(3R,4S)-3-triisopropylsilyloxy-4-(2-methylprop-1-enyl)azetidin-2-one | 178250-09-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酰胺类
• 英文名称: (3R,4S)-3-triisopropylsilyloxy-4-(2-methylprop-1-enyl)azetidin-2-one
• 英文别名: (3R,4S)-3-triisopropylsilyloxy-4-(2-methylpropen-2-yl)azetidin-2-one；(3R,4S)-3-triisopropylsiloxy-4-(2-methylprop-1-enyl)azetidin-2-one；(3R,4S)-4-(2-methylprop-1-enyl)-3-tri(propan-2-yl)silyloxyazetidin-2-one
• CAS: 178250-09-4
• 化学式: C₁₆H₃₁NO₂Si
• 分子量: 297.513
• InChiKey: DAWWSWDLDOYMMG-LSDHHAIUSA-N

物化性质

• 沸点：
  372.1±42.0 °C(Predicted)
• 密度：
  0.94±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.01
• 重原子数：
  20
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.81
• 拓扑面积：
  38.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (3R,4S)-3-triisopropylsilyloxy-4-(2-methylprop-1-enyl)azetidin-2-one 在 palladium on activated charcoal 吡啶 、 4-二甲氨基吡啶 、 氢氟酸 、 氢气 、 三乙胺 、 lithium hexamethyldisilazane 作用下， 以 二氯甲烷 、 乙酸乙酯 、 乙腈 为溶剂， -45.0~40.0 ℃ 、101.33 kPa 条件下， 反应 39.2h， 生成 沃塔紫杉醇
  参考文献：
  名称：

  源自14个β-羟基-10-去乙酰基浆果赤霉素III的类紫杉醇的合成及其构效关系。

  摘要：

  通过β-内酰胺合成子法合成了一系列衍生自14个β-羟基-10-去乙酰基浆果赤霉素III的新的类紫杉醇。如此合成的大多数新类紫杉醇对人卵巢（A121），非小细胞肺癌（A549），结肠（HT-29）和乳腺癌（MCF-7）癌细胞系均具有出色的细胞毒性，其中一些类紫杉醇显示的亚纳摩尔IC50值比紫杉醇和多西紫杉醇好几倍至1个数量级。3'-和3'-N位置的修饰对活性产生显着影响。对于C-3'处的取代基，细胞毒性以2-呋喃基约2-甲基-1-丙烯基>或= 2-甲基丙基>（E）-1-丙烯基>或=正丙基>苯基>>的顺序降低2，2-二甲基丙基。对于3'-N取代基，活性按照t-BuOCO> Ph>正己酰基的顺序降低。通过适当修饰C-10上的取代基，可以观察到对表达多药耐药性（MDR）表型的耐阿霉素的人乳腺癌细胞MCF7-R的细胞毒性显着增加。在C-10处观察到的取代基对MCF7-R活性的显着影响可归因于有效抑制

  DOI：

  10.1021/jm960563e
• 作为产物：
  描述：

  (3R,4S)-1-p-methoxyphenyl-3-triisopropylsiloxy-4-(2-methyl-1-propenyl)azetidin-2-one 在 ammonium cerium(IV) nitrate 作用下， 以 乙腈 为溶剂， 以90%的产率得到(3R,4S)-3-triisopropylsilyloxy-4-(2-methylprop-1-enyl)azetidin-2-one
  参考文献：
  名称：

  源自14个β-羟基-10-去乙酰基浆果赤霉素III的类紫杉醇的合成及其构效关系。

  摘要：

  通过β-内酰胺合成子法合成了一系列衍生自14个β-羟基-10-去乙酰基浆果赤霉素III的新的类紫杉醇。如此合成的大多数新类紫杉醇对人卵巢（A121），非小细胞肺癌（A549），结肠（HT-29）和乳腺癌（MCF-7）癌细胞系均具有出色的细胞毒性，其中一些类紫杉醇显示的亚纳摩尔IC50值比紫杉醇和多西紫杉醇好几倍至1个数量级。3'-和3'-N位置的修饰对活性产生显着影响。对于C-3'处的取代基，细胞毒性以2-呋喃基约2-甲基-1-丙烯基>或= 2-甲基丙基>（E）-1-丙烯基>或=正丙基>苯基>>的顺序降低2，2-二甲基丙基。对于3'-N取代基，活性按照t-BuOCO> Ph>正己酰基的顺序降低。通过适当修饰C-10上的取代基，可以观察到对表达多药耐药性（MDR）表型的耐阿霉素的人乳腺癌细胞MCF7-R的细胞毒性显着增加。在C-10处观察到的取代基对MCF7-R活性的显着影响可归因于有效抑制

  DOI：

  10.1021/jm960563e

文献信息

• Design, Synthesis, and Biological Evaluation of Novel C14−C3′BzN-Linked Macrocyclic Taxoids
  作者：Liang Sun、Xudong Geng、Raphaël Geney、Yuan Li、Carlos Simmerling、Zhong Li、Joseph W. Lauher、Shujun Xia、Susan B. Horwitz、Jean M. Veith、Paula Pera、Ralph J. Bernacki、Iwao Ojima

  DOI：10.1021/jo801713q

  日期：2008.12.19

  and 16-membered macrocyclic taxoids. However, the RCM reaction to form the designed 14-membered macrocyclic taxoid did not proceed as planned. Instead, the attempted RCM reaction led to the occurrence of an unprecedented novel Ru-catalyzed diene-coupling process, giving the corresponding 15-membered macrocyclic taxoid (SB-T-2054). The biological activities of the novel macrocyclic taxoids were evaluated

  新型大环紫杉醇同源物被设计为模仿紫杉醇的生物活性构象。对“ REDOR-Taxol”结构的计算分析表明，该结构可以通过连接浆果赤霉素部分的C14位置和C3'N-苯甲酰基（C3'BzN）的邻位而刚性化。距离7.5 A，带有短连接子（4-6个原子）。选择7-TES-14β-烯丙氧基浆果赤霉素III和（3R，4S）-1-（2-链烯基苯甲酰基）-β-内酰胺作为关键组分，Ojima-Holton偶联提供相应的紫杉醇-二烯。紫杉醇-二烯的Ru催化的闭环复分解（RCM）提供了设计的15和16元大环类紫杉醇。但是，RCM反应形成设计的14元大环类紫杉烷类药物并没有按计划进行。反而，尝试的RCM反应导致发生前所未有的新型Ru催化的二烯偶联过程，从而得到相应的15元大环紫杉烷类化合物（SB-T-2054）。通过肿瘤细胞生长抑制（即细胞毒性）和微管蛋白聚合测定法评估了新型大环类紫杉醇的生物学活性。这些测定揭示了
• Synthesis of Novel C2−C3‘N-Linked Macrocyclic Taxoids by Means of Highly Regioselective Heck Macrocyclization
  作者：Xudong Geng、Michael L. Miller、Songnian Lin、Iwao Ojima

  DOI：10.1021/ol0354627

  日期：2003.10.1

  [reaction: see text] Novel C2-C3'N-linked macrocyclic taxoids are synthesized using intramolecular Heck reaction in the key step. Macrocyclization proceeds with high regioselectivity in good yield. Taxoids bearing an olefin moiety at C2 and an iodide at C3'N give exo-products exclusively. However, the endo-products are formed with up to 100% regioselectivity just by switching the positions of the olefin

  [反应：见正文]在关键步骤中，利用分子内Heck反应合成了新型的C2-C3'N连接的大环类紫杉醇。大环化以高区域选择性进行且产率高。在C2处带有烯烃部分，在C3'N处带有碘化物的类紫杉醇专门提供外生产物。然而，仅通过改变烯烃和碘化物部分的位置，就形成具有高达100％的区域选择性的内产物。这些大环类紫杉醇中的一些具有明显的细胞毒性。
• Design, synthesis and biological activity of novel C2-C3′ N-Linked macrocyclic taxoids
  作者：Iwao Ojima、Xudong Geng、Songnian Lin、Paula Pera、Ralph J Bernacki

  DOI：10.1016/s0960-894x(01)00747-8

  日期：2002.2

  A series of novel macrocyclic taxoids was designed and synthesized by connecting the C-2 and C-3' N positions of the taxoid framework with various tethers. Cytotoxicity of these macrocyclic taxoids was evaluated against a human breast cancer cell line LCC6-WT, and a couple of the taxoids exhibited 0.09-0.3 microM IC(50) values.

  通过将紫杉烷骨架的C-2和C-3'N位置与各种系链连接，设计并合成了一系列新颖的大环类紫杉烷。评估了这些大环类紫杉醇对人乳腺癌细胞LCC6-WT的细胞毒性，其中几个紫杉类具有0.09-0.3 microM IC（50）值。
• Design, Synthesis, and Biological Evaluation of New-Generation Taxoids
  作者：Iwao Ojima、Jin Chen、Liang Sun、Christopher P. Borella、Tao Wang、Michael L. Miller、Songnian Lin、Xudong Geng、Larisa Kuznetsova、Chuanxing Qu、David Gallager、Xianrui Zhao、Ilaria Zanardi、Shujun Xia、Susan B. Horwitz、Jon Mallen-St. Clair、Jennifer L. Guerriero、Dafna Bar-Sagi、Jean M. Veith、Paula Pera、Ralph J. Bernacki

  DOI：10.1021/jm800086e

  日期：2008.6.1

  Novel second-generation taxoids with systematic modifications at the C2, C10, and C3'N positions were synthesized and their structure-activity relationships studied. A number of these taxoids exhibited exceptionally high potency against multidrug-resistant cell lines, and several taxoids exhibited virtually no difference in potency against the drug-sensitive and drug-resistant cell lines. These exceptionally potent taxoids were termed "third-generation taxoids". 19 (SB-T-1214), 14g(SB-T-121303), and 14i (SB-T-1213031) exhibited excellent activity against paclitaxel-resistant ovarian cancer cell lines with mutations in beta-tubulin as well, wherein the drug resistance is mediated by the beta-tubulin mutation. These taxoids were found to possess exceptional activity in promoting tubulin assembly, forming numerous very short microtubules similar to those formed by discodermolide. Taxoids 19 and 14g also showed excellent cytotoxicity against four pancreatic cancer cell lines, expressing three to four multidrug-resistant genes. Moreover, taxoid 19 exhibited excellent in vivo efficacy against highly drug-resistant CFPAC-1 pancreatic as well as DLD-1 human colon tumor xenografts in mice.
• Structure–activity relationship study of taxoids for their ability to activate murine macrophages as well as inhibit the growth of macrophage-like cells
  作者：Iwao Ojima、Cecilia L Fumero-Oderda、Scott D Kuduk、Zhuping Ma、Fumiko Kirikae、Teruo Kirikae

  DOI：10.1016/s0968-0896(03)00181-0

  日期：2003.7

  A series of new taxoids modified at the C-3', C-3'N, C-10, C-2 and C-7 positions has been designed, synthesized and evaluated for their potency to induce NO and TNF production by peritoneal murine macrophages (Mphi) from LPS-responsive C3H/HeN and LPS-hyporesponsive C3H/HeJ strains and human blood cells, and for their ability to inhibit the growth of Mphi-like cell lines J774.1 and J7.DEF3. The SAR-study has shown that the nature of the substituents at these positions have critical effect on the induction of TNF and NO production by Mphi. Positions G-3' and C-10 are the most flexible and an intriguing effect of the length of the substituents at the C-10 position is observed for taxoids bearing a straight chain alkanoyl moiety. An aromatic group at the C-3'N and C-2 positions is required for the activity, while only hydroxyl or acetyl substituents seem to be tolerated at the C-7 position. The natural stereochemistry in the C-13 isoserine side chain of the taxoids is an absolute requirement for macrophage activation. It has also been clearly shown that there is no correlation between the ability of the taxoids to induce TNF/NO production in C3H/HeN M and the cytotoxicity against Mphi-like cells. (C) 2003 Elsevier Science Ltd. All rights reserved.