• Title/Summary/Keyword: carboranes

Search Result 5, Processing Time 0.016 seconds

Boronated Porphyrins and Chlorins as Potential Anticancer Drugs

  • Ol'shevskaya, Valentina A.;Zaytsev, Andrey V.;Savchenko, Arina N.;Shtil, Alexander A.;Cheong, Chan-Seong;Kalinin, Valery N.
    • Bulletin of the Korean Chemical Society
    • /
    • v.28 no.11
    • /
    • pp.1910-1916
    • /
    • 2007
  • Analyzed are recent advances in design of novel boronared conjugates of synthetic and natural porphyrins and chlorins. These compounds showed high efficacy as cytotoxic agents for tumor cells in culture and as phototoxins in photodynamic therapy of tumor xenografts. Thus, boronated porphyrins and chlorins emerge as promising class of anticancer agents with potentially multiple advantages: the chemotherapeutic drugs alone and photo- and radiosensitizers in binary treatments.

A Study on the Reaction of Icosahedral Carborane with Carbenes

  • Sung, Dae-Dong;Lee, Jae-Duck;Choi, Soon-Kyu
    • Bulletin of the Korean Chemical Society
    • /
    • v.8 no.2
    • /
    • pp.63-68
    • /
    • 1987
  • The photolysis and thermal reaction of hexafluorobenzene solution of icosahedral dicarba-closo-dodecaborane and various carbenes have been shown to lead to the formation of four isomeric insertion products to icosahedral molecules. The results showed the carbene insertion reaction to 1, 2-dicarba-closo-dodecaborane to occur at the positions of 4-, 5-, 7-, and 11-borons, 9-, and 12-borons 3-, and 6-borons and 8-, and 10-borons. The samples of 1, 7-, and 1, 12-dicarba-closo-dodecaborane with carbenes in hexafluorobenzene by photolysis showed no reaction. To find out the reactivities of carbenes to dicarba-closo-dodecaboranes, the total energies have been calculated and have been discussed the tendency for carbene insertion reactions to icosahedral carboranes.

Radioiodination strategies for carborane compounds

  • Rajkumar Subramani;Abhinav Bhise;Jeongsoo Yoo
    • Journal of Radiopharmaceuticals and Molecular Probes
    • /
    • v.8 no.1
    • /
    • pp.39-44
    • /
    • 2022
  • The development of methods for the inert and stable radiohalogenation of targeted radiopharmaceuticals is a prerequisite for real-time diagnosis and therapy using radiohalogenated radiopharmaceuticals. Radiohalogenated carboranes demonstrate superior stability in vivo and versatile applications compared with directly labeled tyrosine analogues or synthetically modified organic compounds. Herein, we focus on the most common approaches for the radioiodination (123l, 124l, 125l, and 131l) of carborane derivatives.

Oxidation of Tricarbonylmolybdacarborane.3.1 A New Entry to the First Examples of Sulfido-Bridged Dinuclear molybda(V)carboranes

  • Hwang, Jeong-Wook;Kim, Jae-Hak;Kim, Jin-Kwon;Uhm, Jae-Kook;Do, Young-Kyu
    • Bulletin of the Korean Chemical Society
    • /
    • v.23 no.9
    • /
    • pp.1257-1262
    • /
    • 2002
  • $[(C_2B_9H_{11})Mo(CO)_3]_2PPN_2$ $(2{\cdot}PPN_2)$, a new precursor for the oxidative decarbonylation reaction, was synthesized in high yield by the one-electron oxidation reaction of $[(C_2B_9H_{11})Mo(CO)_3]PPN_2$. $2{\cdot}PPN_2$ was structurally characterized, showing a dimeric nature with long (3.321 ${\AA}$) Mo-Mo bonding. Reaction of $2{\cdot}PPN_2$ with sulfur gave the completely decarbonylated product $[(C_2B_9H_{11})Mo({\mu}-S)(S)]_2PPN_2$ ($3{\cdot}PPN_2$). The ligand substitution of the terminal sulfur ligands in $3{\cdot}PPN_2$ to oxygen ligands was carried out with the use of PhIO to give $[(C_2B_9H_{11})Mo({\mu}-S)(O)]_2PPN_2$ ($4{\cdot}PPN_2$). The structures of $3{\cdot}PPN_2$ and $4{\cdot}PPN_2$ were also studied.