申请人:CARNEGIE MELLON UNIVERSITY
公开号:EP1394219A1
公开(公告)日:2004-03-03
The present invention provides pH sensitive cyanine dyes having the structure (I)
wherein X and Y are independently selected from >C(C1 - C4alkyl)2, sulfur and oxygen; R1 and R2 are independently selected from H, CH2NH2, SO3-, phosphate, phosphonate, quaternary ammonium, (CH2)qCOOH, NCS, CH2NH-COR7, where R7 is C1 - C20 straight or branched alkyl and (CH2)qCOOH where q is an integer from 0 - 10; R3 is H or -L-P where L is selected from C1 - C20 straight or branched alkyl optionally containing 0, 1 or 2 unsaturated groups selected from alkenyl and alkynyl, and P is selected from a reactive group, H, C1 - C20 straight or branched alkyl, SO3-, NH2, quaternary ammonium, CH2NH-COR8, where R8 is C1 - C20 straight or branched alkyl, -(CH2)mCOOH, NHR9 where R9 is C1 - C20 straight or branched alkyl; n is an integer from 0 - 3; p and r are independently 0, 1, 2, 3 or 4 and where p and/or r is greater than 1, each R1 and each R2 may be different, and m is an integer from 1 - 10; and salts and protonated derivatives thereof and methods of using same as fluorescent reagents.
本发明提供了具有结构(I)的pH敏感的青霉素染料,其中X和Y分别选自>C(C1-C4烷基)2、硫和氧;R1和R2分别选自H、CH2NH2、SO3-、磷酸盐、膦酸盐、季铵盐、(CH2)qCOOH、NCS、CH2NH-COR7,其中R7为C1-C20直链或支链烷基和(CH2)qCOOH,其中q为0-10的整数;R3为H或-L-P,其中L选自C1-C20直链或支链烷基,可选地含有0、1或2个烯烃基和炔烃基,P选自反应性基团、H、C1-C20直链或支链烷基、SO3-、NH2、季铵盐、CH2NH-COR8,其中R8为C1-C20直链或支链烷基,-(CH2)mCOOH、NHR9,其中R9为C1-C20直链或支链烷基;n为0-3的整数;p和r分别独立为0、1、2、3或4,其中p和/或r大于1时,每个R1和每个R2可能不同,m为1-10的整数;以及其盐和质子化衍生物以及使用它们作为荧光试剂的方法。