(3R,4S)-N-t-butoxycarbonyl-3,4-methano-2-pyrrolidone | 1449741-31-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: (3R,4S)-N-t-butoxycarbonyl-3,4-methano-2-pyrrolidone
• 英文别名: tert-butyl (1R,5S)-2-oxo-3-azabicyclo[3.1.0]hexane-3-carboxylate
• CAS: 1449741-31-4
• 化学式: C₁₀H₁₅NO₃
• 分子量: 197.234
• InChiKey: VBGQOUJGLIUFMW-RNFRBKRXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  46.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (3R,4S)-N-t-butoxycarbonyl-3,4-methano-2-pyrrolidone 在 三氟乙酸 、 盐酸 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 12.5h， 以39%的产率得到cis-(-)-2-aminomethylcyclopropanecarboxylic acid hydrochloride
  参考文献：
  名称：

  Cyclopropane-based conformational restriction of GABA by a stereochemical diversity-oriented strategy: Identification of an efficient lead for potent inhibitors of GABA transports

  摘要：

  A series of cyclopropane-based conformationally restricted gamma-aminobutyric acid (GABA) analogs with stereochemical diversity, that is, the trans- and cis-2,3-methano analogs Ia and Ib and their enantiomers ent-Ia and ent-Ib, and also the trans- and cis-3,4-methano analogs IIa and IIb and their enantiomers ent-IIa and ent-Iib, were synthesized from the chiral cyclopropane units Type-a and Type-b that we developed. These analogs were systematically evaluated with four GABA transporter (GAT) subtypes. The trans-3,4-methano analog IIa had inhibitory effects on GAT3 (IC50 = 23.9 mu M) and betaine-GABA transporter1 (5.48 mu M), indicating its potential as an effective lead compound for the development of potent GAT inhibitors due to its hydrophilic and low molecular weight properties and excellent ligand efficiency. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2013.06.063
• 作为产物：
  描述：

  (1S,2R)-2-benzyloxymethyl-1-formylcyclopropane 在 palladium on activated charcoal chromium(VI) oxide 、 sodium tetrahydroborate 、 sodium azide 、 硫酸 、 水 、 氢气 、 碳酸氢钠 、 三乙胺 、 tin(ll) chloride 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 0.5h， 生成 (3R,4S)-N-t-butoxycarbonyl-3,4-methano-2-pyrrolidone
  参考文献：
  名称：

  Synthesis of optically active cis- and trans-1,2-disubstituted cyclopropane derivatives by the Simmons-Smith reaction of allyl alcohol derivatives derived from (R)-2,3-O-isopropylideneglyceraldehyde

  摘要：

  The Simmons-Smith reactions of Z- and E-allyl alcohol derivatives 6 derived from (R)-2,3-O-isopropylideneglyceraldehyde (5) were used for the synthesis of optically active cis- and trans-1,2 disubstituted cyclopropane derivatives. Reaction of 6 with diethyl zinc and diiodomethane gave cyclopropane derivatives 7 in 84% to quantitative yields with 35 to approximate to 100% des. Identical facial selectivities toward the double bonds, Ire-asi for Z-6 and 1re-2re for E-6, were observed in the cyclopropanations. The diastereoselectivity was dependent on the protecting group on the terminal allylic oxygen (R of 6, TBDPS > MOM > Bn) and on the stereochemistry of the double bond (Z > E). For TBDPS ethers Z- and E-6c, cis- and trans-7c were obtained as single diastereomers respectively. It was clearly demonstrated that the stereoselectivity of the cyclopropanation is controlled by the directing effect of the allylic oxygen (O-1) of the dioxolane ring which coordinates to the reagent. The terminal allylic oxygen (O-2) lowered the diastereoselectivity This reaction was applied to the synthesis of optically active cyclopropane analogs of gamma-aminobutyric acid (GABA) 18, 22, and ent-22.

  DOI：

  10.1021/jo00080a017