Labelling of Carbaboranyl Compounds with a Selenium Atom with a View to Applications in Boron-Neutron-Capture Therapy (BNCT) and Positron-Emission Tomography (PET)
摘要:
We synthesized 2'-carbaboranyl-2,5'-bi-1H-benzimidazoles containing 10 B-atoms and labeled with Se or the positron-emitting radionuclide Se-73 (t(1/2) = 7.1 h), with a view to their application to cancel. treatment by boron-neutron-capture therapy (BNCT) and to compound-distribution measurements in vivo by positron-emission tomography (PET). Thus, 2,2'-{[2'-(4-[1,2-dicarba-closo-dodecaboran(12)-2-ylmethoxy]phenyl]-[2,5'-bi-1H-benzimidazol]-5-yl}imino)bis[ethanol] (26c) was obtained by the reaction of 2,2'-[(3,4-diaminephenyl)imino]bis[ethanol] (19) with ethyl 2-{4-[1,2-dicarba-closo-dodecaboran(12)-2-ylmethoxy]phenyl}-1H-benzimidazole-5-carboximidate hydrochloride (25), as well as the analogues 26a and 26b (Scheme 6). Tosylation of compound 26c gave 4 regioisomers 27a-d, which, after selenation, produced 2'-{4-[1,2-dicarba-closo-dodecaboran(12)-2-ylmethoxy]phenyl}-5-(tetrahydro-2H-1,4-selenazin-4-yl)-2,5'-bi-1H-benzimidazole (29) in 42% yield (Scheme 7).
Labelling of Carbaboranyl Compounds with a Selenium Atom with a View to Applications in Boron-Neutron-Capture Therapy (BNCT) and Positron-Emission Tomography (PET)
摘要:
We synthesized 2'-carbaboranyl-2,5'-bi-1H-benzimidazoles containing 10 B-atoms and labeled with Se or the positron-emitting radionuclide Se-73 (t(1/2) = 7.1 h), with a view to their application to cancel. treatment by boron-neutron-capture therapy (BNCT) and to compound-distribution measurements in vivo by positron-emission tomography (PET). Thus, 2,2'-{[2'-(4-[1,2-dicarba-closo-dodecaboran(12)-2-ylmethoxy]phenyl]-[2,5'-bi-1H-benzimidazol]-5-yl}imino)bis[ethanol] (26c) was obtained by the reaction of 2,2'-[(3,4-diaminephenyl)imino]bis[ethanol] (19) with ethyl 2-{4-[1,2-dicarba-closo-dodecaboran(12)-2-ylmethoxy]phenyl}-1H-benzimidazole-5-carboximidate hydrochloride (25), as well as the analogues 26a and 26b (Scheme 6). Tosylation of compound 26c gave 4 regioisomers 27a-d, which, after selenation, produced 2'-{4-[1,2-dicarba-closo-dodecaboran(12)-2-ylmethoxy]phenyl}-5-(tetrahydro-2H-1,4-selenazin-4-yl)-2,5'-bi-1H-benzimidazole (29) in 42% yield (Scheme 7).
[EN] PROCESS FOR DYEING KERATIN FIBRES USING COLOURED OLIGOMERS AND/OR POLYMERS DERIVED FROM SELF-OXIDIZING COMPOUNDS, COMPOSITION AND COLOURING AGENT FOR THE SAME<br/>[FR] PROCÉDÉ DE COLORATION DE FIBRES DE KÉRATINE AU MOYEN D'OLIGOMÈRES ET/OU DE POLYMÈRES COLORÉS DÉRIVÉS DE COMPOSÉS AUTO-OXYDANTS, COMPOSITION ET AGENT COLORANT POUR CELUI-CI
申请人:OREAL
公开号:WO2015086675A1
公开(公告)日:2015-06-18
The invention relates to a) a process for dyeing keratin materials using a colouring agent chosen from coloured oligomers and polymers obtained from the polycondensation of i) self-oxidizing compounds in the presence of ii) one or more ingredients chosen from radical initiators and/or chemical oxidizing agents, b) a composition comprising one or more coloured oligomers and/or one or more coloured polymers as defined previously and c) a coloured oligomeric or polymeric colouring agent obtained by reaction between i) and ii) as defined previously, and to the use of the coloured oligomer(s) or polymer(s) for dyeing keratin materials. The dyeing process and the composition according to the invention especially afford a long-lasting colouring on keratin fibres, which is strong, chromatic and/or homogeneous.