Synthesis and characterization of 4-ethoxymethylene-2-[1]-naphthyl-5(4H)-oxazolone and its fluorescent amino acid derivatives
作者:György Kóczán、Gabriella Csı́k、Antal Csámpai、Erika Balog、Szilvia Bősze、Pál Sohár、Ferenc Hudecz
DOI:10.1016/s0040-4020(01)00332-5
日期:2001.5
4-Ethoxymethylene-2-[1]-naphthyl-5(4H)-oxazolone 1b was synthesized from 1-naphthoyl-glycine and triethyl orthoformate as a fluorescent analogue of the hapten 4-ethoxymethylene-2-phenyl-5(4H)-oxazolone. A simple and general method has been devised to prepare conjugates of type 6 between 1b and amines and amino acids by direct reaction. Compounds 6 are stable in solid form and in aqueous solution at 20°C, but
4-乙氧基亚甲基-2- [1]萘-5-(4 ħ) -恶唑酮1B是从1-萘-甘氨酸和原甲酸三乙酯合成的半抗原4-乙氧基亚甲基-2-苯基-5-(4的荧光类似物ħ)-恶唑酮。已经设计出一种简单而通用的方法,通过直接反应来制备1b与胺和氨基酸之间的6型缀合物。化合物6在固体形式和在20℃的水溶液中是稳定的,但是是两种异构体的混合物。在模型化合物上的1 H和13 C-NMR实验确定了更稳定的异构体。1b荧光性质的比较分析的氨基酸衍生物已经鉴定了两种生色团的光谱性质。强烈的和pH敏感的发射带为中心在λ = 460nm处(λ EX在水溶液= 360纳米)已发现。此功能对于监视不同pH的细胞室可能很有用。