Solution- and solid-phase parallel synthesis of 4-alkoxy-substituted pyrimidines with high molecular diversity.
J Comb Chem
; 5(3): 311-21, 2003.
Article
en En
| MEDLINE
| ID: mdl-12739948
ABSTRACT
A simple and straightforward methodology toward the synthesis of novel 2,6-disubstituted-4-alkoxypyrimidine derivatives of type 16 and 19 has been developed. This methodology, initially developed in solution, can be perfectly adapted to the solid support under analogous conditions, taking full advantage of automated parallel synthesis systems. This successful methodology benefits from the key role played by the thioether linkage placed at the 2-position in 3, 9, or 13 in a double manner on one side, the steric effect exerted by the thioether linkage is likely to be responsible for the very high observed selectivity toward the formation of the O-alkylation products. On the other side, this sulfur linkage can serve not only as a robust point of attachment for the heterocycle, stable to a number of reaction conditions, but also as a means of introducing a new element of diversity through activation to the corresponding sulfone (safety-catch linker concept) and subsequent ipso-substitution reaction with a variety of different N-nucleophiles.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Comb Chem
Asunto de la revista:
QUIMICA
Año:
2003
Tipo del documento:
Article
País de afiliación:
España