咪唑取代的金属卟啉对于自组装研究和需要水溶性的应用很有价值。已经开发出在内消旋位置带有一个或两个咪唑-2-基或咪唑-4-基的卟啉的合理合成方法。合成使用在5-位带有咪唑基的二吡咯甲烷,1-酰基吡咯甲烷和1,9-二酰基吡咯甲烷。通过使用(1)咪唑吡咯氮上的2-(三甲基甲硅烷基)乙氧基甲基(SEM)基团和(2)与二吡咯甲烷的吡咯键合并与二吡咯甲烷配位的二烷基硼基团成功掩盖了极性的反应性咪唑单元咪唑亚氨基氮。这种双重掩蔽的咪唑基-二吡咯甲烷的非极性性质有利于处理。选定的掩蔽二吡咯甲烷具有11个特征B和15 N NMR光谱。研究了五种不同的方法以获得反式-A 2 B 2-,反式-AB 2 C-和反式-AB-卟啉。每个卟啉均包含一个或两个SEM保护的咪唑单元。可以用TBAF或HCl去除SEM组。制备两个带有一个咪唑部分的锌(II)卟啉和一个钯(II)卟啉,并进行烷基化(用碘乙烷,1,3-丙烷磺酸内酯或1
Synthesis and structural properties of porphyrin analogues of bacteriochlorophyll c
作者:Marcin Ptaszek、Zhen Yao、Dhanalekshmi Savithri、Paul D. Boyle、Jonathan S. Lindsey
DOI:10.1016/j.tet.2007.10.023
日期:2007.12
The self-assembling photosynthetic pigment bacteriochlorophyll c contains a-hydroxyethyl and keto groups on opposite sides of the macrocycle. A porphyrin has been synthesized that contains a 3-hydroxymethyl group and a 15-ethoxycarbonyl group (ZnP2-OH). X-ray analysis of ZnP2-OH and the related porphyrin containing 5-hydroxymethyl and 15-ethoxycarbonyl groups (ZnP1-OH) in each case revealed infinite coordination polymers wherein the zinc porphyrins are bound by Zn-O coordination and are cofacially offset in a staircase architecture. (c) 2007 Elsevier Ltd. All rights reserved.