Chin. J. Org. Chem. ›› 2011, Vol. 31 ›› Issue (12): 2074-2081. Previous Articles     Next Articles

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具有叶绿素基本碳架的C-3-异噁唑啉基二氢卟吩类衍生物的合成

王进军*,李韵伟,李家柱,殷军港   

  1. (烟台大学化学生物理工学院 烟台 264005)
  • 收稿日期:2010-12-19 修回日期:2011-01-06 发布日期:2011-07-28
  • 通讯作者: 王进军 E-mail:wjj1955@163.com

Synthesis of C-3-isoxazolyl Chlorins with Basic Skeleton of Chloro-phyll-a

WANG Jin-Jun, LI Yun-Wei, LI Jia-Zhu, YIN Jun-Gang   

  1. (Science and Engineering College of Chemistry and Biology, Yantai University, Yantai 264005)
  • Received:2010-12-19 Revised:2011-01-06 Published:2011-07-28

Methyl pheophorbide-a was used as starting material, and C-3-isoxazolyl-substituted chlorins and other adducts were obtained by 1,3-dipolar cycloadditions of the vinyl group at 3-position with benzonitrile oxide and 4-nitrobenzonitrile oxide, respectively. The 3-isoxazolylpheophorbide-a was converted into rele-vant chlorin-p6 derivative by the modification for the E-ring. The allomerization and rearrangement of the starting material produced purpurin-18 imide which was converted into title compound in desirable yield via same cycloaddition with 4-subatituted benzonitrile oxide. The structures of new chlorophyll derivatives were characterized by UV, IR, 1H NMR spectra and elemental analysis. The possible mechanisms about corresponding oxidation, substitution and rearrangement reactions were tentatively proposed.

Key words: chlorophyll-a, methyl pheophorbide-a, C-3-isoxazolyl-chlorin, 1,3-dipolar cycloiddtion, photodynamic therapy (PDT)