Abstract:
The present invention provides a novel alizarin derivative compound and a simplified and low cost method for preparing an alizarin derivative compound including: obtaining a compound represented by Formula (2) using a compound represented by Formula (3); and obtaining an alizarin derivative compound represented by Formula (1) using the compound represented by Formula (2); in Formulae (1) to (3), R 1 represents a hydrogen atom or a substituent; n represents an integer of 1 to 3, L represents a specific alkyl group; Q represents an atomic group needed to form an aromatic ring or a heteroaromatic ring with adjacent carbon atoms; and P represents an atomic group which includes an atom(s) selected from a hydrogen atom, a carbon atom, an oxygen atom, a sulfur atom, a silicon atom and a boron atom, and which is needed to form a ring structure group with adjacent two oxygen atoms and two carbon atoms; Formula (1) Formula (2) Formula (3).
Abstract:
Certain newly developed 9, 10-anthraquinone derivatives possess potent activity against O. perornata while possessing a sufficiently high level of solubility in water to make their activity against O. perornata viable. These compounds possess a high level of activity against O. perornata yet are relatively non-toxic to green algae and fishes. The compounds also possess a relatively short half-life. The compounds represent a new means to providing compounds possessing a high degree of selective activity against blue-green algae while being physiologically tolerated by catfish and green algae. The compounds provide a means for controlling blue-green algae in managed bodies of water that are destined for public use or consumption.
Abstract:
The invention relates to colouring and toning agents for keratinous fibres, in particular human hair, comprising at least one hydroxyanthraquinone derivative of formula (I), as a direct dye, in a cosmetically acceptable vehicle, where R = a group of formula (II), where R to R = independently, H; OH; C1 to C4 alkoxy; C1 to C4 alkyl; C1 to C4 fluoroalkyl; carboxy; NO2; halogen; a group of formula SR , where R = H or C1 to C4 alkyl; a group of formula PhCH2-COOR , where R = H, C1 to C4 alkyl or a physiologically acceptable cation or, any two neighbouring groups of R to R form a methylenedioxy ring and X = halogen. The inventive agents permit hair colouring with outstanding fastness.
Abstract:
Certain newly developed 9, 10-anthraquinone derivatives possess potent activity against O. perornata while possessing a sufficiently high level of solubility in water to make their activity against O. perornata viable. These compounds possess a high level of activity against O. perornata yet are relatively non-toxic to green algae and fishes. The compounds also possess a relatively short half-life. The compounds represent a new means to providing compounds possessing a high degree of selective activity against blue-green algae while being physiologically tolerated by catfish and green algae. The compounds provide a means for controlling blue-green algae in managed bodies of water that are destined for public use or consumption.
Abstract:
The invention relates to colouring and toning agents for keratinous fibres, in particular human hair, comprising at least one hydroxyanthraquinone derivative of formula (I), as a direct dye, in a cosmetically acceptable vehicle, where R = a group of formula (II), where R to R = independently, H; OH; C1 to C4 alkoxy; C1 to C4 alkyl; C1 to C4 fluoroalkyl; carboxy; NO2; halogen; a group of formula SR , where R = H or C1 to C4 alkyl; a group of formula PhCH2COOR , where R = H, C1 to C4 alkyl or a physiologically acceptable cation or, any two neighbouring groups of R to R form a methylenedioxy ring and X = halogen. The inventive agents permit hair colouring with outstanding fastness.