b) CHON D-Clucose e Ave c) -H CHO -OH D-Glucaric H- H- -OH HO- HO- -H H- -OH EtO HN CH₂OH AC OEt 1. EtONa, EtOH 2. PhCH₂Br 3. H₂OT, A H- CHO -OH -H -OH SCH₂OH
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- CH3 +. CH3COCR O H20 AICO3 () HFDraw the products formed when cholesterol is treated with each reagent. Indicate the stereochemistry around anystereogenic centers in the product.a. CH3COCIb. H2, Pd-Cc. PCCd. leic acid, H+e. [1] BH3 ·THF; [2] H2O2, -OHWhich compounds shown below are meso-compounds? F A B D O 1. Compounds B and C. O2. Compounds C and D. O 3. Compounds A and D. O 4. Compounds A and B.
- (d) Draw the structure of the expected product when monosaccharide B undergo mutarotation upon dissolving in water in the presence of Tollens reagent (AGNO3, NHẠOH). он OH O. OH OH OH monosaccharide B2. The following diagram shows the straight-chain structure of an N-acetyl aminoheptose that is found in certain plants including avocado (Persea Americana). CHOH CH2OH CH,OH O: O: HO- но -HO- HO H но -HO- H- NHAC NHAC ACHN OH HN H- HO- HO CH2OH CHOH CH20H HO HO. Structure B Structure C Structure A OH OH CHOH CH2OH CH OH HO H HO H HO- H OH HO- HO H- -NHAC ACHN- ACHN HO- H OH HO ČHOH CH2OH CH2OH Structure D Structure E Structure F Which of the Fischer projections (A-F) matches the skeletal formula shown? Structure A Structure B Structure C Structure D Structure E O Structure F (1 mark) 王 HI8. Draw Haworth projection structures for the a- anomer for these Fischer projections ÇHO CHO но- -H- H- HO- CH HO H -HO- HO- H- HO- H OH CH2OH CH2OH (D)-altrose (D)-glucose HHH
- Convert each cyclic monosaccharide into its acyclic form. CH,OH он, H. OH OH но O. OH HOCH, OH а. с. но- OH CH2OH он OH ОН OH OH CH2OH b. OH d. HO f. Но H. OH OH Но Но Но Он OH5) Draw the following sugars in BOTH the alpha and beta pyranose form: C-H Но H- Но C-H HO H- НО H- ОН H- ОН А. CH2OH H- ОН H- ОН CH2OH CH2OH C=0 НО H- H- ОН H Но- CH2OH 'CH,OH c=0 НО- H. H- ОН H- OH CH2OHDraw the product formed when each compound reacts with NADH (or NADPH, L Problem 13.8) in the presence of an enzyme. Each reaction occurs during the biosynthesis of an amino acid, a monosaccharide, or a lipid. do H. a. NH3 B-aspartate semialdehyde b.O,PO OPO,2- OH 1,3-bisphosphoglycerate о но C. O H. mevaldehyde
- Draw the Haworth projection formula for the given monosaccharides 1. CHO H- -OH Но- -H- HO H H- -O- CH,OH CH2OH C=0 HO H H OH H. OH ČH2OH 3. CHO H OH H- OH H -OH ČHOH 2.18-82 Identify each of the following Haworth projection formulas as an a-D-monosaccharide or a B-D-monosaccharide. ÇH,OH b. ÇH;OH a. OH Но OH ÓH ÓH ÓH с. CH,OH d. HOCH2 CH;OH OH HỎ OH OH ÓH ÓH 18-83 Draw thnim This carbohydrate is a(n) CHO HO- H HO- -H HO- -H HO- -H CH₂OH a) aldotetrose b) ketohexose c) aldohexose d) ketotetrose e) aldopentose