| 摘要 |
Pentacyclic derivatives of the general formulae Ia, Ib and Ic <IMAGE> are described in which R<1> and R<13> are identical or different and denote: hydrogen, alkyl having 1 to 20 carbon atoms, polyoxyhydrocarbyl, phenyl, phenylalkyl having 1 to 3 carbon atoms in the alkyl chain, in which the alkyl and/or phenyl radicals can be substituted by one or more hydroxy, halogen, sulfo, carboxyl or alkoxycarbonyl groups, in which alkoxy can have 1 to 4 carbon atoms; R<7> denotes an alkyl group having 1 to 7 carbon atoms, substituted by at least one halogen, or a carboxyalkyl group or a phenyl group which is substituted by a carboxyl or alkoxycarbonyl group situated in the o-position relative to the carbon atom bonded to the pentacyclic ring system and by at least one halogen, and which alkoxy can have 1 to 4 carbon atoms, or denotes a carboxymethylenoxy alkoxy group; the radicals R<14> and R<15> and the positions of the rings in the formulae marked by specific symbols denote any desired substituents which are optionally also bridged with one another; the two broken-line bonds marked in denote that the carbon atoms bonded by the broken-line bond can be bonded to one another by a single or double bond; and X<-> is a counter-ion; and their derivatives which are activated on at least one of the radicals R<1>, R<7> and/or R<13>. The compounds are used as an absorption or fluorescent dyestuff, in particular as a marker for hapten/antibody/protein conjugates, as laser dyestuffs and as an absorption medium for solar panels. |
