SUBSTITUTED 2 - PYRIDINYL - 6,7,8,9 - TETRAHYDROPYRIMIDO {1,2-A} PYRIMIDIN- 4 - ONE AND 7 -PYRIDINYL- 2,3 - DIHYDROIMIDAZO {1,2 - A} PYRIMIDIN- 5(1H) ONE DERIVATIVES

摘要

The invention relates to 3-ketoester of formula (IV) €ƒ€ƒ€ƒwherein R1 represents a 2, 3 or 4-pyridine ring optionally substituted by a C 3-6 cycloalkyl group, a C 1-4 alkyl group, a C 1-4 alkoxy group, a benzyl group or a halogen atom, R5 is an halogen atom and R is an alkyl.