Compositions, methods of preparing amino acids, and nuclear magnetic resonance spectroscopy
申请人:Shull Keith Brian
公开号:US20070104648A1
公开(公告)日:2007-05-10
The present invention relates to amino acids, complexes, and compounds comprising deuterium and tritium isotopes preferably alpha deuterated amino acids, polypeptides, antibodies, derivatives and saccharide-amino acid complexes and conjugates. In some embodiments, the invention relates to methods of using compounds comprising deuterium for imaging biochemical concentrations and distributions in mammalian tissues using nuclear magnetic resonance spectroscopy. In some embodiments, the invention relates to the used of said amino acids derivatives and complexes in boron neutron capture therapy. In some embodiments, the present invention relates to the preparation of amino acids, polypeptides, antibodies, derivatives and saccharide complexes/conjugates comprising heavy hydrogen isotopes. In some embodiments, the invention relates to racemizing amino acids starting from compositions of any optical purity. In further embodiments, the invention relates to the preparation of amino acids and their N-acyl counterparts with deuterium incorporated at the alpha carbon.
<sup>64</sup>Cu-Labeled Boron-Containing Cyclic RGD Peptides for BNCT and PET Imaging
作者:Soyeon Kim、Sajid Mushtaq、Kyo Chul Lee、Ji Ae Park、Jung Young Kim
DOI:10.1021/acsmedchemlett.4c00007
日期:2024.3.14
exceptional in vitro stability and demonstrated significant uptake in U87MG tumors via PET imaging. Biodistribution analysis usingcompound 2 showed a 7.0 ppm accumulation of boron in the U87MG tumor 1 h post-intravenous injection. Furthermore, compound 2 displayed superior tumor/blood (2.41) and tumor/muscle (2.46) ratios compared to the clinically approved l-BPA-fructose. Both compound 2 and its diagnostic
人们对开发硼中子捕获疗法(BNCT)示踪剂及其用于治疗顽固性肿瘤的伴随诊断的兴趣日益浓厚,促使了这项研究。我们的研究旨在设计一种利用 BNCT 靶向 α v β 3整合素的肿瘤治疗策略。为此,我们提出了一种开创性的注入硼的环状精氨酸-甘氨酸-天冬氨酸(RGD)肽,cRGD( d -BPA)K,被设计为有效的BNCT示踪剂。此外,我们还推出了其诊断补充 DOTA-cRGD( d -BPA)K,专为正电子发射断层扫描 (PET) 定制,以可视化 α v β 3表达的肿瘤。放射性标记[ 64 Cu]Cu-DOTA-cRGD( d -BPA)K ( 64 Cu- 1 ) 产生高放射化学产率和纯度。该放射性示踪剂表现出卓越的体外稳定性,并通过 PET 成像显示在 U87MG 肿瘤中的显着吸收。使用化合物2进行的生物分布分析显示,静脉注射后 1 小时,U87MG 肿瘤中硼积累了 7.0 ppm。此外,与临床批准的l
Direct Synthesis of Unprotected 4-Aryl Phenylalanines via the Suzuki Reaction under Microwave Irradiation
作者:Yong Gong、Wei He
DOI:10.1021/ol026587z
日期:2002.10.1
[formula: see text] 4-Aryl phenylalanines were prepared as free amino acids from the Suzuki coupling of 4-borono phenylalanine with aryl halides in high yields within 5-10 min undermicrowaveirradiation.