Dendrimeric Gadolinium Chelate with Fast Water Exchange and High Relaxivity at High Magnetic Field Strength
摘要:
The synthesis and relaxivity properties of a new dendrimeric Gd chelate, Gd-TREN-bisHOPO-TAM-Asp-Asp2-12OH, are presented. The macromolecule demonstrates improved water solubility due to its 12 terminal hydroxyl groups and improved relaxivity due to its optimal water exchange rate and slower molecular tumbling. Unprecedented high relaxivity (r1p = 18 mM-1 s-1) is observed at high magnetic field (90 MHz), an important advance in the development of contrast agents for the next generation of MRI scanners.
下缘多羟基化杯[4]芳烃的合成 Mag rita Segura,a Francesco Sansone,b Alessandro Casnati,b Rocco Ungaro*ba Departamento de Quimica Organica, Facultad de Ciencias, Universidad Autonoma de Madrid, Cantoblanco, 28049, 马德里, 西班牙 b Dipartimento di Chimica Organica e Industriale dell'Università, Parco Area delle Scienze 17/A, 43100, Parma, Italy 传真 +39(521)905472;电子邮件:ungaro@unipr.it 2001 年 6 月 25 日收到;2001 年 8 月 6 日修订
The present invention discloses a compound with the following formula (I), or a tautomer, mesomer, racemate, enantiomer, and diastereoisomer thereof, or a mixture form thereof, or a pharmaceutically acceptable salt thereof, or a prodrug molecule thereof, wherein D is selected from:
The invention further discloses the use of the compound in the preparation of drugs for preventing and/or treating cancers, and the use of the compound in the preparation of drugs for inhibiting cancer metastasis. The compound of the present invention can effectively inhibit the proliferation and metastasis of cancer cells by adjusting the acidity of a tumor microenvironment to achieve a better effect in clinical cancer treatment, and has broad application prospects.
Synthesis of Compounds Presenting Three and Four Anthracene Units as Potential Connectors To Mediate Infinite Lateral Growth at the Air/Water Interface
analysis. The reported experiments are considered first steps towards the ultimate goal of the rationalsynthesis of laterally "infinite", one-monomer-unit-thick molecular sheets with a long-range positional order and a periodic covalent-bonding pattern. Such sheets are referred to as 2Dpolymers and are considered a prime goal of chemical synthesis with intriguing applications.
In-depth structure–selectivity investigations on asymmetric, copper-catalyzed oxidative biaryl coupling in the presence of 5-cis-substituted prolinamines