Chinese Journal of Organic Chemistry ›› 2025, Vol. 45 ›› Issue (3): 977-987.DOI: 10.6023/cjoc202409012 Previous Articles     Next Articles

ARTICLES

Kuroshine类生物碱的合成研究

文国恩a, 谷硕a, 何海兵a, 高栓虎a,b,*()   

  1. a 华东师范大学化学与分子工程学院 石油化工分子转化与过程全国重点实验室 上海市绿色化学与化工过程绿色化重点实验室 上海 200062
    b 上海市分子智造前沿科学基地 上海 200062
  • 收稿日期:2024-09-11 修回日期:2024-10-16 发布日期:2024-12-05
  • 基金资助:
    国家高新技术研究发展计划(2022YFC2804201); 国家自然科学基金(22225105); 上海市科学技术委员会(22JC1401101)

Synthetic Study of Kuroshine Alkaloids

Guoen Wena, Shuo Gua, Haibing Hea, Shuanhu Gaoa,b()   

  1. a Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062
    b Shanghai Frontiers Science Center of Molecule Intelligent Syntheses, Shanghai 200062
  • Received:2024-09-11 Revised:2024-10-16 Published:2024-12-05
  • Contact: * E-mail: shgao@chem.ecnu.edu.cn
  • Supported by:
    National High Technology Research and Development Program of China(2022YFC2804201); National Natural Science Foundation of China(22225105); Shanghai Science and Technology Committee(22JC1401101)

Kuroshine alkaloids are highly oxidized marine natural products isolated from Zoanthus, which have complex and diverse structure, including three all carbon quaternary carbon centers (C-9, C-12, and C-22), densely functional groups, and a highly oxidized skeleton. The main syntheic challenges include the construction of the fully hydrogenated phenanthrene A-B-C ring, the construction of adjacent quaternary carbon centers (C-9, C-22), and the precise introduction of oxidation states at C-11, C-28, and C-25 positions. A synthetic study on kuroshine alkaloids was conducted, successfully introducing the C-25 oxidation state through the addition of chloromethyl lithium to enone and epoxide rearrangement, and constructing adjacent quaternary carbon centers (C-9, C-22) through intramolecular alkylation substitution reactions. The C-12 oxidation state was introduced through a single electron epoxide opening mediated by samarium iodide. The synthesis of bicyclic aldehyde fragment 19 and chiral iodo fragment 20 was finally completed.

Key words: high oxidation state, alkylation, kuroshine alkaloid, marine natural product