(S)-allopseudoecgonine methyl ester | 50373-09-6

• 分子结构分类: 有机化合物 - 生物碱及其衍生物 - 托烷生物碱
• 英文名称: (S)-allopseudoecgonine methyl ester
• 英文别名: methyl (1S,2R,3S,5R)-3-hydroxy-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate
• CAS: 50373-09-6
• 化学式: C₁₀H₁₇NO₃
• 分子量: 199.25
• InChiKey: QIQNNBXHAYSQRY-RYPBNFRJSA-N

物化性质

• 沸点：
  305.8±37.0 °C(Predicted)
• 密度：
  1.181±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  49.8
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (S)-allopseudoecgonine methyl ester 在 palladium on activated charcoal 盐酸 、 水 、 氢气 、 碳酸氢钠 、 对甲苯磺酸 作用下， 以 甲醇 、 氯仿 、 乙酸乙酯 、 苯 为溶剂， 50.0 ℃ 、275.79 kPa 条件下， 反应 45.5h， 生成 S-(+)-2β-carbo(4-isothiocyanatophenyl)ethoxy-3α-(bis[4-fluorophenyl]methoxy)tropane
  参考文献：
  名称：

  Structure−Activity Relationship Comparison of (S)-2β-Substituted 3α-(Bis[4-fluorophenyl]methoxy)tropanes and (R)-2β-Substituted 3β-(3,4-Dichlorophenyl)tropanes at the Dopamine Transporter

  摘要：

  Extensive structure-activity relationships at the dopamine transporter (DAT) have been developed around two classes of tropane-based ligands. Opposing stereoselectivity and divergent structural requirements for optimal DAT binding suggest that these tropane-based DAT inhibitors may not access identical binding domains. To further investigate this hypothesis, a series of (S)-2beta-carboalkoxy-3alpha-(bis[4-fluorophenyl]methoxy)tropanes (11a-f, 13-16) and their identically (R)-2beta-substituted 3beta-(3,4-dichlorophenyl)tropanes (3, 5a-d) were prepared and evaluated for binding at the DAT and for inhibition of [H-3]dopamine uptake in rat brain. These studies showed that most of the identically 2-carboalkoxy-substituted analogues, within the two classes of compounds, bind with high affinity to DAT (K-i = 5.5 - 100 nM), albeit with opposite stereochemistry. However, the larger azido- (15) and isothiocyanato- (16) (S)-2beta-carbophenylethoxy-3alpha-(bis [4-fluorophenyl] methoxy)tropanes demonstrated a significant decrease in DAT binding potency (IC50 = 210 and 537 nM, respectively), suggesting that the DAT does not tolerate 2-position steric bulk in the benztropine class, as it does with the 2-substituted 3-aryltropanes. In addition, binding affinities at the serotonin transporter, norepinephrine transporter, and muscarinic receptors were evaluated and compared for compounds 2, 3, 11a-e, and 13. Together, the binding profiles across these systems demonstrated significant differences between these two classes of tropane-based ligands, which may be exploited toward the discovery of a cocaine-abuse pharmacotherapeutic.

  DOI：

  10.1021/jm0300375
• 作为产物：
  描述：

  methyl 8-methyl-3-oxo-8-azabicyclo<3.2.1>octan-2-carboxylate 在 sodium tetrahydroborate 作用下， 生成 (S)-allopseudoecgonine methyl ester
  参考文献：
  名称：

  用于肽结构功能研究的Fmoc保护的基于托烷的氨基酸

  摘要：

  已经制备了来自烷烃生物碱核的环状氨基酸，并将其掺入合成肽中。这些构象受限的β-氨基酸在开发生物活性肽的新型合成类似物方面具有相当大的潜力。

  DOI：

  10.1016/s0040-4039(97)00500-5

文献信息

• Synthesis and ligand binding of cocaine isomers at the cocaine receptor
  作者：F. Ivy Carroll、Anita H. Lewin、Philip Abraham、Karol Parham、John W. Boja、Michael J. Kuhar

  DOI：10.1021/jm00107a003

  日期：1991.3

  transporter has been found to be stereoselective. Thus, the seven possible stereoisomers of (-)-cocaine have been synthesized and found to inhibit [3H]-2 beta-carbomethoxy-3 beta-(4-fluoro-phenyl)tropane [( 3H]WIN 35,428) with potencies ranging from 1/60 to 1/600 of that of (-)-cocaine. The synthesis and characterization of all new compounds is presented.

  已经发现多巴胺转运蛋白上的可卡因结合位点是立体选择性的。因此，已经合成了（-）-可卡因的七个可能的立体异构体，并发现其抑制[3H] -2β-羰甲氧基-3β-（4-氟-苯基）托烷[（3H] WIN 35,428）的能力范围为（-）-可卡因的1/60至1/600。介绍了所有新化合物的合成和表征。
• The Three-Dimensional Structures of the Cocaines. II. Racemic Allococaine and Racemic Allopseudococaine
  作者：STEPHEN P. FINDLAY

  DOI：10.1021/jo01092a040

  日期：1959.10
• Synthesis of Tropane Alkaloids via Enantioselective Deprotonation of Tropinone
  作者：Marek Majewski、Ryszard Lazny

  DOI：10.1021/jo00123a018

  日期：1995.9

  Enantioselective deprotonation of tropinone 2 with chiral lithium amides 5a and 6a, in the presence of LiCl, gave tropinone lithium enolate in up to 95% ee. The C-2 symmetrical lithium amide 6a worked best when it was generated in situ from the hydrochloride salt of the corresponding amine 6b. The deprotonation was used as the key step in synthesis of tropane alkaloids: ent-anhydroecgonine, ent-knightinol, KD-B, chalcostrobamine, ent-isobellendine, and ent-darlingine. The absolute configuration of natural benzyltropane and pyranotropane alkaloids was established (by correlation with anhydroecgonine) to be 'cocaine-like' i.e., the side chain originates at C-2 of the tropane ring system in all cases.
• Enantioselective synthesis of S-(+)-2β-carboalkoxy-3α-[bis(4-fluorophenyl)methoxy]tropanes as novel probes for the dopamine transporter
  作者：Mu-Fa Zou、Gregory E Agoston、Yuri Belov、Theresa Kopajtic、Jonathan L Katz、Amy Hauck Newman

  DOI：10.1016/s0960-894x(02)00155-5

  日期：2002.5

  Synthesis of a series of pure S-(+)-2beta-carboalkoxy-3alpha-[bis(4-fluotophenyl)metlioxy]tropanes (>99% ee) was achieved by employing a chiral amine-induced asymmetric reaction of tropinone with methyl cyanoformate as the key step. In this series, all of the S-(+)-enantiomers were 2-fold more potent than their racemic mixtures and all displayed high-affinity binding for DAT (K-i - 13-40 nM). These data support previous findings of significant divergence in structural requirements for high-affinity DAT binding among tropane-based inhibitors. Furthermore, the 2-substituent in the 3alpha-[bis(4-fluorophenyl)methoxy]tropane series is well tolerated at the DAT but not at SERT (K-i = 690-2040 nM), or muscarinic M-1 receptors (K-i - 133-4380 nM) resulting in highly selective DAT ligands that may provide new leads toward a cocaine-abuse therapeutic. (C) 2002 Elsevier Science Ltd. All rights reserved.
• The Discovery of an Unusually Selective and Novel Cocaine Analog: Difluoropine. Synthesis and Inhibition of Binding at Cocaine Recognition Sites
  作者：Peter C. Meltzer、Anna. Y. Liang、Bertha. K. Madras

  DOI：10.1021/jm00039a014

  日期：1994.6

  Cocaine is a stimulant drug with a high abuse liability. Although it inhibits several monamine transporters in the mammalian brain, its primary mechanism of action has been ascribed to its inhibition of the dopamine transporter. The synthesis, characterization, and receptor binding properties of all eight isomers of a unique tropane analog, 2-carbomethoxy-3-[bis(4-fluorophenyl)methoxy]tropane is described. In addition, we report that the S-enantiomer, (S)-(+)-2 beta-carbomethoxy-3 alpha-[bis(4-fluorophenyl)methoxy]tropane, Difluoropine, is a potent (IC50 10.9 nM) and selective (324 [DA/5HT]) ligand for the dopamine transporter.