(2R,5S)-7-ethoxycarbonyl-2-phenyl-1-aza-3-oxa-lbicyclo<3.3.0>octan-8-one | 254909-27-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: (2R,5S)-7-ethoxycarbonyl-2-phenyl-1-aza-3-oxa-lbicyclo<3.3.0>octan-8-one
• 英文别名: ethyl (2R,5S,7RS)-8-oxo-2-phenyl-3-oxa-1-azabicyclo[3.3.0]octane-7-carboxylate；(2R,5S)-1-aza-7-ethyloxycarbonyl-3-oxa-8-oxo-2-phenylbicyclo[3.3.0]octane；ethyl (3R,7aS)-5-oxo-3-phenyl-3,6,7,7a-tetrahydro-1H-pyrrolo[1,2-c][1,3]oxazole-6-carboxylate
• CAS: 254909-27-8
• 化学式: C₁₅H₁₇NO₄
• 分子量: 275.304
• InChiKey: VOCWBPFZTXBBAT-HFUMIRBISA-N

物化性质

• 沸点：
  441.9±45.0 °C(predicted)
• 密度：
  1.28±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  55.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2R,5S)-7-ethoxycarbonyl-2-phenyl-1-aza-3-oxa-lbicyclo<3.3.0>octan-8-one 在 cerium(III) chloride heptahydrate 、 氧气 作用下， 以 异丙醇 为溶剂， 生成 (2R,5S,7RS)-7-chloro-7-ethoxycarbonyl-8-oxo-2-phenyl-1-aza-3-oxabicyclo[3.3.0] octane
  参考文献：
  名称：

  Mimics of pramanicin derived from pyroglutamic acid and their antibacterial activity

  摘要：

  单羟基吡咯烷酮和二羟基吡咯烷酮可通过直接氧化来自吡咯戊酸酯衍生的双环内酯制备，具有高对映选择性，这些化合物可以通过格氏试剂加到侧链的Weinreb酰胺上，进一步转化为保护或非保护形式的酰羟基吡咯烷酮。

  DOI：

  10.1039/c6ob02828d
• 作为产物：
  描述：

  (+)-(3R,7aS)-四氢-3-苯基-3H,5H-吡咯并[1,2-c]噁唑-5-酮 、 碳酸二乙酯 在 sodium hydride 作用下， 以 甲苯 为溶剂， 以72%的产率得到(2R,5S)-7-ethoxycarbonyl-2-phenyl-1-aza-3-oxa-lbicyclo<3.3.0>octan-8-one
  参考文献：
  名称：

  A concise approach to functionalised, homochiral pyrrolidinones

  摘要：

  Acylation of O,N-acetal 1 gives excellent yields of the C-7 substituted products 2a,b. Alkylation of 2a under mild conditions gives high yields of the exo- 3 and endo- 4 substituted products in varying ratios, depending on the alkylating agent. The unsaturated derivative 8 reacts in high yields under mild conditions with dienes and 1,3-dipoles to give the corresponding cycloadducts. Elaboration of these compounds by acidic deprotection to substituted pyroglutaminols, and oxidation to the corresponding pyroglutamates, can be readily achieved.

  DOI：

  10.1016/0957-4166(95)00007-c

文献信息

• Spirocyclic systems derived from pyroglutamic acid
  作者：Andrew R. Cowley、Thomas J. Hill、Petr Kocis、Mark G. Moloney、Robert D. Stevenson、Amber L. Thompson

  DOI：10.1039/c1ob05708a

  日期：——

  The synthesis and likely conformational structure of rigid spirocyclic bislactams and lactam-lactones derived from pyroglutamic acid, and their suitability as lead structures for applications in drug development programmes using cheminformatic analysis, has been investgated.

  来源于焦谷氨酸的刚性螺环双内酰胺和内酰胺-内酯的合成及其可能的构象结构，以及它们作为药物研发项目中引导结构的可行性，已通过化学信息学分析进行了研究。
• Synthetic Studies Towards the Core Structure of Nakadomarin A by a Thioamide-Based Strategy
  作者：Jai K. Chavda、Panayiotis A. Procopiou、Peter N. Horton、Simon J. Coles、Michael J. Porter

  DOI：10.1002/ejoc.201301063

  日期：2014.1

  The tricyclic BCD substructure of the marine natural product nakadomarin A has been synthesised. The strategy utilised a key carbon–carbon bond-forming reaction between a furan and an N-acyliminium ion derived from a secondary thiolactam. In addition, a novel three-component coupling reaction between a thioamide, an allylic bromide and an isocyanate, leading to the establishment of two new stereogenic

  已合成海洋天然产物 nakadomarin A 的三环 BCD 亚结构。该策略利用了呋喃和衍生自二级硫内酰胺的 N-酰基胺离子之间的关键碳-碳键形成反应。此外，还报道了硫代酰胺、烯丙基溴和异氰酸酯之间的新型三组分偶联反应，导致建立两个新的立体中心。通过使用硫代酰胺的独特化学，已经实现了 nakadomarin A 计划全合成的两个关键步骤。碳环 B 环的形成可以通过呋喃对硫内酰胺衍生的亚胺离子的亲核攻击来实现，并且关键的季铵中心可以通过新型的三组分偶联反应建立。
• Stereoselective synthesis of conformationally constrained ω-amino acid analogues from pyroglutamic acid
  作者：Emilie L. Bentz、Rajesh Goswami、Mark G. Moloney、Susan M. Westaway

  DOI：10.1039/b503994k

  日期：——

  Bicyclic lactams derived from pyroglutamic acid provide a useful scaffold for synthesis of conformationally restricted analogues of lysine, ornithine and glutamine, as well as an Ala-Ala dipeptide analogue. Amino alcohol and carboxylic acid derivatives are accessible from a common intermediate. In this strategy, the bicyclic lactam system not only controls, but also facilitates the determination of

  衍生自焦谷氨酸的双环内酰胺为合成赖氨酸，鸟氨酸和谷氨酰胺的构象受限的类似物以及Ala-Ala二肽类似物提供了有用的支架。氨基醇和羧酸衍生物可从常见的中间体获得。在这种策略中，双环内酰胺系统不仅控制，而且还有助于确定合成中间体的立体化学。
• Functionalised pyrrolidinones derived from (S)-pyroglutamic acid
  作者：Mark J Beard、Jonathan H Bailey、David T Cherry、Mark G Moloney、Sung Bo Shim、Kathryn A Statham、Mark J Bamford、R Brian Lamont

  DOI：10.1016/0040-4020(96)00047-6

  日期：1996.3

  derived from bicyclic lactams 2a-c, prepared from (S)-pyroglutamic acid 1a, and subsequent reaction with a range of electrophiles, is reported. Exo-diastereoselectivity is generally favoured. The deprotection of some of these adducts to give functionalised hydroxymethylpyrrolidinones is readily achieved by simple hemiaminal ether cleavage under acidic conditions.

  报道了由（S）-焦谷氨酸1a制备的双环内酰胺2a-c衍生的内酰胺烯酸酯的产生，以及随后与一系列亲电试剂的反应。Exo-非对映选择性通常是有利的。通过在酸性条件下简单的半胺醚裂解，可以容易地实现其中一些加合物的脱保护，以得到官能化的羟甲基吡咯烷酮。
• Stereocontrolled spirocyclic bislactams derived from pyroglutamic acid
  作者：Thomas J. Hill、Petr Kocis、Mark G. Moloney

  DOI：10.1016/j.tetlet.2005.12.068

  日期：2006.2

  The synthesis of rigid spirocyclic bislactams derived from pyroglutamic acid has been established. (c) 2005 Elsevier Ltd. All rights reserved.