C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 487/22 (2006.01)
Patent
CA 2406872
A process for the preparation of compound of formula (IA), decahedra- 2a,4a,6a,8a-tetraazaccyclopent[fg]acenaphthylene and the corresponding functionalised compounds of general formula (I), which comprises 2 steps; a) the preparation of compounds of general formula (III) and b) subsequent reduction thereof. R are both hydrogen, or one is hydrogen and the other is a straight or branched C1-C4 alkyl group, optionally substituted with one or more -OPg- protected groups, in which Pg is a hydroxy - protecting group. Y1 or Y2 is -CH2-CH2 and the other is -Co-Co- or a group of formula -COCHR, wherein R has the meaning defined above.
L'invention concerne un procédé de préparation d'un composé correspondant à la formule (I A), le décahydro-2a,4a,6a,8a-tétraazacyclopent¢fg!acénaphtylène ainsi que des composés fonctionnalisés correspondant à la formule générale (I); elle concerne également des intermédiaires destinés à la préparation du 1,4,7,10-tétraazacyclododécane (II A) et de dérivés correspondants (II), par préparation de composés correspondant à la formule générale (III) puis par réduction ultérieure de ceux-ci.
Argese Maria
Brocchetta Marino
Manfredi Giuseppe
Rebasti Fabrizio
Ripa Giorgio
Bracco International Bv
Kirby Eades Gale Baker
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