Abstract:
Semisynthetic antibiotics with improved therapeutic properties are disclosed. In particular, 9-R-azacyclic derivatives of erythromycin, its derivatives, and their salts and esters show superior antimicrobial activity compared to other macrolide compounds.
Abstract:
Disclosed are compounds of formula (I) which are useful for inhibiting neuraminidases from disease-causing microorganisms, especially, influenza neuraminidase. Also disclosed are compositions and methods for preventing and treating diseases caused by microorganisms having a neuraminidase, processes for preparing the compounds and synthetic intermediates used in these processes.
Abstract:
Isothiazolo-quinoline derivatives of the formula I which may exist as tautomers (formula II) are described which are cytotoxic for various tumor cell lines and are useful in the treatment of neoplastic diseases. wherein R is selected from (a) lower alkyl, (b) haloalkyl, (c) lowercycloalkyl, (d) alkylamino, (e) an aromatic heterocyclic group and (f) a phenyl group; W, X and Z are independently selected from hydrogen, halogen and lower alkyl; and Y is selected from a (a) phenyl group, (b) -NR₂R₃, (c) a bicyclic N-containing heterocyclic group, and (d) -OR₁₀, wherein R₁₀ is hydrogen, lower alkyl or a phenyl group; or any two of W, X, Y and Z taken together form a fused, substituted or unsubstituted, aromatic group or heterocyclic group.
Abstract:
A compound of the formula I, II or III is disclosed as a prodrug of an HIV protease inhibitor. Methods and compositions of inhibiting HIV protease activity and treating HIV infection are also disclosed.
Abstract:
Isothiazolo-quinoline derivatives of the formula I which may exist as tautomers (formula II) are described which are cytotoxic for various tumor cell lines and are useful in the treatment of neoplastic diseases. wherein R is selected from (a) lower alkyl, (b) haloalkyl, (c) lowercycloalkyl, (d) alkylamino, (e) an aromatic heterocyclic group and (f) a phenyl group; W, X and Z are independently selected from hydrogen, halogen and lower alkyl; and Y is selected from a (a) phenyl group, (b) -NR₂R₃, (c) a bicyclic N-containing heterocyclic group, and (d) -OR₁₀, wherein R₁₀ is hydrogen, lower alkyl or a phenyl group; or any two of W, X, Y and Z taken together form a fused, substituted or unsubstituted, aromatic group or heterocyclic group.
Abstract:
Semisynthetic antibiotics with improved therapeutic properties are disclosed. In particular, 9-R-azacyclic derivatives of erythromycin, its derivatives, and their salts and esters show superior antimicrobial activity compared to other macrolide compounds.
Abstract:
A compound of the formula I, II or III is disclosed as a prodrug of an HIV protease inhibitor. Methods and compositions of inhibiting HIV protease activity and treating HIV infection are also disclosed.