Isoprene-catalyzed lithiation of imidazole: synthesis of 2-(hydroxyalkyl)- and 2-(aminoalkyl)imidazoles
作者:Rosario Torregrosa、Isidro M. Pastor、Miguel Yus
DOI:10.1016/j.tet.2005.09.024
日期:2005.11
of isoprene (20 mol%) in THF at room temperature. By reacting this organolithium with carbonyl electrophiles 2-(hydroxyalkyl)imidazoles 3 were obtained, in good yields. As a result of the reaction of the mentioned lithium intermediate with imines 4, the corresponding 2-(aminoalkyl)imidazoles 5 were isolated in excellent yields.
Compounds of Formula I
wherein R
1
, A, R
2
, n, R
3
, m, R
4
, R
5
and q are as described in the specification, pharmaceutically-acceptable salts, methods of making, pharmaceutical compositions containing and methods for using the same.
Provided are nitroplatinum(IV) complexes containing a bidentate dicarboxylate ligand (e.g., oxalate) which maybe useful treating various forms of proliferative diseases, such as cancer. In some instances the platinum(IV) complexes are relatively stable and may be suitable for oral administration. Also provided are methods of treatment, as well as kits and unit dosages.