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博碩士論文 etd-0703103-095535 詳細資訊
Title page for etd-0703103-095535
論文名稱
Title
多取代焦谷胺酯的合成研究及其在天然物合成的應用
Synthetic Studies of Polysubstituted Pyroglutamates and Its Applications in Natural Products Synthesis
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
90
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2003-06-27
繳交日期
Date of Submission
2003-07-03
關鍵字
Keywords
克洛費葛、洛利普南、紅藻胺酸、假天芥菜烷、焦谷胺酯、貝克洛芬、[3+2]環合加成反應
baclofen, chlorpheg, [3+2]cycloaddition, pseudoheliotridane, pyroglutamate, rolipram, kainic acid
統計
Statistics
本論文已被瀏覽 5687 次,被下載 2958
The thesis/dissertation has been browsed 5687 times, has been downloaded 2958 times.
中文摘要
我們開發一個相當有效率的合成方法,在一個反應步驟中,將α-磺醯基乙醯胺的三個原子單元與α-溴-α,β-不飽和酯的二個原子單元進行環合加成反應,建構出含氮五員雜環的基本骨架;若使用含不同取代基的α-溴-α,β-不飽和酯,即可得五員雜環上有高立體選擇性多取代基的焦谷胺酯衍生物。運用此一結果,再作進一步的官能基轉換、碳鏈的延伸、環的加成或開環反應,即可分別應用在洛利普南(Rolipram)、克洛費葛(Chlorpheg)、貝克洛芬(Baclofen)、假天芥菜烷(Pseudoheliotridane)等藥物的合成,以及紅藻胺酸(Kainic acid)的合成研究上。

Abstract
We have explored a formal [3+2] strategy that is synthetically useful for constructing polysubstituted pyroglutamates with three contiguous chiral centers in one step. Base-induced coupling/cyclization reactions of a-sulfonylacetamide with various ethyl (Z)-2-bromo-2-propenoates have been carried out. This reaction with high diastereoselectivity has been applied to the synthesis of Rolipram, Chlorpheg, Baclofen, Pseudoheliotridane and Kainic acid.

目次 Table of Contents
第一篇:多取代焦谷胺酯的合成研究
一、 前言………………………………………………………01
二、 結果與討論………………………………………………06
三、 結論………………………………………………………17

第二篇:多取代焦谷胺酯在藥物及天然物合成上的應用
第一章、 洛利普南的合成研究
一、 前言………………………………………………………19
二、 結果與討論………………………………………………24
三、 結論………………………………………………………28

第二章、 克洛費葛與貝克洛芬的合成研究
一、 前言………………………………………………………29
二、 結果與討論………………………………………………33
三、 結論………………………………………………………36

第三章、 假天芥菜烷的合成研究
一、 前言………………………………………………………37
二、 結果與討論………………………………………………40
三、 結論………………………………………………………43

第四章、 紅藻胺酸的合成研究
一、 前言………………………………………………………44
二、 結果與討論………………………………………………48
三、 結論………………………………………………………54

實驗部分………………………………………………………………55

參考文獻………………………………………………………………89

附錄:光譜資料
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