有机化学 ›› 2020, Vol. 40 ›› Issue (5): 1281-1289.DOI: 10.6023/cjoc201912002 上一篇    下一篇

所属专题: 有机光催化虚拟合辑

研究论文

基于光氧化反应的1-苯甲酰基-3,4-二氢异喹啉类生物碱Nelumstemine和Longifolonine的首次全合成

黄永康a, 解文静a, 罗永强a, 范琪琦a, 朱星亮a, 刘世领b, 施小新a   

  1. a 华东理工大学药学院 制药工程与过程化学教育部工程研究中心 上海 200237;
    b 青平药业有限公司 上海 201710
  • 收稿日期:2019-12-02 修回日期:2020-01-10 发布日期:2020-02-15
  • 通讯作者: 刘世领, 施小新 E-mail:xxshi@ecust.edu.cn;liushiling@tenrypharm.com
  • 基金资助:
    国家自然科学基金(Nos.20972048,20172015)资助项目.

First Total Syntheses of 1-Benzoyl-3,4-dihydroisoquinoline Alkaloids Nelumstemine and Longifolonine Based on the Photo-oxidation

Huang Yongkanga, Xie Wenjinga, Luo Yongqianga, Fan Qiqia, Zhu Xinglianga, Liu Shilingb, Shi Xiaoxina   

  1. a Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237;
    b Qingping Pharmaceutical Company Limited, Shanghai 201710
  • Received:2019-12-02 Revised:2020-01-10 Published:2020-02-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 20972048, 20172015).

研究了1-苯甲酰基-3,4-二氢异喹啉生物碱的一条新的合成路线.以3,4-二甲氧基苯甲醛为起始原料,通过6步反应,以50%的总收率首次全合成得到生物碱Nelumstemine;另外,以香兰醛为起始原料,通过9步反应,以35%的总收率首次全合成得到生物碱Longifolonine.上述全合成的关键步骤为,可见光照射下1-苄基-3,4-二氢异喹啉在室温下被空气氧化为1-苯甲酰基-3,4-二氢异喹啉的反应,并对此温和的光化学反应进行了详细研究.

关键词: 苯甲酰基二氢异喹啉生物碱, 光氧化, Nelumstemine, Longifolonine

A novel synthetic route for the total syntheses of 1-benzoyl-3,4-dihydroisoquinoline alkaloids was developed. Nelumstemine was synthesized for the first time via 6 steps in 50% overall yield starting from 3,4-dimethoxybenzaldehyde, and longifolonine was also synthesized for the first time via 9 steps in 35% overall yield starting from vanillin. The key step of these total syntheses is photo-oxidation of 1-benzyl-3,4-dihydroisoquinolines to 1-benzoyl-3,4-dihydroisoquinolines by air under visible-light irradiation at room temperature. The unique mild photo-oxidation of 1-benzyl-3,4-dihydro-isoquinolines has been studied in detail.

Key words: benzoyl dihydroisoquinoline alkaloids, photo-oxygenation, nelumstemine, longifolonine