4-cyano-N-[3,4-dioxo-2-ethoxy-cyclobut-1-enyl]-benzamide

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-cyano-N-[3,4-dioxo-2-ethoxy-cyclobut-1-enyl]-benzamide
• 英文别名: 4-cyano-N-(2-ethoxy-3,4-dioxocyclobuten-1-yl)benzamide
• 化学式: C₁₄H₁₀N₂O₄
• 分子量: 270.244
• InChiKey: NHGSLQGXBPKRMP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  96.3
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (±)-3,3-二甲基-2-丁胺 、 4-cyano-N-[3,4-dioxo-2-ethoxy-cyclobut-1-enyl]-benzamide 以 乙腈 为溶剂， 反应 2.0h， 以96%的产率得到4-cyano-N-[2-(3,3-dimethylbutan-2-ylamino)-3,4-dioxocyclobuten-1-yl]benzamide
  参考文献：
  名称：

  Design and SAR of Novel Potassium Channel Openers Targeted for Urge Urinary Incontinence. 2. Selective and Potent Benzylamino Cyclobutenediones

  摘要：

  A novel series of benzylamine, potassium channel openers (KCOs) is presented as part of our program toward designing new, bladder-selective compounds for the treatment of urge urinary incontinence (UUI). We have found that the in vitro potency of (R)-4-[3,4-dioxo-2-(1,2,2-trimethyl-propylamino)-cyclobut-1-enylamino]3-ethyl-benzonitrile 1 in the relaxation of precontracted rat detrusor strips can also be obtained with cyanobenzylamine derivative 4 (IC50 = 0.29 mu M) (Figure 3). Addition of a 2-Cl substituted benzylamine moiety and changing the alkylamino substituent of 4 to a t-Bu amine gives 31 (IC50 = 0.14 mu M)-a compound with similar in vitro potency as 4 as well as relaxant activity on bladder smooth muscle in vivo when administered orally (31, ED50 = 3 mg/kg) in a rodent model of bladder instability. Further modifications, particularly the replacement of the t-Bu amino substituent with a tert-amylamine, gave a similarly active compound 60 (IC50 = 0.10 mu M) which shows excellent in vivo efficacy (ED50 = 0.6 mg/kg). Moreover, 60, 3-(2,4-dichloro-6-methyl-benzylamino)-4- 1,1-dimethylpropylamino)-cyclobut-3-ene-1,2-dione (WAY-151616), shows excellent tissue selectivity for bladder K channels over arterial tissue (60, MAP ED20 = 100 mg/kg; selectivity: MAP ED20/ bladder ED50 = 166). Other manipulations of the benzylamino cyclobutenediones, acylation of the benzylamine, conversion of the benzylamine substituent to a benzamide, homologation of the benzylamine to a phenethylamine, and incorporation of a methyl group at the benzyl carbon, all led to substantial loss of in vitro activity, although some in vivo activity was maintained in the acylated analogues. Compound 60 represents an attractive candidate for development in the treatment of UUI.

  DOI：

  10.1021/jm9905108
• 作为产物：
  描述：

  4-氰基苯甲酰胺 、 方酸二乙酯 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 以28%的产率得到4-cyano-N-[3,4-dioxo-2-ethoxy-cyclobut-1-enyl]-benzamide
  参考文献：
  名称：

  Design and SAR of Novel Potassium Channel Openers Targeted for Urge Urinary Incontinence. 2. Selective and Potent Benzylamino Cyclobutenediones

  摘要：

  A novel series of benzylamine, potassium channel openers (KCOs) is presented as part of our program toward designing new, bladder-selective compounds for the treatment of urge urinary incontinence (UUI). We have found that the in vitro potency of (R)-4-[3,4-dioxo-2-(1,2,2-trimethyl-propylamino)-cyclobut-1-enylamino]3-ethyl-benzonitrile 1 in the relaxation of precontracted rat detrusor strips can also be obtained with cyanobenzylamine derivative 4 (IC50 = 0.29 mu M) (Figure 3). Addition of a 2-Cl substituted benzylamine moiety and changing the alkylamino substituent of 4 to a t-Bu amine gives 31 (IC50 = 0.14 mu M)-a compound with similar in vitro potency as 4 as well as relaxant activity on bladder smooth muscle in vivo when administered orally (31, ED50 = 3 mg/kg) in a rodent model of bladder instability. Further modifications, particularly the replacement of the t-Bu amino substituent with a tert-amylamine, gave a similarly active compound 60 (IC50 = 0.10 mu M) which shows excellent in vivo efficacy (ED50 = 0.6 mg/kg). Moreover, 60, 3-(2,4-dichloro-6-methyl-benzylamino)-4- 1,1-dimethylpropylamino)-cyclobut-3-ene-1,2-dione (WAY-151616), shows excellent tissue selectivity for bladder K channels over arterial tissue (60, MAP ED20 = 100 mg/kg; selectivity: MAP ED20/ bladder ED50 = 166). Other manipulations of the benzylamino cyclobutenediones, acylation of the benzylamine, conversion of the benzylamine substituent to a benzamide, homologation of the benzylamine to a phenethylamine, and incorporation of a methyl group at the benzyl carbon, all led to substantial loss of in vitro activity, although some in vivo activity was maintained in the acylated analogues. Compound 60 represents an attractive candidate for development in the treatment of UUI.

  DOI：

  10.1021/jm9905108

文献信息

• Design and SAR of Novel Potassium Channel Openers Targeted for Urge Urinary Incontinence. 2. Selective and Potent Benzylamino Cyclobutenediones
  作者：Adam M. Gilbert、Madelene M. Antane、Thomas M. Argentieri、John A. Butera、Gerardo D. Francisco、Chris Freeden、Eric G. Gundersen、Russell F. Graceffa、David Herbst、Bradford H. Hirth、Joseph R. Lennox、Geraldine McFarlane、N. Wesley Norton、Dominick Quagliato、Jeffrey H. Sheldon、Dawn Warga、Alexandra Wojdan、Morgan Woods

  DOI：10.1021/jm9905108

  日期：2000.3.1

  A novel series of benzylamine, potassium channel openers (KCOs) is presented as part of our program toward designing new, bladder-selective compounds for the treatment of urge urinary incontinence (UUI). We have found that the in vitro potency of (R)-4-[3,4-dioxo-2-(1,2,2-trimethyl-propylamino)-cyclobut-1-enylamino]3-ethyl-benzonitrile 1 in the relaxation of precontracted rat detrusor strips can also be obtained with cyanobenzylamine derivative 4 (IC50 = 0.29 mu M) (Figure 3). Addition of a 2-Cl substituted benzylamine moiety and changing the alkylamino substituent of 4 to a t-Bu amine gives 31 (IC50 = 0.14 mu M)-a compound with similar in vitro potency as 4 as well as relaxant activity on bladder smooth muscle in vivo when administered orally (31, ED50 = 3 mg/kg) in a rodent model of bladder instability. Further modifications, particularly the replacement of the t-Bu amino substituent with a tert-amylamine, gave a similarly active compound 60 (IC50 = 0.10 mu M) which shows excellent in vivo efficacy (ED50 = 0.6 mg/kg). Moreover, 60, 3-(2,4-dichloro-6-methyl-benzylamino)-4- 1,1-dimethylpropylamino)-cyclobut-3-ene-1,2-dione (WAY-151616), shows excellent tissue selectivity for bladder K channels over arterial tissue (60, MAP ED20 = 100 mg/kg; selectivity: MAP ED20/ bladder ED50 = 166). Other manipulations of the benzylamino cyclobutenediones, acylation of the benzylamine, conversion of the benzylamine substituent to a benzamide, homologation of the benzylamine to a phenethylamine, and incorporation of a methyl group at the benzyl carbon, all led to substantial loss of in vitro activity, although some in vivo activity was maintained in the acylated analogues. Compound 60 represents an attractive candidate for development in the treatment of UUI.