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njcj

新虫 (小有名气)

[交流] 核磁分析:β-D-葡萄糖环状结构(六元环)在做氢谱分析时有几种氢?

如题,β-D-葡萄糖环状结构(六元环)在做氢谱分析时有几种氢?在溶液中β-D-葡萄糖和α-D-葡萄糖不是相互转化吗?怎么分析?
谢谢!!!

[ Last edited by njcj on 2009-12-30 at 10:06 ]
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yinanjieda

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njcj(金币+10,VIP+0):多谢这么有心支持 1-3 09:45
建议你在chemoffice中画出结构,然后做NMR模拟
记得学有机时学过,β-D-葡萄糖和α-D-葡萄糖会相互转换,糖羟基和醛基的结合不稳定嘛


http://www.namipan.com/d/untitle ... f8537a140dfdb0d0000
这个是我画的α-D-吡喃葡萄糖并做了HNMR模拟,数数有多少种氢吧

[ Last edited by yinanjieda on 2010-1-2 at 18:03 ]
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2楼2009-12-30 10:31:20
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