1160293-95-7Relevant academic research and scientific papers
Synthesis of Water-Soluble Chiral DOTA Lanthanide Complexes with Predominantly Twisted Square Antiprism Isomers and Circularly Polarized Luminescence
Dai, Lixiong,Zhang, Junhui,Chen, Yuqing,Mackenzie, Lewis E.,Pal, Robert,Law, Ga-Lai
, p. 12506 - 12510 (2019/10/02)
One-step cyclization of a tetraazamacrocycle 5 with 70% yield in a 25-g scale was performed. Its chiral DOTA derivatives, L4, has ?93% of TSAP coordination isomer in its Eu(III) and Yb(III) complexes in aqueous solution. [GdL4]5- exhibits a high relaxivity, making it a promising and efficient MRI contrast agent. High luminescence dissymmetry factor (glum) values of 0.285 (ΔJ = 1) for [TbL3]- and 0.241 (ΔJ = 1) for [TbL4]5- in buffer solutions were recorded.
CHIRAL CYCLEN COMPOUNDS AND THEIR USES
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Paragraph 0081; 0091; 0199, (2018/04/13)
The present invention relates to the preparation of a series of chiral DOTA, D03A, D02A, DO1A, cyclen and their metal complexes, which display properties superior to those of previous DOTA- based compounds, and hence are potentially valuable as a platform for diagnostic applications. The chiral DOTAs reveal a high abundance of twisted square antiprism (TSA) geometry favoring them to be used as potential MRI contrast agents, whereas their rapid labelling properties at mild conditions make them excellent candidates for use as radiometal chelators.
Chiral tetraazamacrocycles having four pendant-arms
Kamioka, Seiji,Takahashi, Takashi,Kawauchi, Susumu,Adachi, Hiroaki,Mori, Yusuke,Fujii, Kotaro,Uekusa, Hidehiro,Doi, Takayuki
supporting information; experimental part, p. 2289 - 2292 (2009/10/02)
A chiral tetraazamacrocycle 9 having four pendant-arms was synthesized by repeating ring opening of an Ns-aziridine with secondary amines, followed by macrocyclization. The structure of 9 has been determined by single crystal X-ray diffraction analysis and NMR studies. Sugarhybrid molecules 12a-12f were synthesized based on the scaffold 9. NMR study showed that 12a-12f keep the similar conformation as 9 in solution.
