carbohydrates - PowerPoint PPT Presentation

1 / 42
About This Presentation
Title:

carbohydrates

Description:

Title: PowerPoint Author: M Last modified by: Chiral Created Date: 7/1/2004 4:14:26 AM Document presentation format: – PowerPoint PPT presentation

Number of Views:20
Avg rating:3.0/5.0
Slides: 43
Provided by: M1194
Category:

less

Transcript and Presenter's Notes

Title: carbohydrates


1
????
????
  • ?????
  • carbohydrates

2

???????????????
???????????
??Cn(H2O)m
??????????
?
???
??? (???)
???
???
3
?? (monosaccharides ) ???(Oligosaccharides )
2-10??? ???(Polysaccharides) gt 10 ???
??
??
?? ??
????????
?? ??
???????
4

?
???????,????????????
5
?????????????
n ????,2n???????
1. ??????? Fisher??? ?????
6
2. ????
????????????D-()-?????D??
?L-(-)-?????L??
7
?????????
???????(??)
? HCN ?????
???????
?????NaHSO3??? ??????? IR? ?CO ??
NMR ? OC-H ??
?? ???
8
  • ???????
  • ?lt50?????? ?gt98??????
  • ?????? ??????
  • m.p. 146 ? m.p. 150 ?
  • 112o ? 52.7o ? 18.7o

a
9
???????????????
?
10
????????,?????????,????? lt50? ??????a-??a112
gt98? ?????ß-??a18.7 ?????????????,
a-???ß-?????, ??????(a36.4ß 63.6)? 52.7 O
11
?????????????
D-???CH2OH??
12
?????a?ß?????
?????? a-? ???????? ß-? ????????
?NMR 13C ?? a-??C1??OH????,?C3?C5????,
?C1?C3?C5?d?ß???
13
???? (??)
14
????????,??????????? ????, ??a-?, ß-? ??a-?,
ß -?
15
???????
???????? 1?????????
16
?
17
???????????
?
18
?????????????,????
19
?????????
????????,???????,??
20
2???????(pH6)
21
3??????
4???????
22
??????
???????? ????C???,??C???????,
????? ? ?????
? ? ? ?
23
??180o????????????,?
???????????,??????!
24
????????
25
?????????? ??,??????? ?????????? ?????C1?C2??
? ??????D-()?? ?????
?C3?C4?C5?? ????,?? ?????
26
??????????
??
27
??
28
Wohl?
29
????????(?)
????
30
????
??
31
(No Transcript)
32
????
?? 50 ?? 80 ?? 100
?????
M 2.5x105106, n gt1500
??????? (????)
33
?????
??-D-()-???,1,4??,ß??, ???????,
??????(?????) ???????????????
34
?? ? ??? ?????Schweizer??(CuSO4?20???)
????????????,???? (???????)????.
??????
35
????
? ?? (???,?????????)
?????? ???? ?????
? ??? (????)
????? ??? ??????
??????
????(???) ?????
? ??
a ????? b ??????(CMC) ROCH2COONa ????,???????
????
36
????
?? 6282 (5775) ?? 5775 ?? 6572 (65)
??????(??20) 1,4??,a-?? (???)
m10004000 ??????
???6???
??????(?80) m 150010000
???1,4??,a- ?? ???1,6??,a- ??
37
??2025??????????
??????? ??a- ??,???? ß -??,?????? ?????????,? ????
?(???????), ????????,?????I2 , ??????????????
38
?????????, a- ??,m 108,????
810????????,??????? ???
??????????
M 4x1042x105 1,6- a- ??
???
39
???????,????? ????????
?????,???? ??----?????
??????,
?????
40
?
??????? ????????? ???????
?? Xylose
41
?????
RNA?
?DNA
42
The End of Chapter 18
Thanks for Your Attention
Write a Comment
User Comments (0)
About PowerShow.com