有机化学 ›› 2014, Vol. 34 ›› Issue (10): 2047-2056.DOI: 10.6023/cjoc201402041 上一篇    下一篇

研究论文

焦脱镁叶绿酸-a的C(12)-位非甲基化及其叶绿素类二氢卟吩衍生物的合成

纪建业a, 殷军港b, 张千b, 刘超b, 祁彩霞c, 王进军b,c   

  1. a. 通化师范学院化学系 通化 134002;
    b. 烟台大学化学化工学院 烟台 264005;
    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:2014-02-28 修回日期:2014-04-04 发布日期:2014-06-09
  • 通讯作者: 王进军 E-mail:jj1955@163.com
  • 基金资助:

    国家自然科学基金(No. 21272048)和山东省黄金工程技术研究中心(2011年度)资助项目.

C(12)-Nomethylation of Pyropheophorbide-a and Synthesis of Chlorophyllous Chlorins Derivatives

Ji Jianyea, Yin Jungangb, Zhang Qianb, Liu Chaob, Qi Caixiac, Wang Jinjuncb,c   

  1. a. Department of Chemistry, College of Teachers, Tonghua 134002;
    b. College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005;
    c. Shandong Applied Research Centre of Gold nanotechnology Au-SDARC, Yantai 264005
  • Received:2014-02-28 Revised:2014-04-04 Published:2014-06-09
  • Supported by:

    Project supported by the National Natural Science Foundations of China (No. 21272048) and the Project of Shandong Applied Research Centre of Gold Nanotechnology (2011).

以叶绿素降解产物脱镁叶绿酸-a甲酯为起始原料,利用空气氧化反应在12-位上引进甲酰基,再通过氧化、还原、Grignard、Knoevenagel、Cannizzaro和1,3-偶极环加成等经典反应进行官能团转换,并对五元外接E-环实施结构改造,在C(12)-位上分别建立了能与大环色基形成不同共轭程度的酰基、酯基和取代烃基,完成了一系列未见报道的叶绿素类二氢卟吩衍生物的合成,其化学结构均经UV,IR,1H NMR及元素分析予以证实,同时也讨论了C(12)-位非甲基化对叶绿素类四吡咯大环分子所形成的各种影响.

关键词: 叶绿素-a, 二氢卟吩, 化学修饰, C(12)-非甲基化, 合成

Pyropheophorbide-a methyl ester, as a degradation product from chlorophyll-a, was used as a starting material, and the formyl group was introduced at 12-position by allomerization. The transformations of C(12)-functional group, including the structural rebuilding of E-ring, were carried out by classic reactions such as oxygenation, reduction, Grignard reaction, Knoevenagel reaction, Cannizzaro reaction and 1,3-dipolar cyclocaddition. The acyl, ester and substituted alkyl groups, which could conjugated with macrocyclic chromophore at various degrees, were established at 12-position. The synthesis of a series of unreported chlorins related to chlorophyll was accomplished and their chemical structures were characterized by elemental analysis, UV, IR and 1H NMR spectra. The different fluences on the chlorophyllous tetrapyrrole molecule by C(12)-nomethylation were also discussed.

Key words: chlorophyll-a, chlorin, chemical modification, C(12)-nomethylation, synthesis