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- https://chem.libretexts.org/Workbench/Pick_Your_Poison%3A_Introduction_to_Materials_Toxicology/24%3A_Biomolecules_-_Carbohydrates/24.05%3A_Configurations_of_AldosesThis section covers the stereochemical configurations of aldoses, a type of sugar that contain an aldehyde group and are classified based on the number of carbon atoms. The stereochemistry of these su...This section covers the stereochemical configurations of aldoses, a type of sugar that contain an aldehyde group and are classified based on the number of carbon atoms. The stereochemistry of these sugars is represented using Fischer projections, with D and L configurations indicating the orientation of the hydroxyl group on the chiral carbon furthest from the aldehyde. Understanding these configurations helps in studying the structural and functional properties of carbohydrates.
- https://chem.libretexts.org/Courses/Smith_College/Organic_Chemistry_(LibreTexts)/25%3A_Biomolecules-_Carbohydrates/25.05%3A_Configurations_of_AldosesThe L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH goi...The L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH going to the right on the chiral center furthest away from the carbonyl. Next rotate the model so that the H and OH of the chiral carbon just below the carbonyl are facing towards you. When converting bonds from going into the page to going out of the page the orientation of the H and OH are reversed.
- https://chem.libretexts.org/Courses/can/CHEM_232_-_Organic_Chemistry_II_(Puenzo)/11%3A_Biomolecules-_Carbohydrates/11.05%3A_Configurations_of_AldosesThe L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH goi...The L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH going to the right on the chiral center furthest away from the carbonyl. Next rotate the model so that the H and OH of the chiral carbon just below the carbonyl are facing towards you. When converting bonds from going into the page to going out of the page the orientation of the H and OH are reversed.
- https://chem.libretexts.org/Ancillary_Materials/Reference/Organic_Chemistry_Glossary/Absolute_ConfigurationThe absolute configuration at a chiral center in a molecule is a time-independent and unambiguous symbolic description of the spatial arrangement of ligands around it.
- https://chem.libretexts.org/Courses/Providence_College/Organic_Chemistry_I/07%3A_Stereochemistry/7.03%3A_Absolute_ConfigurationSince the atomic p orbital lies above and below the plane of the trigonal planar carbon, there is equal chance of attack of the nucleophile from the top or bottom face. Compounds that arrange the subs...Since the atomic p orbital lies above and below the plane of the trigonal planar carbon, there is equal chance of attack of the nucleophile from the top or bottom face. Compounds that arrange the substituent groups in the same way as (+)-glyceraldehyde are given the designation D, while compounds that arrange the substituent groups in the same way as (–)-glyceraldehyde are given the designation L.
- https://chem.libretexts.org/Courses/Martin_Luther_College/Organic_Chemistry_-_MLC/05%3A_Biomolecules/5.01%3A_Biomolecules-_Carbohydrates/5.1.05%3A_Configurations_of_AldosesThe L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH goi...The L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH going to the right on the chiral center furthest away from the carbonyl. Next rotate the model so that the H and OH of the chiral carbon just below the carbonyl are facing towards you. When converting bonds from going into the page to going out of the page the orientation of the H and OH are reversed.
- https://chem.libretexts.org/Workbench/LCDS_Organic_Chemistry_OER_Textbook_-_Todd_Trout/25%3A_Biomolecules-_Carbohydrates/25.05%3A_Configurations_of_AldosesEach of the two D aldotetroses then leads to two D aldopentoses (four total), and each of the four D aldopentoses leads to two D aldohexoses (eight total). Similarly, the –OH groups at C3 alternate tw...Each of the two D aldotetroses then leads to two D aldopentoses (four total), and each of the four D aldopentoses leads to two D aldohexoses (eight total). Similarly, the –OH groups at C3 alternate two right/two left (2R/2L), the –OH groups at C4 alternate 4R/4L, and the –OH groups at C5 are to the right in all eight (8R). The Fischer projection of a monosaccharide is drawn vertically, with the carbonyl group at or near the top and the –CH 2 OH group at the bottom.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_III_(Morsch_et_al.)/25%3A_Carbohydrates/25.04%3A_Configurations_of_AldosesThe L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH goi...The L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH going to the right on the chiral center furthest away from the carbonyl. Next rotate the model so that the H and OH of the chiral carbon just below the carbonyl are facing towards you. When converting bonds from going into the page to going out of the page the orientation of the H and OH are reversed.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(OpenStax)/25%3A_Biomolecules_-_Carbohydrates/25.04%3A_Configurations_of_AldosesThis section covers the stereochemical configurations of aldoses, a type of sugar that contain an aldehyde group and are classified based on the number of carbon atoms. The stereochemistry of these su...This section covers the stereochemical configurations of aldoses, a type of sugar that contain an aldehyde group and are classified based on the number of carbon atoms. The stereochemistry of these sugars is represented using Fischer projections, with D and L configurations indicating the orientation of the hydroxyl group on the chiral carbon furthest from the aldehyde. Understanding these configurations helps in studying the structural and functional properties of carbohydrates.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(Morsch_et_al.)/25%3A_Biomolecules-_Carbohydrates/25.04%3A_Configurations_of_AldosesThe L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH goi...The L-aldose versions can be draw by inverting all of the chiral centers in the D-aldose's Fischer projection as discussed in the previous section. Note that in both cases the D sugars have the OH going to the right on the chiral center furthest away from the carbonyl. Next rotate the model so that the H and OH of the chiral carbon just below the carbonyl are facing towards you. When converting bonds from going into the page to going out of the page the orientation of the H and OH are reversed.
