摘要:
Compounds represented by formula (I) and the formula (IV) have an inhibitory activity of MMP-9 production, therefore, are useful as a medicine agent with fewer side effects than conventional MMP enzyme activity inhibitors, as a prophylactic and therapeutic drug for oncogenic angiogenesis, chronic rheumatoid arthritis, vascular intimal thickening after a percutaneous coronary transluminal angioplasty, vascular atherosclerosis, hemorrhagic apoplexy, acute myocardial infarction, chronic heart failure, aneurysm, lung cancer metastasis, adult respiratory distress syndrome, asthma, interstitial pulmonary fibrosis, chronic rhinosinusitis, bronchitis or chronic obstructive pulmonary disease (COPD).
摘要:
A 3-carbamoylated 5-O-desosaminyl-6-O-methylerythronolide derivative represented by general formula (I) and a pharmaceutically acceptable acid addition salt thereof, which are novel macrolide antibiotics with a potent antibacterial power, wherein R¹ and R² each represent hydrogen, phenyl optionally substituted by halogen, nitro or amino, alkyl optionally containing nitrogen, oxygen or sulfur, or aralkyl, or alternatively R¹ and R² are combined together with the nitrogen atom to form a nitrogenous ring; Z represents oxo or hydroxyimino; V represents hydroxy; W represents hydrogen or hydroxy, or alternatively V and W are combined together to form a cyclic carbonate group or an oxazoline ring; and R represents hydrogen or acyl.
摘要:
[Object]: To provide a compound having a novel structure effective against Hemophilus influenzae and erythromycin resistant bacteria (for example, resistant pneumococci and streptococci) as well as against conventional erythromycin sensitive bacteria. [Solution]: A novel 10a-azalide compound represented by the formula (I), a pharmaceutically acceptable salt thereof or a solvate thereof, or an intermediate for the preparation of the same. The compound of the present invention has superior antibacterial activity against Hemophilus influenzae , erythromycin resistant pneumococci and the like, and therefore, the compound can be used as a therapeutic agent of infectious diseases.
摘要:
A novel macrolide antibiotic having a potent antimicrobial activity, represented by general formula (1), which is produced by introducing a specified aryloxy or alkyloxy group into the 3-position of a 5-O-desosaminylerythronolide derivative, wherein Y represents oxygen-containing C₄-C₆ cycloalkyl, optionally substituted phenyl, glucopyranosyl, ribopyranosyl, benzyl or methyl; U represents hydrogen or acyl; Z represents oxygen or N-OR₁ wherein R₁ represents hydrogen, alkanoyl or optionally substituted benzyl; and A represents a group that forms an erythronolide which may form a cyclic carbonate group between the 11- and the 12-positions or a double bond between the 10- and 11-positions.
摘要:
A 10a-azalide compound having a 4-membered ring structure crosslinked at the 10a- and 12-positions, which is represented by the formula (I), and is effective on even Haemophilus influenzae, or erythromycin resistant bacteria (e.g., resistant pneumococci and streptococci).
摘要:
A 3-carbamoylated 5-O-desosaminyl-6-O-methylerythronolide derivative represented by general formula (I) and a pharmaceutically acceptable acid addition salt thereof, which are novel macrolide antibiotics with a potent antibacterial power, wherein R?1 and R2¿ each represent hydrogen, phenyl optionally substituted by halogen, nitro or amino, alkyl optionally containing nitrogen, oxygen or sulfur, or aralkyl, or alternatively R?1 and R2¿ are combined together with the nitrogen atom to form a nitrogenous ring; Z represents oxo or hydroxyimino; V represents hydroxy; W represents hydrogen or hydroxy, or alternatively V and W are combined together to form a cyclic carbonate group or an oxazoline ring; and R represents hydrogen or acyl.
摘要:
A macrolide compound represented by the formula (I) effective against erythromycin resistant bacteria (for example, resistant pneumococci, streptococci and mycoplasmas).
摘要:
A novel 10a-azalide compound crosslinked at the 10a- and 12-positions, which is represented by the following formula, and is effective on even Hemophilus influenzae , or erythromycin resistant bacteria (e.g., resistant pneumococci and streptococci).
摘要:
There is provided a preparation process useful for an efficient synthesis of 6-O-substituted ketolide derivatives by combining a characterized step of introduction of a substituent at the 6-position by selective cleavage of a C-O bond of the cyclic acetal at the 9-position side via 6,9-cyclic acetal 5-O-desosaminyl erythronolide derivative, a step of conversion into carbonyl groups at the 9- and 3-positions, and a step of 11,12-cyclic carbamation to lead to 6-O-substituted ketolide derivatives.