申请人:Molecular Probes, Inc.
公开号:US05248782A1
公开(公告)日:1993-09-28
This invention describes novel 4,4-difluoro-4-bora-3a,4a-diaza-s-indacenes containing heteroaryl substituents conjugated to the fluorophore and methods for their synthesis. The heteroaryl substituted compounds (heteroaryl dyes) generally have the structure: ##STR1## wherein any or all of the substituents R.sub.1 -R.sub.7, but at least one of such substituents, is a heteroaryl group, including 5- or 6-member rings, singly or fused, containing one or more heteroatoms. The new dyes that have spectral properties that are significantly shifted from those of the parent alkyl-substituted dyes, usually accompanied by an increase in photostability and in some cases by an increase in the extinction coefficient relative to the alkyl-substituted dyes. The general method of synthesis includes formation of pyrromethene salt intermediates followed by cyclization with boron trifluoride in the presence of a base to give heteroaryl-substituted dipyrrometheneboron difluoride dyes.
该发明描述了一种新型的4,4-二氟-4-硼-3a,4a-二氮杂-s-吲哚烯,其中含有杂芳基取代物与荧光团结合,并介绍了它们的合成方法。这些杂芳基取代的化合物(杂芳基染料)通常具有以下结构:其中任何或所有取代基R.sub.1 -R.sub.7,但至少其中一个取代基是杂芳基,包括含有一个或多个杂原子的5-或6-成员环,单独或融合。这些新染料的光谱特性与亲烷基取代的染料明显不同,通常伴随着光稳定性的增加,有时伴随着消光系数相对于亲烷基取代的染料的增加。合成的一般方法包括形成吡咯甲烯盐中间体,然后在碱存在下与三氟化硼环化,从而得到杂芳基取代的二吡咯甲烯硼二氟化物染料。