Novel ether substituted fluorescein polyamino acid compounds as
申请人:Syva Company
公开号:US04318846A1
公开(公告)日:1982-03-09
Diether symmetrically substituted fluoresceins are provided having at least one anionic group and a linking functionality. Depending upon the site of substitution, the compounds can be used as fluorescers absorbing at wavelengths in excess of 500 nm or as quenchers, absorbing at wavelengths in excess of 500 nm and exhibiting substantially no fluorescence. The compounds find wide application, particularly as labels in fluorescent immunoassays.
Novel ether substituted fluorescein compounds as fluorescers and quenchers
申请人:SYVA COMPANY
公开号:EP0050684A1
公开(公告)日:1982-05-05
Diether symmetrically substituted fluoresceins are provided having at least one anionic group and a linking functionality. Depending upon the site of substitution, the compounds can be used as fluorescers absorbing at wavelengths in excess of 500nm or as quenchers, absorbing at wavelengths in excess of 500 nm and exhibiting substantially no fluorescence. The compounds find wide application. particularly as labels in fluorescent immunoassays.
Restricted Rotation in Aromatic Ketones. I. Substituent Effects on the Barrier to Rotation about the Benzene-to-Carbonyl Bond
作者:Nobuo Nakamura、Michinori Oki
DOI:10.1246/bcsj.45.2565
日期:1972.8
Several arylisopropyl ketones and aryl benzyl ketones were synthesized and their NMR spectra were recorded at various temperatures. Their temperature dependence was accounted for in terms of the restricted rotationabout the benzene-to-carbonyl bond, whose free energies of activation at the coalescence temperatures varied from 9 to 15 kcal/mol according to the steric effect of ortho substituents,