Patent ID: 7399320
Filing Date: 2008-07-15
Classification: C07D,C09B

Abstract:
1. A tetraazapentamethine compound of formula (I′): wherein: W′ W′ wherein: Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ Z′ wherein each of the rings of formulae (II′), (III′), (IV′) and (V′) comprise not more than three nitrogen atoms and two of the three nitrogen atoms may be contiguous, the bond a of the 5-membered cationic heteroaromatic radical of formula (II′) being linked to the nitrogen atom N the bond b of the 6-membered cationic heteroaromatic radical of formula (III′) being linked to the nitrogen atom N the double bond a′ of the 5-membered heteroaromatic radical of formula (IV′) being linked to the nitrogen atom N the double bond b′ of the 6-membered heteroaromatic radical of formula (V′) being linked to the nitrogen atom N the bond b, linking the cationic heteroaromatic radical of formula (III′) to the nitrogen atom N the bond b′, linking the heteroaromatic radical of formula (V′) to the nitrogen atom N R′ R′ R′ R′ wherein R′ X is an organic or inorganic anion.