Aromatic-substituted xanthene dyes
US6008379A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B11/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A class of aromatic-substituted xanthene compounds useful as fluorescent dyes is disclosed, the compounds having the general structure where Y.sub.1 and Y.sub.2 taken separately are selected from the group consisting of hydroxyl, oxygen, imminium, linking group and amine, or Y.sub.1 taken together with R.sub.2 is cyclic imine, or Y.sub.2 taken together with R.sub.3 is cyclic amine; R.sub.2, R.sub.3, R.sub.5, and R.sub.7 taken separately are selected from the group consisting of hydrogen, fluorine, chlorine, lower alkyl, lower alkene, lower alkyne, sulfonate, sulfone, amino, imminium, amido, nitrile, lower alkoxy, phenyl, and linking group; R.sub.1 taken separately is selected from the group consisting of phenyl, substituted phenyl, polycyclic aromatic, substituted polycyclic aromatic, linking group and electron-rich heterocycle, or when taken together with R.sub.7 is selected from the group consisting of electron-rich heterocycle and indene; R.sub.4 taken separately is selected from the group consisting of amino, amido, phenyl, substituted phenyl, polycyclic aromatic, substituted polycyclic aromatic, indene, linking group and electron-rich heterocycle, or when taken together with R…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.