(3R,4S)-4-(5-ethyl-2-pyridyl)-3-triisopropylsilyloxy-2-azetidinone | 647840-37-7

• 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)-4-(5-ethyl-2-pyridyl)-3-triisopropylsilyloxy-2-azetidinone
• 英文别名: (3R,4S)-4-(5-ethylpyridin-2-yl)-3-tri(propan-2-yl)silyloxyazetidin-2-one
• CAS: 647840-37-7
• 化学式: C₁₉H₃₂N₂O₂Si
• 分子量: 348.561
• InChiKey: PTJBMNRRSDYJLX-ZWKOTPCHSA-N

物化性质

• 沸点：
  466.5±45.0 °C(Predicted)
• 密度：
  1.01±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.38
• 重原子数：
  24.0
• 可旋转键数：
  7.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.68
• 拓扑面积：
  51.22
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (3R,4S)-4-(5-ethyl-2-pyridyl)-3-triisopropylsilyloxy-2-azetidinone 在 4-二甲氨基吡啶 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 为溶剂， 生成 (1S,2S,3R,4S,5R,8R,9S,10R,13S)-4-acetoxy-2-benzoyloxy-5,20-epoxy-1-hydroxy-9,10-[(1S)-2-propenylidenedioxy]tax-11-en-13-yl (2R,3S)-3-(tert-butoxycarbonylamino)-3-(5-ethyl-2-pyridyl)-2-triisopropylsilyloxypropionate
  参考文献：
  名称：

  New highly active taxoids from 9β-Dihydrobaccatin-9,10-acetals. Part 4

  摘要：

  It was shown that a new taxane analogue 3, which exhibited both in vitro antitumor activity and in vivo efficacy by both iv and po administration, was prone to be metabolized by human liver microsomes. We identified a major metabolite, M-1. generated by human liver microsomes as 20a, a hydroxylated compound at the pyridine ring of 3. To improve the metabolic stability of 3, we designed and synthesized new taxane analogues based on the structure of M-1. and obtained some compounds that maintained excellent antitumor activity and were scarcely metabolized by human liver microsomes. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(03)00454-1
• 作为产物：
  描述：

  5-乙基吡啶-2-甲醛 在 ammonium cerium(IV) nitrate 、 sodium sulfate 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 、 水 、 乙腈 、 苯 为溶剂， 反应 3.17h， 生成 (3R,4S)-4-(5-ethyl-2-pyridyl)-3-triisopropylsilyloxy-2-azetidinone
  参考文献：
  名称：

  New highly active taxoids from 9β-Dihydrobaccatin-9,10-acetals. Part 4

  摘要：

  It was shown that a new taxane analogue 3, which exhibited both in vitro antitumor activity and in vivo efficacy by both iv and po administration, was prone to be metabolized by human liver microsomes. We identified a major metabolite, M-1. generated by human liver microsomes as 20a, a hydroxylated compound at the pyridine ring of 3. To improve the metabolic stability of 3, we designed and synthesized new taxane analogues based on the structure of M-1. and obtained some compounds that maintained excellent antitumor activity and were scarcely metabolized by human liver microsomes. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(03)00454-1

文献信息

• New highly active taxoids from 9β-Dihydrobaccatin-9,10-acetals. Part 4
  作者：Yasuyuki Takeda、Kouichi Uoto、Jun Chiba、Takao Horiuchi、Michio Iwahana、Ryo Atsumi、Chiho Ono、Hirofumi Terasawa、Tsunehiko Soga

  DOI：10.1016/s0968-0896(03)00454-1

  日期：2003.10

  It was shown that a new taxane analogue 3, which exhibited both in vitro antitumor activity and in vivo efficacy by both iv and po administration, was prone to be metabolized by human liver microsomes. We identified a major metabolite, M-1. generated by human liver microsomes as 20a, a hydroxylated compound at the pyridine ring of 3. To improve the metabolic stability of 3, we designed and synthesized new taxane analogues based on the structure of M-1. and obtained some compounds that maintained excellent antitumor activity and were scarcely metabolized by human liver microsomes. (C) 2003 Elsevier Ltd. All rights reserved.