在众多的羟基保护方法中，选择了乙酰氧基对其进行了保护。
We select the acetoxy group to protect the hydroxy group from a great number of the protection methods for the hydroxy group.
最常用的羟基保护基可归纳为三类：酯类、醚类和缩醛或缩酮类。
The hydroxyl groups can be changed into esters, ethers, acetals and ketals, etc.
任意基团在反应步骤完成后可以很容易地除去的基团都适合做羟基保护基团。
Suitable hydroxy-protecting groups are ether-forming groups that can be removed easily after completion of all other reaction steps.
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