为了便于掌握推断和记忆吡喃型糖的优势构象,本文介绍一个如何确定吡喃型糖优势构象的经验规则。用该规则能较容易地据吡喃型糖的霍沃思(Haworth)透视式确定糖的优势构象。同时可把糖的费歇尔(Fischer)投影式、霍沃思透视式和优势构象三者密切联系起来。一、单糖的相对构型单糖构型的命名通常根据费歇尔投影式 In order to facilitate the mastering of the dominant conformations of inferred and memory pyranose sugars, this article presents an empirical rule on how to determine the dominant conformations of pyranose sugars. This rule makes it easier to determine the dominant conformation of sugars from Haworth perspective of pyranose sugars. At the same time, the Fischer projection, the Haworth perspective and the dominant conformation of sugar can be closely linked. First, the relative monosaccharide configuration Monosaccharide configuration is usually based on the Fischer projection