Disclosed herein are nanostructures comprising a polymeric framework comprising at least five geminal bisphosphonate groups, wherein the geminal bisphosphonate groups independently of each other are incorporated as —R
3
R
4
C(P═O(OR
1
)(OR
2
))
2
, wherein R
1
and R
2
are independently selected from the group consisting of a negative charge, H, alkyl and aryl, and wherein at least one of R
3
and R
4
is a group connected to the polymeric framework with the proviso that when only one of R
3
and R
4
is such a connected group, the other of R
3
and R
4
is either a group being able to connect to the polymeric framework, or the residue of such a group, or selected from the group consisting of H, OH, OR
5
and R
5
, wherein R
5
is a lower alkyl. The polymeric framework may comprise manganese ions. Disclosed are also methods for producing such manganese containing nanostructures, compositions comprising such manganese containing nanostructures and use of such manganese containing nanostructures, i.a. as MRI contrasting agents.
[EN] NOVEL MANGANESE COMPRISING NANOSTRUCTURES<br/>[FR] NOUVELLES NANOSTRUCTURES COMPORTANT DU MANGANÈSE
申请人:SPAGO IMAGING AB
公开号:WO2013041623A1
公开(公告)日:2013-03-28
Disclosed herein are nanostructures comprising a polymeric framework comprising at least five geminal bisphosphonate groups, wherein the geminal bisphosphonate groups independently of each other are incorporated as - R3R4C(P=O(OR1)(OR2))2, wherein R1 and R2 are independently selected from the group consisting of a negative charge, H, alkyl and aryl, and wherein at least one of R3 and R4 is a group connected to the polymeric framework with the proviso that when only one of R3 and R4 is such a connected group, the other of R3 and R4 is either a group being able to connect to the polymeric framework, or the residue of such a group, or selected from the group consisting of H, OH, OR5 and R5, wherein R5 is a lower alkyl. The polymeric framework may comprise manganese ions. Disclosed are also methods for producing such manganese containing nanostructures, compositions comprising such manganese containing nanostructures and use of such manganese con¬ taining nanostructures, i.a. as MRI contrasting agents.
Disclosed herein are nanostructures comprising manganese ions incorporated in a polymeric framework comprising at least five geminal bisphosphonate groups, wherein the geminal bisphosphonate groups independently of each other are incorporated as -R3R4C(P=O(OR2)(OR2))2, wherein R1 and R2 are independently selected from the group consisting of a negative charge, H, alkyl and aryl, and wherein at least one of R3 and R4 is a group connected to the polymeric framework with the proviso that when only one of R3 and R4 is such a connected group, the other of R3 and R4 is either a group being able to connect to the polymeric framework, or the residue of such a group, or selected from the group consisting of H, OH, OR5 and R5, wherein R5 is a lower alkyl. Disclosed are also methods for producing such nanostructures, compositions comprising such nanostructures and use of such nanostructures, i.a. as MRI contrasting agents.