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? ? Saccharide

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Title: carbohydrate Author: aa Last modified by: vip Created Date: 12/3/2000 1:58:30 AM Document presentation format: Company – PowerPoint PPT presentation

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Title: ? ? Saccharide


1
? ?Saccharide
  • ?????carbohydrate

2
  • ??
  • ??
  • ??
  • ??

????
?????2????
?????310????
????10????????
3
??? ? ?
??
??
4
??? ? ?
  • ????????????
  • ?????????
  • ?????????

5
??? Glucose
  • C6H12O6

D-???
6
??? C6H12O6

??????? 2416?
7
D-???

8
?????
ß-D-?????
anomer
a-D-?????
9
?- D-?????
?- D-?????
D-???
?D18.7
?D112
36
0.02
64
?????????D52.7
??????????????????
10
??????

?- D-?????
?- D-?????
11
?? Fructose

?-D-????
?-D-????
D-??
12
??? Galactose

D-?????
D-???
13
?? Ribose

D-????
D-??
14
???? Deoxyribose

D-????
15
????
  • ??3 ????
  • ??3, 4???
  • ????2-??
  • ??2 ????

16
(?)????

?-D-?????
?-D-??????? ?-D-????????
????? ???O????
???
17
(?)?????????
D-???
D-???
D-??
???
18
(?)????
  • 1. ??????(Tollens?Benedict?Fehling??)

Tollens??
??
Ag
???
(Fehling??? Benedict??)
Cu2O (???)
??
19
(?)????
  • 2.??????

D-???
D-????
20
(?)????
  • 3. ??????

D-?????
D-???
21
?
D-???
D-?????
22
(?)??????????
?????
23
Problem
  • In neutral or basic aqueous solutions, glycosides
    do not show mutarotation. However, if the
    solutions are made acidic, glycosides do show
    mutarotation. Explain why this occurs.

24
??? ? ?
H??
??? ?? ??
D-??? D-???
D-??? D-???
D-??? D-??
25
??? maltose
1 4
?-1,4-??
26
?? lactose
1 4
?-1,4-??
27
?? sucrose
1 2
?,?-1,2??
28
??? ? ?
  • ??(starch)
  • ??(glycogen)
  • ???(cellulose)

????
1030
????
7090
29
??? ????
?-1,4-??
30
??? ????
?-1,6-??
?-1,4-??
31
  • ???? ?? ????
  • ???? D-??? ?-1,4 ???
  • ???? D-??? ?-1,4 ???

  • ?-1,6
  • ?? D-??? ?-1,4 ???

  • ?-1,6
  • ??? D-??? ?-1,4 ???

32
???????
33
????????
ß-1,4
a-1,2
  • N-????-D-???D-???L-???

a-1,3
X
A? X N-????-D-???
B? X D-???
AB? X??N-????-D-????D-???
O? X 0
34
??????????????
??? ?? ?? ??



35
??? ?? ?? ??
Tollens?? Ag? Ag?
I2 ??
Br2 / H2O ?????
36
??
  • P282284
  • 1 (3)(4) 5 (1)(2)(3) 14 15
  • Essentials of Organic ChemistryP2728 10.3
    Glycoside formation

37
(No Transcript)
38
  • D-Glucaric acid undergoes lactonization to yield
    two different ?-lactones. What are their
    structures?

39
????
?-???? (??)
???
40
  • Molisch??
  • ?? ??
  • Seliwanoff??
  • ??? 2??????

?-?????
?
???????
?
41
????
D-????
D-???
42
????????
D-???-3-???
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