Chin. J. Org. Chem. ›› 2012, Vol. 32 ›› Issue (11): 2154-2161.DOI: 10.6023/cjoc1201202 Previous Articles     Next Articles

Notes

具有叶绿素-a基本骨架的20-meso-位取代二氢卟吩衍生物的合成

王鲁敏a, 王振a, 杨泽a, 金英学b, 王进军a,c   

  1. a 烟台大学化学化工学院 烟台 264005;
    b 哈尔滨师范大学化学化工学院 哈尔滨 150025;
    c 山东省黄金工程技术研究中心(工业应用) 烟台 264005
  • 收稿日期:2012-01-20 修回日期:2012-07-12 发布日期:2012-07-18
  • 通讯作者: 王进军 E-mail:wjj1955@163.com
  • 基金资助:

    国家自然科学基金(No. 20972036)和山东省自然科学基金(No. Y2008B49)资助项目.

Synthesis of 20-meso-Substituted Chlorins with the Basic Skeleton of Chlorophyll-a

Wang Lumina, Wang Zhena, Yang Zea, Jin Yingxueb, Wang Jinjuna,c   

  1. a College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005;
    b College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025;
    c Shandong Applied Research Centre of Gold Nanotechnology (Au-SDARC), Yantai 264005
  • Received:2012-01-20 Revised:2012-07-12 Published:2012-07-18
  • Supported by:

    Project supported by the National Natural Science Foundations of China (No. 20972036) and the Natural Science Foundation of Shandong Province of China (No. Y2008B49).

Methyl pheophorbide-a (MPa) was used as starting material. The coupling reaction of MPa with diazobenzene hydrochloride, hydrobromide and sulfate was carried out to give traces of expected product, while major products were 20-halogenated and nitroso-substituted chlorins. Zinc methyl pyropheophorbide-a reacted with 3-N,N-dimethylacrolein to give Vilsmeier product. The bromination of pyropheophorbide-d with N-bromosuccinimide (NBS) formed single 20-brominated product, the vinyl group of which was resumed by Wittig reaction to give 20-bromopyropheophorbide-a. The electrophilic substitution of other chlorphyllous degradation products afforded corresponding 20-meso-substituted chlorin derivatives in better yields, respectively. The structures of all the new chlorins with basic skeleton of chlorophyll were characterized by UV, IR, 1H NMR spectra and elemental analysis.

Key words: chlorophyll-a, pheophorbide-a, pyropheophorbide-a, chlorin, electrophilic reaction