有机化学 ›› 2023, Vol. 43 ›› Issue (9): 3216-3225.DOI: 10.6023/cjoc202303019 上一篇    下一篇

研究论文

钯催化立体选择性合成硝基烷类β-碳糖苷

王兢睿, 冯永奎, 王能中, 黄年玉*(), 姚辉*()   

  1. 三峡大学生物与制药学院 中国轻工业功能酵母重点实验室 天然产物研究与利用湖北省重点实验室 湖北宜昌 443002
  • 收稿日期:2023-03-14 修回日期:2023-05-08 发布日期:2023-05-29
  • 作者简介: 共同第一作者.
  • 基金资助:
    国家自然科学基金(22207063); 高等学校学科创新引智计划(111计划); 高等学校学科创新引智计划(D20015); 湖北省自然科学基金(2022CFB838); 湖北省教育厅(D20221204); 湖北省教育厅(Q20221212)

Pd-Catalyzed Stereoselective Synthesis of Nitroalkyl β-C-Glycosides

Jingrui Wang, Yongkui Feng, Nengzhong Wang, Nianyu Huang(), Hui Yao()   

  1. Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002
  • Received:2023-03-14 Revised:2023-05-08 Published:2023-05-29
  • Contact: E-mail: huangny@ctgu.edu.cn;yaohui@ctgu.edu.cn
  • About author: These authors contributed equally to this work.
  • Supported by:
    National Natural Science Foundation of China(22207063); Programme of Introducing Talents of Discipline to Universities (111 Project); Programme of Introducing Talents of Discipline to Universities(D20015); Hubei Provincial Natural Science Foundation(2022CFB838); Educational Commission of Hubei Province(D20221204); Educational Commission of Hubei Province(Q20221212)

碳糖苷因其优异的生理活性及耐水解/酶解特性, 在医学和生物学领域的研究中受到越来越多的关注, 但合成过程中仍面临着立体选择性的控制等挑战. 报道了一种3,4-O-碳酸酯烯糖和硝基化合物在双乙酰丙酮钯和1,4-双(二苯膦)丁烷(DPPB)配体的催化作用下, 室温反应得到具有高立体选择性的β-碳糖苷的方法, 且已由核磁共振(NMR)、高分辨质谱(HRMS)以及X射线单晶衍射等方法确定目标化合物的结构. 该方法具有广泛的底物范围, 对含吸电子基或供电子基的硝基烷类化合物都有很好的兼容性, 能以高产率得到单一β构型的碳糖苷, 为快速构建碳苷化合物库提供了可靠方法.

关键词: 烯糖, 立体选择性, 半乳糖碳苷, 碳糖苷化反应, 钯催化

C-Glycosides have attracted more and more attention in the field of medicine and biology due to their excellent physiological activities and stability to hydrolysis/enzymolysis. However, the challenges of stereoselective control are still high during the synthesis process. In this paper, a method for preparing β-C-glycosides with high stereoselectivity through the reaction of 3,4-O-carbonate-D-galactal and nitroalkane with Pd(acac)2 and 1,4-bis(diphenylphosphino)butane (DPPB) ligand at room temperature has been reported. The structures of the target compounds have been determined by nuclear magnetic resonance spectroscopy (NMR), high-resolution mass spectra (HRMS) and X-ray single crystal diffraction. The method has a wide range of substrates, and has good compatibility for both electron-withdrawing and electron-donating nitroalkanes. Single β-C-glycosides were obtained with high yields, which provide a reliable method for the rapid construction of C-glycoside libraries.

Key words: glycals, stereoselectivity, C-galactosides, C-glycosylation, palladium catalysis