英语语法分析

R "is a replaceable function, e. G. Acetoxy, methoxy, their acyloxy and alkoxy homologs or halo."

是取化基，如乙氧基、甲氧基及它们的环氧和烷氧同系物或卤基。

We select the acetoxy group to protect the hydroxy group from a great number of the protection methods for the hydroxy group.

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。

The relative stereochemistry of the 1, 10-double bond and that of the methoxyl, methyl, and acetoxy groups were determined by NOESY experiments and analyses of the coupling constants.

通过NOESY实验以及偶合常数的分析，确定了其结构中1,10位双键和甲氧基、乙酰氧基、甲基等基团的相对构型。