有机化学 ›› 2019, Vol. 39 ›› Issue (10): 2808-2812.DOI: 10.6023/cjoc201904033 上一篇    下一篇

所属专题: 元素有机化学合辑2018-2019

研究论文

碘-二甲基亚砜促进新型四环噻唑并[3',2':2,3]吡啶并[4,5-d]吡啶并[1,2-a]嘧啶酮类衍生物的合成

徐姣ab, 张丽宏b, 张美琦b, 刘秀波b, 马伟ab*(), 唐益鑫c, 王道林c*()   

  1. a 东北林业大学林木遗传育种国家重点实验室 哈尔滨 150040
    b 黑龙江中医药大学药学院 哈尔滨 150040
    c 渤海大学化学化工学院 锦州 121003
  • 收稿日期:2019-04-12 修回日期:2019-05-26 发布日期:2019-06-12
  • 通讯作者: 马伟,王道林 E-mail:mawei@hljucm.net;wangdaolin@sina.com

Iodine-Dimethyl sulfoxide Promoted Synthesis of Novel TetracyclicThiazolo[3',2':2,3]pyrido[4,5-d]pyrido[1,2-a]pyrimidinones

Xu Jiaoab, Zhang Lihongb, Zhang Meiqib, Liu Xiubob, Ma Weiab*(), Tang Yixinc, Wang Daolinc*()   

  1. a State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040
    b College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040
    c College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121003
  • Received:2019-04-12 Revised:2019-05-26 Published:2019-06-12
  • Contact: Ma Wei,Wang Daolin E-mail:mawei@hljucm.net;wangdaolin@sina.com

介绍了在碘-二甲基亚砜(I2-DMSO)促进作用下, 通过Pictet-Spengler反应合成噻唑并[3',2':2,3]吡啶并[4,5-d]吡啶并[1,2-a]嘧啶酮(5)衍生物的合成方法. 该反应的关键中间体2-(3-氨基-5-苯氨基噻唑-2-基)-4H-吡啶[1,2-a]嘧啶-4-酮(3), 由2-氯甲基-4H-吡啶[1,2-a]嘧啶-4-酮(1)与N-苯基-N'-氰基-咪唑硫代碳酸钾(2)通过Thorpe-Ziegler异构化反应制得. 该合成方法反应条件温和, 操作简单, 收率高.

关键词: 吡啶[1,2-a]嘧啶, 噻唑并吡啶, Thorpe-Ziegler异构化, Pictet-Spengler反应, I2-DMSO

An iodine-dimethyl sulfoxide (I2-DMSO) promoted efficient method is described for the synthesis of thiazolo- [3',2':2,3]pyrido[4,5-d]pyrido[1,2-a]pyrimidin-5-ones (5) via Pictet-Spengler cyclization. The key intermediate, 2-(3-amino- 5-phenylaminothiazolo-2-yl)-4H-pyrido[1,2-a]pyrimidin-4-one (3), was readily prepared from 2-chloromethyl-4H-pyrido- [1,2-a]pyrimidin-4-one (1) and potassium N-phenyl-N'-cyano-imido-thiocarbonate (2) by Thorpe-Ziegler isomerization. The novel synthetic method offers the advantage of mild reaction conditions, operational simplicity and higher yields.

Key words: pyrido[1,2-a]pyrimidine, thiazolopyridine, Thorpe-Ziegler isomerization, Pictet-Spengler reaction, I2-DMSO