Fluorinated xanthene derivatives

C - Chemistry – Metallurgy – 09 – B

Patent

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Details

C09B 11/24 (2006.01) C07C 37/055 (2006.01) C07C 39/27 (2006.01) C07C 41/26 (2006.01) C07C 43/23 (2006.01) C07C 205/26 (2006.01) C07C 205/37 (2006.01) C07C 209/36 (2006.01) C07C 245/20 (2006.01) C07D 311/82 (2006.01) C07K 1/13 (2006.01) C09B 11/00 (2006.01) C09B 57/00 (2006.01) C12Q 1/30 (2006.01) C12Q 1/68 (2006.01) G01N 1/30 (2006.01) G01N 33/533 (2006.01)

Patent

CA 2222275

The family of dyes of the invention are fluoresceins and rhodols that are directly substituted on one or more aromatic carbons by fluorine. These fluorine-substituted fluorescent dyes possess greater photostability and have lower sensitivity to pH changes in the physiological range of 6-8 than do non- fluorinated dyes, exhibit less quenching when conjugated to a substance, and possess additional advantages. The dyes of the invention are useful as detectable tracers and for preparing conjugates of organic and inorganic substances.

Les colorants faisant l'objet de la présente invention appartiennent à la famille des fluorescéines et des rhodols directement substitués par le fluor sur un ou plusieurs carbones aromatiques. Ces colorants fluorescents substitués par le fluor présentent, par rapport aux colorants non fluorurés, une meilleure photostabilité et une sensibilité moins grande aux changements de pH, dans la plage physiologique comprise entre 6 et 8. De plus, entre autres avantages, ils nécessitent un refroidissement moindre lorsqu'ils sont conjgués à une substance. Les colorants faisant l'objet de la présente invention sont utiles en tant qu'indicateurs décelables ainsi que dans la préparation de conjugués de substances organiques et non organiques.

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