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Question 10 0.5 pts Below is the structure of fructose, which numbered carbon is the anomeric...
Below is the structure of fructose, which numbered carbon is the anomeric carbon? CH2OH H О, НО ОН 5 2 H 31 CH2OH H OH O O O O o
Question 8 0.5 pts Below is the structure of fructose, is it D-or L-fructose AND which numbered carbon determines this? CH2OH 0 HO -H H- OH НЕОН CH2OH L-fructose; #5 carbon O L-fructose; #2 carbon D-fructose; #5 carbon D-fructose; #4 carbon O L-fructose; #4 carbon
5 a) identify the anomeric carbon in the below molecule b) identify the thpe of ring pyranose or furanose c) identify if it is a or b 6 a) identify the anomeric carbon in the below molecule b) identify the thpe of ring pyranose or furanose c) identify if it is a or b 7 The structure of 6-carbon ketose sugar is shown. Draw the common cyclic structure of this structure (both a and b form) 8 Identify the relationship...
is the following sugar an aldose or ketose? why? what carbon is its anomeric carbon? is this sugar d or l? which structure (a-d) describes its beta- anomer? Н CH OH CH2OH CH OH -оон CH2OH ОН о ОН ₂ ООН ОН ОН ОН HO-31 ОН ОН ОН ОН ОН Нота-Н -Н НА-ОН Н -ОН 6CHOH ОН ОН ОН ОН A в D
12. Circle each anomeric carbon in the sugars below. (2 points) Which of the sugars below is a reducing sugar? (1 point) Which sugar contains a glycosidic linkage? (1 point) CH-OH носно он н и носн,он они нон glucose fructose он Ин Н CH,он нон носно А он нон но/н,он и онон н sucrose 13. Extra credit: What type of enzyme catalyzes phosphate transfer? What type of enzyme usually catalyzes the rearrangement of a molecule? (2 points each)
Answer for 1a and 1b 1. Below are the cyclic and open-chain structures for glucose and fructose. (6 points total) а) Label each structure as glucose or fructose. (1 pt each, 4 pts) b) Glucose is a(n) and fructose is a(n). (ketose, aldose) (1 pt each, 2 pts) CH,OH -он HOCH ОН HOH н но/сн,он он OH H o=4 нон Но+н н+он н+он CH2OH CH2OH с=0 но-н нон н+он Сн,он
Question 28 5 pts Which of the following reaction conditions would specifically target the anomeric carbon of the pyranese below: OH CH OH 6 LOH HO HO cat. HCI H2O PdC H2 BnBr. Nah DMF heat TBDPSCI AgNO, IV - HIO PaBaso CH,COCH cat. H2SO4 V cat.HCI CH, OH VII VI VIII ом O VIII O VII O III OV OIV
Also Which is the anomeric carbon? The structure of the dissaccharide lactose is shown, which is the main sugar found in milk. OH m CH,он OH K O -I KOH XXH VH A Ve OHfCH OH - OH o Identify an acetal carbon in lactose. Identify a hemiacetal carbon in lactose.
Which of the following reaction conditions would specifically target the anomeric carbon of the pyranose below: OH CH OH 20 НО. он HO cal. HCI H20 PaC, H2 II BnBr, NaH DMF, heat III TBDPSCI AgNO, IV HIO CH,COCH, cat. H,SO V cat. HCI CH,OH VII Pd/Baso H VIII VI O VI O O O VII O IV OV VII
estion 15 of 16 > Question Fructose is one of three dietary monosaccarides, also known as "fruit sugar". It is almost twice as sweet as normal table sugar, sucrose. Answer the questions based on the structure of fructose. нс — он Select the chiral centers in fructose. Ho—2H Hh ChOH H- & OH нс — он C-6 C-4 C-3 C-5 C-2 C-1 Classify this monosaccharide according to the position of the carbonyl group and the number of carbon atoms in...