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第37讲-证明葡萄糖的构型并合成两种非天然产物Lecture 37 - Proving the Configuration of Glucose and Synthesizing Two Unnatural Products |
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| 课程网址: | http://videolectures.net/yalespan125bs2011_mcbride_lec37/ |
| 主讲教师: | J. Michael McBride |
| 开课单位: | 耶鲁大学 |
| 开课时间: | 2014-08-19 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Modern spectroscopic tools show not only the constitution, configuration, and conformation of glucose but also how it interconverts between isomeric hemiketal pyranose rings. One of mankind's great accomplishments was determinining its constitution and especially its configuration before such spectroscopy. By 1887 Heinrich Kiliani had established the constitution of glucose as an aldohexose, and with help from Emil Fischer, he developed a method for homologating aldoses. Fisher assembled a great deal of experimental evidence on interconversion of natural and artificial aldoses, and their derivatives, especially their crystalline osazones. In 1892 he used this evidence to prove logically which of eight aldohexose configurations corresponds to glucose and to provide definitive support for van't Hoff's stereochemical theory. In 1991 Cram, Tanner, and Thomas reported the NMR spectrum of antiaromatic cyclobutadiene, which they prepared by photolysis inside a clamshell molecule that they designed and constructed in order to isolate this highly reactive molecule. |
| 关 键 词: | 现代光谱学; 葡萄糖; 高反应性分子 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2021-11-19：zkj |
| 最后编审: | 2021-11-19：zkj |
| 阅读次数: | 55 |