(3R*,4R*)-3-ethyl-4-phenylmethyl-2-azetidinone

• 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*,4R*)-3-ethyl-4-phenylmethyl-2-azetidinone
• 英文别名: (3S,4S)-4-benzyl-3-ethylazetidin-2-one
• 化学式: C₁₂H₁₅NO
• 分子量: 189.257
• InChiKey: FAFHHUMXOSAYBA-QWRGUYRKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (3R*,4R*)-3-ethyl-4-phenylmethyl-2-azetidinone 在 ruthenium(IV) oxide 、 sodium periodate 、 三乙胺 作用下， 以 甲醇 、 四氯化碳 、 N,N-二甲基甲酰胺 、 乙腈 、 苯 为溶剂， 反应 74.5h， 生成 (3R*,4R*)-N-(tert-butyldimethylsilyl)-3-ethyl-4-(methoxycarbonylmethyl)azetidin-2-one
  参考文献：
  名称：

  N-乙烯基α-溴酰胺的自由基环化反应合成4-氧代-2-氮杂环丁烷乙酸

  摘要：

  Bu 3 SnH介导的α-溴酰胺8的自由基环化，在N-乙烯基键的末端带有苯基和苯硫基取代基，以4 -exo-trig方式进行，得到β-内酰胺9。掺入产物9中的苯基的四氧化钌氧化提供了4-氧代-2-氮杂环丁烷乙酸13的新合成，4-氧代-2-氮杂环丁烷乙酸是（±）-PS-5的有用中间体。还通过N的不对称自由基环化获得了分别用于合成（+）-PS-5和（+）-硫霉素的关键中间体手性4-氧代-2-氮杂环丁烷乙酸23和36。-在侧链具有手性助剂的乙烯基-α-溴酰胺。

  DOI：

  10.1016/0040-4020(96)00849-6
• 作为产物：
  描述：

  N-(1-甲氧基-2-苯基乙基)氨基甲酸甲酯 在 三异丙氧基氯化钛 、 氢溴酸 、 溶剂黄146 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 为溶剂， 生成 (3R*,4R*)-3-ethyl-4-phenylmethyl-2-azetidinone
  参考文献：
  名称：

  A New Method for the Synthesis of β-Amino Acid Derivatives and β-Lactams. Reaction of N-Alkoxycarbonyl-1-methoxyamines with Esters

  摘要：

  The reaction of N-alkoxycarbonyl-1-methoxyamines with esters is an alternative to the reaction of imines with esters for the synthesis of beta-amino acid derivatives. In this reaction, N-alkoxycarbony-1-methoxyamines corresponding to unstable imines can also be employed. Although anti adducts were obtained preferentially in the absence of Ti complexes, the diastereoselectivity of this reaction was reversed by the addition of Ti(OPr-i)(4). The obtained adducts were transformed to the corresponding beta-lactams.

  DOI：

  10.1021/jo990821q

文献信息

• β-Lactam Derivatives as Inhibitors of Human Cytomegalovirus Protease
  作者：Christiane Yoakim、William W. Ogilvie、Dale R. Cameron、Catherine Chabot、Ingrid Guse、Bruno Haché、Julie Naud、Jeff A. O'Meara、Raymond Plante、Robert Déziel

  DOI：10.1021/jm980131z

  日期：1998.7.1

  The development of novel monobactam inhibitors of HCMV protease incorporating a carbon side chain at C-4 and a urea function at N-1 is described. Substitution with small groups at the C-3 position of the beta-lactam ring gave an increase in enzymatic activity and in stability; however, a lack of selectivity against other serine proteases was noted. The use of both tri- and tetrasubstituted urea functionalities gave effective inhibitors of HCMV protease. Benzyl substitution of the urea moiety was beneficial, especially when strong electron-withdrawing groups where attached at the para position. Modest antiviral activity was found in a plaque reduction assay.
• Synthesis of 4-oxo-2-azetidineacetic acids by means of radical cyclization of N-vinylic α-bromo amides
  作者：Hiroyuki Ishibashi、Kazuya Kodama、Chisato Kameoka、Hirotaka Kawanami、Masazumi Ikeda

  DOI：10.1016/0040-4020(96)00849-6

  日期：1996.10

  Bu3SnH-mediated radical cyclization of α-bromo amide 8, bearing phenyl and phenylthio substituents at the terminus of the N-vinylic bond, proceeded in a 4-exo-trig manner to give β-lactam 9. Ruthenium tetroxide oxidation of the phenyl group incorporated into the product 9 provided a new synthesis of 4-oxo-2-azetidineacetic acid 13, a usuful intermediate for (±)-PS-5. Chiral 4-oxo-2-azetidineacetic acids 23 and

  Bu 3 SnH介导的α-溴酰胺8的自由基环化，在N-乙烯基键的末端带有苯基和苯硫基取代基，以4 -exo-trig方式进行，得到β-内酰胺9。掺入产物9中的苯基的四氧化钌氧化提供了4-氧代-2-氮杂环丁烷乙酸13的新合成，4-氧代-2-氮杂环丁烷乙酸是（±）-PS-5的有用中间体。还通过N的不对称自由基环化获得了分别用于合成（+）-PS-5和（+）-硫霉素的关键中间体手性4-氧代-2-氮杂环丁烷乙酸23和36。-在侧链具有手性助剂的乙烯基-α-溴酰胺。
• A New Method for the Synthesis of β-Amino Acid Derivatives and β-Lactams. Reaction of <i>N</i>-Alkoxycarbonyl-1-methoxyamines with Esters
  作者：Naoki Kise、Nasuo Ueda

  DOI：10.1021/jo990821q

  日期：1999.10.1

  The reaction of N-alkoxycarbonyl-1-methoxyamines with esters is an alternative to the reaction of imines with esters for the synthesis of beta-amino acid derivatives. In this reaction, N-alkoxycarbony-1-methoxyamines corresponding to unstable imines can also be employed. Although anti adducts were obtained preferentially in the absence of Ti complexes, the diastereoselectivity of this reaction was reversed by the addition of Ti(OPr-i)(4). The obtained adducts were transformed to the corresponding beta-lactams.