5-Azido-5-deoxy-1,2-O-isopropylidene-α-D-xylofuranose (4) and 5-azido-5-deoxy-1,2-O-isopropylidene-β-D-arabinofuranose (10) were prepared starting from D-xylose and D-arabinose, respectively. Using the oxidation-reduction way for the C-3 epimerization, 5-azido-5-deoxy-1,2-O-isopropylidene-α-D-ribofuranose (15) and 5-azido-5-deoxy-1,2-O-isopropylidene-β-D-lyxofuranose (17) were obtained from 4 and 10, respectively. The derivatives 4, 10, 15 and 17 afforded by acid hydrolysis, oxidation with bromine and catalytic hydrogenation successively the corresponding 5-azido-5-deoxy-D-pentofuranoses 6, 11, 18, 19, 5-azido-5-deoxy-D-pentonolactones 7, 12, 20, 21 and 5-amino-5-deoxy-D-pentonolactams 8, 13, 22, 23.
从
D-木糖和
D-阿拉伯糖开始制备5-Azido-5-deoxy-1,2-
O-异丙基亚-α-
D-木糖呋喃糖(
4)和5-azido-5-deoxy-1,2-
O-异丙基亚-β-D-阿拉伯
呋喃糖(
10)。使用氧化还原法进行C-3异构化,从
4和
10分别得到5-azido-5-deoxy-1,2-
O-异丙基亚-α-
D-核糖呋喃糖(
15)和5-azido-5-deoxy-1,2-
O-异丙基亚-β-D-莱克索
呋喃糖(
17)。通过酸
水解、
溴氧化和催化氢化,分别得到相应的5-azido-5-deoxy-D-戊糖
呋喃糖
6、
11、
18、
19,5-azido-5-deoxy-D-
戊内酯7、
12、
20、
21和5-
氨基-5-deoxy-D-戊内酰胺
8、
13、
22、
23。