3-(3-iodopropoxy)xanthen-9-one | 213891-02-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 3-(3-iodopropoxy)xanthen-9-one
• CAS: 213891-02-2
• 化学式: C₁₆H₁₃IO₃
• 分子量: 380.182
• InChiKey: WVDNKSHMQVWXLZ-UHFFFAOYSA-N

物化性质

• 熔点：
  119-121 °C
• 沸点：
  487.3±45.0 °C(Predicted)
• 密度：
  1.656±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-(3-iodopropoxy)xanthen-9-one 在 palladium on activated charcoal 氢气 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 20.0 ℃ 、101.33 kPa 条件下， 反应 12.0h， 生成 3-[3-(7-amino-1,2,3,4-tetrahydro-2-isoquinolyl)propoxy]xanthen-9-one
  参考文献：
  名称：

  Acetylcholinesterase Inhibitors:  SAR and Kinetic Studies on ω-[N-Methyl-N-(3-alkylcarbamoyloxyphenyl)methyl]aminoalkoxyaryl Derivatives

  摘要：

  In this work, we further investigated a class of carbamic cholinesterase inhibitors introduced in a previous paper (Rampa et al. J. Med. Chem. 1998, 41, 3976). Some new omega-[N-methyl-N-(3-alkylcarbamoyloxyphenyl)methyl]aminoalkoxyaryl analogues were designed, synthesized, and evaluated for their inhibitory activity against both acetyleholinesterase (AChE) and butyrylcholinesterase (BuChE). The structure of the lead compound (xanthostigmine) was systematically varied with the aim to optimize the different parts of the molecule. Moreover, such a structure-activity relationships (SAR) study was integrated with a kinetic analysis of the mechanism of AChE inhibition for two representative compounds. The structural modifications lead to a compound (12b) showing an IC50 value for the AChE inhibition of 0.32 +/- 0.09 nM and to a group of BuChE inhibitors also active at the nanomolar level, the most potent of which (15d) was characterized by an IC50 value of 3.3 +/- 0.4 nM. The kinetic analysis allowed for clarification of the role played by different molecular moieties with regard to the rate of AChE carbamoylation and the duration of inhibition. On the basis of the results presented here, it was concluded that the cholinesterase inhibitors of this class possess promising characteristics in view of a potential development as drugs for the treatment of Alzheimer's disease.

  DOI：

  10.1021/jm010914b
• 作为产物：
  描述：

  3-(3-chloropropoxy)xanthen-9-one 在 sodium iodide 作用下， 以 丁酮 为溶剂， 反应 4.0h， 以70%的产率得到3-(3-iodopropoxy)xanthen-9-one
  参考文献：
  名称：

  Acetylcholinesterase Inhibitors:  Synthesis and Structure−Activity Relationships of ω-[N-Methyl-N-(3-alkylcarbamoyloxyphenyl)- methyl]aminoalkoxyheteroaryl Derivatives

  摘要：

  Acetylcholinesterase (AChE) inhibitors are one of the most actively investigated classes of compounds in the search for an effective treatment of Alzheimer's disease. This work describes the synthesis, AChE inhibitory activity, and structure-activity relationships of some compounds related to a recently discovered series of AChE inhibitors: the omega-[N-methyl-N-(3-alkylcarbamoyloxyphenyl)methyl]aminoalkoxyxanthen-9-ones. The influence of structural variations on the inhibitory potency was carefully investigated by modifying different parts of the parent molecule, and a theoretical model of the binding of one representative compound to the enzyme was developed. The biological properties of the series were investigated in some detail by considering not only the activity on isolated enzyme but the selectivity with respect to butyrylcholinesterase (BuChE) and the in vitro inhibitory activity on rat cerebral cortex as well. Some of the newly synthesized derivatives, when tested on isolated and/or AChE-enriched rat brain cortex fraction, displayed a selective inhibitory activity and were more active than physostigmine. In particular, compound 13, an azaxanthone derivative, displayed the best rat cortex AChE inhibition (190-fold higher than physostigmine), as well as a high degree of enzyme selectivity (over 60-fold more selective for AChE than for BuChE). When tested in the isolated enzyme, compound 13 was less active, suggesting some differences either in drug availability/biotransformation or in the inhibitor-sensitive residues of the enzyme when biologically positioned in rat brain membranes.

  DOI：

  10.1021/jm9810046

文献信息

• Cholinesterase inhibitors: SAR and enzyme inhibitory activity of 3-[ω-(benzylmethylamino)alkoxy]xanthen-9-ones
  作者：Lorna Piazzi、Federica Belluti、Alessandra Bisi、Silvia Gobbi、Stefano Rizzo、Manuela Bartolini、Vincenza Andrisano、Maurizio Recanatini、Angela Rampa

  DOI：10.1016/j.bmc.2006.09.026

  日期：2007.1.1

  In this work, we further investigated a previously introduced class of cholinesterase inhibitors. The removal of the carbarnic function from the lead compound xanthostigmine led to a reversible cholinesterase inhibitors 3. Some new 3-[omega-(benzylmethylamino)alkoxy]xanthen-9-one analogs were designed, synthesized, and evaluated for their inhibitory activity against both acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). The length of the alkoxy chain of compound 3 was increased and different substituents were introduced. From the IC50 values, it clearly appears that the carbamic residue is crucial to obtain highly potent AChE inhibitors. On the other hand, peculiarity of these compounds is the high selectivity toward BuChE with respect to AChE, being compound 12 the most selective one (6000-fold). The development of selective BuChE inhibitors may be of great interest to clarify the physiological role of this enzyme and to provide novel therapeutics for various diseases. (c) 2006 Elsevier Ltd. All rights reserved.