申请人:The Johns Hopkins University
公开号:US05397563A1
公开(公告)日:1995-03-14
Accordingly, the present invention is directed to biological compounds derivatized so as to contain at least one perfluoro-t-butyl moiety for use in fluorine-19 NMR and/or MRI studies. The perfluoro-t-butyl (PFTB) moiety, ##STR1## is an excellent reporter group for fluorine-19 NMR/MRI. It is a source of nine magnetically equivalent fluorine nuclei which generate a single intense resonance for easy detection in spectroscopy or imaging. This signal is a sharp singlet, not split by neighboring nuclei or spread over a wide frequency range and eliminates any chance of ghost images which might arise from multiple resonances. These spectral properties ensure a maximum signal-to-noise ratio (S/N) for readily detecting this moiety. The foregoing allows either reduction in the concentration of the derivatized compound, ability to use MRI instruments with lower field strengths, a reduction in imaging times, or a combination of the foregoing as a result of this moiety producing a single, sharp, intense resonance. Additionally, the PFTB moiety-containing compounds may be utilized to determine oxygen concentration in aqueous solutions present in animate and inanimate objects.
因此,本发明涉及生物化合物的衍生物,以至少含有一个全氟叔丁基基团,用于氟-19 NMR和/或MRI研究。全氟叔丁基(PFTB)基团,##STR1## 是氟-19 NMR/MRI的优秀报告基团。它是九个磁性等效氟核的来源,产生单个强烈的共振,易于在光谱学或成像中检测。该信号是一个尖锐的单线,不会被邻近核分裂或分散在广泛的频率范围内,并消除了任何可能由多个共振引起的幽灵图像的机会。这些光谱特性确保最大的信噪比(S / N),以便轻松检测该基团。由此产生的单个、尖锐、强烈的共振使得可以减少衍生化合物的浓度,能够使用磁场强度较低的MRI仪器,缩短成像时间,或同时采用上述措施。此外,含有PFTB基团的化合物可用于确定存在于生物和非生物对象中的水溶液中的氧浓度。