Rigid multivalent scaffolds based on adamantane.
We present two new synthetic strategies to rigid multivalent scaffolds of the general structure 1 based on adamantane. Both routes start from arylated adamantane derivatives and give the target compounds 12 and 18 in 5 and 7 steps, respectively. These scaffolds have been designed for the assembly of multivalent binders for cell surface epitopes. The adamantane nucleus exposes three carboxylic acid groups in a well-defined tripodal geometry for conjugation of targeting ligands. In addition, an amino group at the fourth bridgehead position provides a flexible linker for attachment of effector molecules such as contrast agents, radiotracers, or cytotoxins without interfering with the cell binding process.
Nasr
Khaled
K
Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, SL-B05, 330 Brookline Avenue, Boston, Massachusetts 02215, USA.
Pannier
Nadine
N
Frangioni
John V
JV
Maison
Wolfgang
W
D000218:Adamantane / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure
D008024:Ligands; D000218:Adamantane