(3R,4S)-4-(benzyliminomethyl)-1-(4-methoxyphenyl)-3-phenylmethoxyazetidin-2-one | 183066-56-0

• 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-(benzyliminomethyl)-1-(4-methoxyphenyl)-3-phenylmethoxyazetidin-2-one
• CAS: 183066-56-0
• 化学式: C₂₅H₂₄N₂O₃
• 分子量: 400.477
• InChiKey: TZUOBEGQVLTHLX-BJKOFHAPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  30
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  51.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (3R,4S)-4-(benzyliminomethyl)-1-(4-methoxyphenyl)-3-phenylmethoxyazetidin-2-one 、 乙酰氧基乙酰氯 在 三乙胺 作用下， 以 甲苯 为溶剂， 反应 3.0h， 以75%的产率得到[(2S,3R)-1-benzyl-2-[(2S,3R)-1-(4-methoxyphenyl)-4-oxo-3-phenylmethoxyazetidin-2-yl]-4-oxoazetidin-3-yl] acetate
  参考文献：
  名称：

  C4,C4‘-Bis-β-lactam to Fused Bis-γ-lactam Rearrangement

  摘要：

  Optically pure cis,cis-C4,C4'-bis-beta-lactams 1a-d are obtained in good to excellent yields, in a single step, following two different approaches. Staudinger reaction of (S)-(4-phenyl-2-oxooxazolidinyl)acetyl chloride (2a) and p-anisyldiimine gave the corresponding bis-beta-lactam la as a single enantiomer. The reaction of glyoxal diimine derived from (S)-alpha-phenylethylamine and different alkoxy-substituted acid chlorides gave diastereomeric mixtures of cis,cis-bis-beta-lactams 1b-d, enantiomers at the bicyclic skeleton. The configuration of all compounds has been determined by X-ray diffraction analysis of enantiomerically pure aldehyde 4a and bis-beta-lactam Ib-a. The remaining bicyclic lactams have been chemically correlated to compound 1b-alpha and their configurations assigned. Starting from enantiomerically pure 4-formyl-2-azetidinone 4b, sequential imine formation and ketene cycloaddition allowed the synthesis of differently substituted, optically pure cis,cis-C4,C4'-bis-beta-lactams If-i in good overall yields. C4,C4'-Bis-beta-lactams smoothly rearranged to fused trans,trans-bis-gamma-lactams 7 upon basic treatment (NaOMe/MeOH) in a totally stereoselective process. The presence of alkyl groups attached to the lactam nitrogen inhibits the rearrangement. Differently substituted (aryl and alkyl substituents in either rings) bicyclic p-lactam systems gave the selective opening of the ring with the aromatic substituent attached to the lactam nitrogen. Monocyclic 2-azetidinones 8 with an amino ester side chain at C4 are then obtained. The synthesis of trans,cis-C4,C4'-bis-beta-lactam Ij and trans,trans-C4,C4'-bis-beta-lactam 11 has also been effected in the racemic form. Compound Ij with a trans,cis stereochemistry rearranged to cis,trans-bis-gamma-lactam 7d in the presence of base while the trans,trans-bicycle 11 gave monocyclic 2-azetidinone 8c with an amino ester side chain. Finally, trans,trans-bis-gamma-lactam 11 can be synthesized in a single step from glyoxal diimine 3a employing an excess of lithium isovalerate. A reaction pathway to account for all the observed data is proposed.

  DOI：

  10.1021/jo960826c
• 作为产物：
  描述：

  (3R,4R)-cis-1-(p-anisyl)-3-(benzyloxy)-4-<(S)-2,2-dimethyl-1,3-dioxolan-4-yl>-2-azetidinone 在 sodium periodate 、 水 、 碳酸氢钠 、 magnesium sulfate 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 为溶剂， 反应 6.0h， 生成 (3R,4S)-4-(benzyliminomethyl)-1-(4-methoxyphenyl)-3-phenylmethoxyazetidin-2-one
  参考文献：
  名称：

  4-imidoyl-、4-oxiranyl- 和 4-propargyloxyphenyl-取代的 β-内酰胺结构单元的合成

  摘要：

  在这项研究中，实现了 4-亚胺酰基-、4-环氧乙烷基-和 4-炔丙基氧基苯基取代的 β-内酰胺作为杂环化学中多功能构建单元的制备。人们努力部署这些多价化合物，以确保在形成新的双环或多环框架的过程中发生环化反应，在 3-chloro-4-propargyloxyphenyl-β-lactam 底物的情况下，能够制备出前所未有的 β-内酰胺融合的苯并三唑并恶唑烷支架。后一种多杂环的化学结构通过 X 射线分析明确确定。

  DOI：

  10.1002/jhet.4597

文献信息

• C4,C4‘-Bis-β-lactam to Fused Bis-γ-lactam Rearrangement
  作者：Benito Alcaide、Yolanda Martín-Cantalejo、Javier Pérez-Castells、Miguel A. Sierra、Angeles Monge

  DOI：10.1021/jo960826c

  日期：1996.1.1

  Optically pure cis,cis-C4,C4'-bis-beta-lactams 1a-d are obtained in good to excellent yields, in a single step, following two different approaches. Staudinger reaction of (S)-(4-phenyl-2-oxooxazolidinyl)acetyl chloride (2a) and p-anisyldiimine gave the corresponding bis-beta-lactam la as a single enantiomer. The reaction of glyoxal diimine derived from (S)-alpha-phenylethylamine and different alkoxy-substituted acid chlorides gave diastereomeric mixtures of cis,cis-bis-beta-lactams 1b-d, enantiomers at the bicyclic skeleton. The configuration of all compounds has been determined by X-ray diffraction analysis of enantiomerically pure aldehyde 4a and bis-beta-lactam Ib-a. The remaining bicyclic lactams have been chemically correlated to compound 1b-alpha and their configurations assigned. Starting from enantiomerically pure 4-formyl-2-azetidinone 4b, sequential imine formation and ketene cycloaddition allowed the synthesis of differently substituted, optically pure cis,cis-C4,C4'-bis-beta-lactams If-i in good overall yields. C4,C4'-Bis-beta-lactams smoothly rearranged to fused trans,trans-bis-gamma-lactams 7 upon basic treatment (NaOMe/MeOH) in a totally stereoselective process. The presence of alkyl groups attached to the lactam nitrogen inhibits the rearrangement. Differently substituted (aryl and alkyl substituents in either rings) bicyclic p-lactam systems gave the selective opening of the ring with the aromatic substituent attached to the lactam nitrogen. Monocyclic 2-azetidinones 8 with an amino ester side chain at C4 are then obtained. The synthesis of trans,cis-C4,C4'-bis-beta-lactam Ij and trans,trans-C4,C4'-bis-beta-lactam 11 has also been effected in the racemic form. Compound Ij with a trans,cis stereochemistry rearranged to cis,trans-bis-gamma-lactam 7d in the presence of base while the trans,trans-bicycle 11 gave monocyclic 2-azetidinone 8c with an amino ester side chain. Finally, trans,trans-bis-gamma-lactam 11 can be synthesized in a single step from glyoxal diimine 3a employing an excess of lithium isovalerate. A reaction pathway to account for all the observed data is proposed.
• Synthesis of 4‐imidoyl‐, 4‐oxiranyl‐ and 4‐propargyloxyphenyl‐substituted β‐lactam building blocks
  作者：Sari Deketelaere、Gurkirat Kaur、Nicola Piens、Daan Deturck、Robin Depestel、Kristof Van Hecke、Christian V. Stevens、Vipan Kumar、Matthias D'hooghe

  DOI：10.1002/jhet.4597

  日期：2023.3

  In this study, the preparation of 4-imidoyl-, 4-oxiranyl-, and 4-propargyloxyphenyl-substituted β-lactams as versatile building blocks in heterocyclic chemistry was realized. Efforts were made to deploy these polyvalent compounds for ensuing cyclization reactions en route to new bi- or polycyclic frameworks, which, in the case of a 3-chloro-4-propargyloxyphenyl-β-lactam substrate, enabled the preparation

  在这项研究中，实现了 4-亚胺酰基-、4-环氧乙烷基-和 4-炔丙基氧基苯基取代的 β-内酰胺作为杂环化学中多功能构建单元的制备。人们努力部署这些多价化合物，以确保在形成新的双环或多环框架的过程中发生环化反应，在 3-chloro-4-propargyloxyphenyl-β-lactam 底物的情况下，能够制备出前所未有的 β-内酰胺融合的苯并三唑并恶唑烷支架。后一种多杂环的化学结构通过 X 射线分析明确确定。