The synthesis of porphyrins conjugated with sugar moieties is described. meso-Aminophenyl-substituted and β-amino-substituted porphyrin derivatives reacted with benzyl protected glucuronic acid leading to gluco-conjugated hybrids, which after reductive deprotection of OH groups ( H2, 10% Pd/C ) gave the desired target products of increased hydrophilicity. Alternatively, this type of similar conjugates were obtained through SNAr reaction of meso-tetrakis(pentafluorophenyl)porphyrin with aminomethyl sacharides. The substitution took place selectively in para-position of meso-perfluorophenyl rings, thus giving rise to one, two, or three times substituted products carrying N-linked glucoside residues.
介
氨基
苯基取代和 β
氨基取代的
卟啉衍
生物与受
苄基保护的
葡萄糖醛酸反应,生成
葡糖共轭混合物,在对羟基进行还原
脱保护(H2、10% Pd/C)后,得到亲
水性更强的所需目标产物。另外,通过中-四(
五氟苯基)
卟啉与
氨基
甲基沙卡里苷的 SNAr 反应,也可以得到这类类似的共轭物。这种取代选择性地发生在中-
全氟苯基环的对位,因此产生了带有 N-连接
葡糖苷残基的一倍、两倍或三倍取代产物。