Optimization of synthesis of photosensitizer chlorin e6-C15 monomethyl ester by the orthogonal design
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摘要: 目的 优化光敏剂二氢卟吩e6-C15单甲酯 (1)的合成工艺。 方法 采用"一锅法", 以脱镁叶绿酸a 为原料, 通N2条件下经碱甲醇液作用下E环开裂后直接添加1/20体积量的水, 回流水解制得化合物1。选择影响其合成产率的开环反应时间(A)、回流水解反应时间(B)、氢氧化钾甲醇液浓度(C)、3与氢氧化钾的质量投料比(D)为主要考察因素, 每个因素各取3个水平, 采用L9(34) 正交试验法优化目标物1的最佳合成工艺。 结果 合成化合物1的最优反应条件为B1C2A2D1, 工艺收率从43.0%提高到56.5%。结论该工艺具有操作简便、安全、收率高等优点, 适合工业化生产。
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关键词:
- 工艺改进 /
- 二氢卟吩e6-C15单甲酯 /
- 正交设计 /
- 光敏剂
Abstract: Objective To optimize the synthesis of photosensitizer chlorine e6-C15 monomethyl ester (1). Methods Target compound 1 was synthesized through E ring cracking of pheophorbide a (3) in methanol solution of potassium hydroxide followed by adding H2O for ester hydrolysis with "one-pot" process. Four main factors that influencing the synthetic yield of target compound 1 are ring cleavage reaction time (A), reflux hydrolysis reaction time (B), alkali concentration (C) and weight ratio of material 3 to alkali (D). Each of the four factors was chosen at three levels and evaluated by the orthogonal experimental design of L9 (34). Results The optimization terms of the synthesis of target compound 1 were B1C2A2D1. The yield of compound 1 was raised from 43.0% to 56.5%. Conclusion The developed process has the advantages of simple operation, good safety and high reaction yield, and is suitable for industrial production. -
[1] Juzeniene A, Moan J. The history of PDT in Norway Part one: identification of basic mechanisms of general PDT [J]. Photodiag Photodyn Ther, 2007, 4(1): 3-11. [2] Xu DY. Research and development of photodynamic therapy photosensitizers in China[J]. Photodiag Photodyn Ther, 2007, 4(1): 13-25. [3] Yao JZ, Zhang WN, Sheng CQ, et al. Design, synthesis, and in vitro photodynamic activities of benzochloroporphyrin derivatives as tumor photosensitizers [J]. Bioorg Med Chem Lett, 2008, 18(1): 293-297. [4] Zhang JL, Deng L, Yao JZ, et al. Synthesis and photobiological study of a novel chlorin photosensitizer BCPD-18MA for photodynamic therapy [J]. Bioorg Med Chem, 2011, 19(18): 5520-5528. [5] 张丹萍,陈志龙,杨晓霞. 光动力药物的研究与开发[J]. 药学进展, 2007, 31(12): 529. [6] 方 瑛,许德余. 二氢卟吩e6-C15单甲酯:一种发展中的第二代光动力治癌新药候选化合物[J]. 中国激光医学杂志, 1999, 8(4): 235. [7] 方 瑛,许德余. 蚕沙叶绿素的降解及二氢卟吩e6醚类衍生物的合成[J]. 有机化学,1995, 15(5): 493. [8] 姚建忠,许德余,陈文晖,等. 蚕沙叶绿素的降解及二氢卟吩P6酰胺衍生物的合成[J].中国医药工业杂志,1999, 30(9): 403. [9] 周怀梧. 医药用数理统计[M]. 济南:山东教育出版社,1986:148. [10] 张春华,严云良. 医药用数理统计[M]. 北京:科学出版社,2001:205.
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