hemiacetal

hemiacetal

1. any monosaccharide sugar that contains a ketone group or its hemiacetal

任何一种含有酮基或其半缩醛的单糖

2. any monosaccharide sugar that contains a ketone group or its hemiacetal.

任何一种含有酮基或其半缩醛的单糖。

3. With the absence of oxygen, branched alkaline would be produced.Whereas when oxygen was available, some other structures like hemiacetal, ether bond were produced.

其中无氧条件下可能发生侧链烷烃交联而形成支链，在有氧分子参与的情况下，反应进一步进行形成一些架桥结合，诸如半缩醛、醚键等等。

4. inner hemiacetal

内半缩醛

5. hemiacetal group

半缩醛基

6. hemiacetal ring formula

半缩醛环式

7. hemiacetal bond

半缩醛键

8. 1S-trans-Chrysanthemic acid, via epimerization of C1 position, has been converted into 1R-cis-caronaldehydic acid hemiacetal, an important intermediate in the commercial production of deltamethrin.

反式第一菊酸经甲酯化、臭氧化、还原和差向异构化制得1R-顺式皆醇酸内酯,再经过中间产物皆硫醚酸被转变成1R-顺式皆醛酸半缩醛内酯。

9. a monosaccharide sugar that contains the aldehyde group or is hemiacetal

含有乙醛基或其半缩醛的单糖

10. a monosaccharide sugar that contains the aldehyde group or is hemiacetal.

含有乙醛基或其半缩醛的单糖。

11. And finally we found that undering the catalysis of L-proline, the anhydride materials which are easily ringing formed hemiacetal cannot react with acetone using asymmetric Aldo reaction.

并发现，在L-脯氨酸催化下，易形成环状半缩醛结构的醛类化合物与丙酮不能进行不对称羟醛缩合反应。

12. The thiophane ring was established via reduction of hemiacetal, mesylation of diol, and double SN2 substitution of dimesylate.

经半缩醛的还原，甲磺酸酯化，硫代关环，构建四氢噻吩环；

13. aldosterone hemiacetal

醛甾酮半缩醛