertical axis and (d) the Fischer projection. This insightful series of images is from https://commons.wikimedia.org/wiki/File:Fischer_projection_-_projection_of_D-glucose.png
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The 3D image shows glucose in the all-syn conformation. You can rationalize the Fischer projection by centering on each carbon atom, keeping carbon 1 (the aldehyde function) on top and the carbon chain curved backwards. The coordinates of glucose are from https://sites.science.oregonstate.edu/~gablek/CH334/Chapter5/fischer.htm.
