摘要:
The present invention pertains generally to the field of chemical synthesis, and more particularly to methods of chemical synthesis which include the step of preparing a substituted 10H-phenothiazine-3,7-diamine compound of Formula (1) by a step of selective alkylation by reductive amination, in which the corresponding unsubstituted diamine of Formula (4) is reacted with aldehyde/ketone, under reductive amination conditions. The present invention also relates to such methods which incorporate additional subsequent and/or preceding steps, for example, to prepare compounds of Formulae (2) and (3) from compounds of Formula (1), and to prepare compounds of Formula (4) from, for example, compounds of Formulae (5), (6), (7), (8), and (9). Compounds of Formula (1), Formula (2), and Formula (3) are useful, for example, in the treatment of diseases of protein aggregation, such as Alzheimer's disease.
摘要:
A process for the purification of diaminophenothiazinium compounds, and particularly of methylene blue, is described. The process provides for simple and affective purification by reduction of the post-synthesis or commercially available diaminophenothiazinium compound to form a reduced complex thereof. This can then be purified in a more straightforward mann&r than the original compound by, for example, recrystaliisation before being allowed to oxidise back to the diaminophenothiazinium compound.
摘要:
The present invention provides novel phenazine derivatives, such as compounds of Formula (I) (e.g., Formulae (II) - (XIX)), and pharmaceutically acceptable salts thereof. The compounds of the invention are expected to be antimicrobial agents and may act by a microbial warfare strategy (e.g., a reactive oxygen species (ROS)-based competition strategy). The present invention also provides pharmaceutical compositions, kits, uses, and methods that involve the compounds of the invention and may be useful in preventing or treating a microbial infection (e.g., a bacterial infection or mycobacterial infection) in a subject, inhibiting the growth and/or reproduction of a microorganism (e.g., a bacterium or mycobacterium), killing a microorganism (e.g., a bacterium or mycobacterium), inhibiting the formation and/or growth of a biofilm, reducing or clearing a biofilm, and/or disinfecting a surface.
摘要:
A lubricant composition includes a base oil present in an amount of greater than 70 parts by weight per 100 parts by weight of the lubricant composition and an antioxidant. The antioxidant has the structure: wherein each X is independently CH or N, so long as at least one X is N, wherein Y is CRR', NR", PR", S, or O, each R, R' and R" is independently H, alkyl or aryl, and R" is alkyl, aryl, alkoxy or aryloxy. Each A is independently an electron donating group. The electron donating group (1) has an atom having at least one lone pair of electrons that is bonded directly to the aromatic ring, (2) is an aryl or alkyl group, or (3) is a hydrogen atom.
摘要:
The invention relates to compounds of general formula (I): wherein: each of R1 and R9 is independently selected from: -H, C1-4alkyl, C2-4alkenyl, and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: -H, C1-4alkyl, C2-4alkenyl, and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: -H, C1-4alkyl, C2-4alkenyl, and halogenated C1-4alkyl; and wherein: each of RA and RB is independently selected from: C1-4alkyl, halogenated C1-4alkyl, and C6-10aryl; or RA and RB are linked to form a group selected from: C1-6 alkylene and C6-10 arylene; and pharmaceutically acceptable salts thereof, which are useful in the treatment of, for example, Alzheimer's disease. In other aspects the invention also relates to novel formulations of 3,7-diamino-10H-phenothiazinium salts.
摘要:
The invention relates to compounds of general formula (I): wherein: each of R 1 and R 9 is independently selected from: -H, C 1-4 alkyl, C 2-4 alkenyl, and halogenated C 1-4 alkyl; each of R 3NA and R 3NB is independently selected from: -H, C 1-4 alkyl, C 2-4 alkenyl, and halogenated C 1-4 alkyl; each of R7NA and R7NB is independently selected from: -H, C 1-4 alkyl, C 2-4 alkenyl, and halogenated C 1-4 alkyl; and wherein: each of R A and R B is independently selected from: C 1-4 alkyl, halogenated C 1-4 alkyl, and C 6-10 aryl; or R A and R B are linked to form a group selected from: C 1-6 alkylene and C 6-10 arylene; and pharmaceutically acceptable salts thereof, which are useful in the treatment of, for example, Alzheimer's disease. In other aspects the invention also relates to novel formulations of 3,7-diamino-10H-phenothiazinium salts.