pyran的近义词

on the basis of coumarin lasing dyes, a series of pyran type lasing dyes have been synthesized by rigidization and cyclization.

在香豆素激光染料的基础上进行刚化环构，合成了10个吡喃类激光染料。

under the acid free condition, 3 acetyl 2 hydroxy 6 methyl pyran 4 one ( 8) was obtained and its structure was confirmed by x ray diffraction analysis.

在没有酸催化的条件下，反应生成3乙酰基2羟基6甲基-吡喃4酮（8），并通过单晶X射线衍射分析确定了产物的结构；

uv, ir and 1h-nmr analysis, the three fractions of polysaccharide are β-glycosidic linkage of the pyran ring polysaccharide.

经UV、IR和1H-NMR分析可知，三种多糖为β-糖苷键连接的吡喃环多糖。