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研究生: 張凱宣
Kai-Hsuan Chang
論文名稱: 設計合成新型的唾液酸轉移酶抑制劑
Design and synthesis of sulfur-Cn-linked analogues of CMP-Neu5Ac as potential sialyltransferase inhibitors
指導教授: 李文仁
Wen-Ren Li
李文山
Wen-Shan Li
口試委員:
學位類別: 碩士
Master
系所名稱: 理學院 - 化學學系
Department of Chemistry
畢業學年度: 91
語文別: 中文
論文頁數: 101
中文關鍵詞: 氫化唾液酸轉移酶抑制劑類固醇
外文關鍵詞: sialyltransferase, steroid, inhibitor, hydrogenation
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  • Part 1
    我們發展出了一種新的氫化方式用來還原鹵烯類化合物。利用Cu(II)/Fe(III)的複合物和hydrazine,可以選擇性的氫化具有類固醇結構的鹵烯類化合物,而有效的合成出17b halo-的類固醇化合物。此類化合物有可能是抗雌激素或是雌激素受體的顯像劑。而此化反應具有高的b立體選擇性且沒有副產物的產生。
    Part 2
    我們發展出一種新的合成方法來合成含硫烷類或芳香族鏈鍵劑的CMP-Neu5Ac衍生物。此合成方式包含了將peracetylated sialic acid methyl ester和mercaptoalkyl (aryl) trichloroacetate連接在一起,且具有很高的b-立體選擇性。接著可以選擇性的將trichloroacetyl group去掉,而得到hydroxyalkyl及hydroxyaryl thioglycosides。最後經由O-phosphitylation、氧化及去保護的步驟可得到最終產物。


    Part 1
    A new system for hydrogenation of haloalkenes is reported. Cu(II)/Fe(III)-mediated selective hydrogenation of steroidal haloalkenes in the presence of hydrazine proves to be a very efficient method for the synthesis of 17b-halosteroids, potential candidates as antiestrogens or androgen receptor-mediated imaging agents. The reaction stereo- specifically affords b-haloalkanes without any concomitant formation of dehalogenation products.
    Part 2
    A new approach to the synthesis of anomeric sulfur analogues of CMP-Neu5Ac containing alkane or arene linkage is described. The procedure involves the high b-stereoselectivity in sialylation of the peracetylated sialic acid methyl ester with mercaptoalkyl (aryl) trichloroacetate, followed by selective deprotection of the trichloroacetyl group to the corresponding hydroxyalkyl and hydroxyaryl thioglycosides. Subsequent O-phosphitylation, oxidation and deprotection led to the isolation of the target compounds.

    謝誌…………………………………………………………………………………...i. 中文摘要……………………………………………………………………………..ii. Abstract………………………………………………………………………………iii. 目錄…………………………………………………………………………………..iv. 圖目錄………………………………………………………………………………..vi. 表目錄………………………………………………………………………………viii. Part 1. ..…...…………………………………………………………………………..1. 中文摘要……………………………………………………………………………..2. Abstract……………………………………………………………………………….3. 一、 導論……………………………………………………………………………..4. 二、 結果與討論……………………………………………………………………..6. 1. 新型氫化試劑的發展………………………………………………………6. 2. 含鹵類固醇的合成及其氫化………………………………………………7. 3. 非類固醇化合物的合成及其氫化………………………………………..13. 4. 結論………………………………………………………………………..15. 5. 未來與展望………………………………………………………………..16. 三、 實驗與光譜數據………………………………………………………………17. 1. 實驗儀器…………………………………………………………………..17. 2. 實驗藥品…………………………………………………………………..18. 3. 一般實驗方法……………………………………………………………..19. 四、 參考文獻………………………………………………………………………32. Part 2. ..…...…………………………………………………………………………34. 中文摘要……………………………………………………………………………35. Abstract……………………………………………………………………………...36. 一、 導論……………………………………………………………………………37. 1. 唾液酸的結構與功能……………………………………………………..37. 2. 唾液酸轉移酶在生物上的功能…………………………………………..39. 3. 唾液酸轉移酶抑制劑的設計……………………………………………..41. 3.1以donor結構為基礎所設計的抑制劑…………………………………...41. 3.2過渡狀態類似物的抑制劑………………………………………………..43. 3.3醣受體類似物的抑制劑…………………………………………………..44. 4. 論文實驗的設計…………………………………………………………..46. 二、 結果與討論……………………………………………………………………47. 1. 合成含硫鍵鏈劑的唾液酸衍生物………………………………………..47. 1.1含硫唾液酸衍生物的合成嘗試…………………………………………..47. 1.2合成含硫烷類鍵鏈劑的唾液酸衍生物…………………………………..52. 1.3合成含硫芳香族鍵鏈劑的唾液酸衍生物………………………………..55. 1.4結論………………………………………………………………………..57. 2. 含硫抑制劑的合成………………………………………………………..58. 2.1含硫脂肪鏈抑制劑的合成………………………………………………..58. 2.2含硫芳香族鏈鍵劑抑制劑的合成………………………………………..62. 2.3結論………………………………………………………………………..66. 3. 未來與展望………………………………………………………………..67. 3.1環狀抑制劑的設計………………………………………………………..67. 3.2嘗試合成環狀抑制劑……………………………………………………..68. 3.3唾液酸轉移酶donor及acceptor的合成…………………………………69. 3.4結論………………………………………………………………………..71. 三、 實驗與光譜數據………………………………………………………………72. 1. 實驗儀器…………………………………………………………………..72. 2. 實驗藥品…………………………………………………………………..73. 3. 一般實驗方法……………………………………………………………..75. 參考文獻…………………………………………………………………………..100.

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