New Monofunctionalized Fluorescein Derivatives for the Efficient High-Throughput Screening of Lipases and Esterases in Aqueous Media
作者:Yongzheng Yang、Peter Babiak、Jean-Louis Reymond
DOI:10.1002/hlca.200690041
日期:2006.3
upon reaction with lipases and esterases within seconds or minutes, both under fully aqueous conditions or in the presence of DMSO (20%) as a co-solvent. The most-reactive substrates in the two series were the octanoic acid derivatives 2f (= 2-6-[(octanoyloxy)methoxy]-3-oxo-3H-xanthen-9-yl}benzoic acid) and 3a (= 2-[6-(octanoyloxy)-3-oxo-3H-xanthen-9-yl]benzoic acid). Esterases were found to generally
荧光素(1)与各种酰氧基甲基或酰基卤的单烷基化或酰化分别提供了一系列的醚(2)和酯官能化的(3)荧光探针。在完全水性条件下或在作为辅助溶剂的DMSO(20%)存在下,几秒钟或几分钟之内与脂肪酶和酯酶反应后,高反应性和水溶性底物就会释放出荧光素(1)。这两个系列中反应性最强的底物是辛酸衍生物2f(= 2- 6-[((辛酸氧基氧基甲氧基)甲氧基] -3-氧代-3 H-黄嘌呤-9-基}苯甲酸)和3a(= 2 -[6-(辛酰氧基)-3-氧代-3 H-黄嘌呤-9-基]苯甲酸)。发现酯酶通常在水性条件下反应更快,而在DMSO作为助溶剂存在下,脂肪酶的反应性更高。