JPS55130995A - Novel method of preparation of 2,3,2',3',4',6'-hexa-o-acetylmaltosan - Google Patents
Novel method of preparation of 2,3,2',3',4',6'-hexa-o-acetylmaltosanInfo
- Publication number
- JPS55130995A JPS55130995A JP3824579A JP3824579A JPS55130995A JP S55130995 A JPS55130995 A JP S55130995A JP 3824579 A JP3824579 A JP 3824579A JP 3824579 A JP3824579 A JP 3824579A JP S55130995 A JPS55130995 A JP S55130995A
- Authority
- JP
- Japan
- Prior art keywords
- hepta
- acetyl
- pentachlorophenol
- bromide
- acetylmaltosan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Saccharide Compounds (AREA)
Abstract
PURPOSE: Instead of monohalogenophenol, pentachlorophenol salt is used and made to react with hepta-acetylmaltosyl bromide to produce title compound useful as a starting material of glycoside antibiotics in high yield.
CONSTITUTION: The reaction between 2,3,6,2',3',4',6'-hepta-O-acetyl-α-maltosyl bromide of formula I (Ac is acetyl) and an alkali metal salt of pentachlorophenol is conducted in a solvent such as acetone at room temperature to give pentachlorophenyl-2,3,6,2',3',4',6'-hepta-O-acetyl-β-maltoside. Then, it is heated together with an alkali and immediately acetylated to form the objective compound of formula III.
EFFECT: The reaction yield rises from 37% in conventional method to 72% in the present invention.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3824579A JPS55130995A (en) | 1979-03-30 | 1979-03-30 | Novel method of preparation of 2,3,2',3',4',6'-hexa-o-acetylmaltosan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3824579A JPS55130995A (en) | 1979-03-30 | 1979-03-30 | Novel method of preparation of 2,3,2',3',4',6'-hexa-o-acetylmaltosan |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55130995A true JPS55130995A (en) | 1980-10-11 |
JPS5617358B2 JPS5617358B2 (en) | 1981-04-22 |
Family
ID=12519916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3824579A Granted JPS55130995A (en) | 1979-03-30 | 1979-03-30 | Novel method of preparation of 2,3,2',3',4',6'-hexa-o-acetylmaltosan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55130995A (en) |
-
1979
- 1979-03-30 JP JP3824579A patent/JPS55130995A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5617358B2 (en) | 1981-04-22 |
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