摘要:
There are disclosed novel processes for producing 2′,3′-dideoxy-2′3′-didehydronucleosides, for example, 2′,3′- dideoxy-2′,3′-didehydrothymidine in high yields and on a large scale. The compounds so-produced are useful as antiviral agents, especially as agents effective against the human immunodeficiency viruses (HIV).
摘要:
Novel cephem derivatives represented by the general formula
in which the Acyl substituent is a group of the formula
wherein Ar is a lipophilic optionally substituted phenyl, naphthyl, pyridyl or benzthiazolyl group; R 1 is selected from certain optionally substituted aliphatic, aromatic, arylaliphatic or sugar moieties and R 2 and R 3 are each independently hydrogen, alkyl or aminoalkylcarbonylamino are gram-positive antibacterial agents, especially useful in the treatment of infectious diseases caused by methicillin-resistant Staphylococcus aureus (MRSA).
摘要:
There are disclosed novel processes for producing 2′,3′-dideoxy-2′3′-didehydronucleosides, for example, 2′,3′- dideoxy-2′,3′-didehydrothymidine in high yields and on a large scale. The compounds so-produced are useful as antiviral agents, especially as agents effective against the human immunodeficiency viruses (HIV).
摘要:
This invention relates to a compound of formula I
in which T is -CONH- or -CH=CH-; R a and R b are independently C 1-6 alkyl; R c is C 1-6 alkyl or hydrogen; and R is heteroaryl; or a non-toxic pharmaceutically-acceptable salt, physiologically-hydrolyzable ester or solvate thereof.
摘要翻译:本发明涉及式I化合物,其中T是-CONH-或-CH = CH-; Ra和Rb独立地为C1-6烷基; R c是C 1-6烷基或氢; 和R是杂芳基; 或其无毒的药学上可接受的盐,生理学上可水解的酯或溶剂合物。
摘要:
Biaryl compounds, effective phospholipase A₂ (PLA₂) inhibitors of Formulas I and II:
wherein:
Y = COOH, CH₂CO₂H, H, F, Cl, Br, I, COOR', CH₂CO₂R', CONH₂, COR'', CHO, CH₂OH, CH₂OR'', OH, OR'', CF₃, C₁₋₆ alkyl, C₁₋₆ alkenyl, C₁₋₆ haloalkyl, NO₂, P(O) (OH)₂, SO₂H, or SO₃H; Z = H, F, Cl, Br, I, CONH₂, COR'', CHO, CH₂OH, CH₂OR'', OH, OR'', CF₃, C₁₋₆ alkyl, C₁₋₆ alkenyl, C₁₋₆ haloalkyl, NO₂, P(O)(OH)₂, SO₂H, or SO₃H; X = (CH₂) n , n = 0, 1, or 2; or a cis or trans CH=CH; R = substituted or unsubstituted alkyl, aryl, arylalkyl, alkyloxy, arylalkyloxy, alkenyl, or arylalkenyl groups with the proviso that R must have 8 or more carbons; R' = H, C₁₋₆ alkyl, C(R¹)₂OC(O)R², CH₂CH₂NR³R⁴, CH₂CH₂CH₂NR³R⁴, or other groups yielding physiologically hydrolyzable esters; R'' = C₁₋₆ alkyl; R¹ = H, CH₃, C₂H₅, CH₂CH₂CH₃; R₂ = C₆₋₁₂ aryl, C₁₋₇ linear, branched or cyclic alkyl, or C₁₋₇ linear branched or cyclic alkoxy; R³ = R⁴, or, it may be linked with R⁴, to form a C₃-C₆ cycloalkyl or a -CH₂CH₂OCH₂CH₂- group; and R⁴ = C₁₋₃ alkyl; or salts thereof.
摘要:
There are disclosed novel 2′,3′-dideoxy-2′-fluoronucleosides and 2′-3′-dideoxy-2′,3′-didehydro-2′-fluoronucleosides and processes for their preparation. The compounds so produced exhibit therapeutically useful antiviral and, more particularly, anti-HIV effects.
摘要:
Certain 3′-substituted methyl nucleosides are disclosed which are useful in the treatment of viral infections, e.g., infections caused by herpes simplex virus types 1 and 2, and/or are useful as intermediates in the preparation of 3′-substituted methyl nucleosides having antiviral activity. In accordance with one aspect of the invention, there are provided novel 3′-substituted methyl nucleosides represented by Formulas I and II wherein: B indicates that B can be either alpha or beta; B is a member selected from the group consisting of the pyrimidine and purine nucleoside bases connected to the tetrahydrofuran ring through the N¹ heterocyclic nitrogen atom of the pyrimidines and the N⁹ or N⁷ heterocyclic nitrogen atom of the purines including the naturally occurring nucleoside bases and 5-fluoro, 5-bromo, 5-iodo, 5-chloro, 5-trifluoromethyl, 5-ethyl, 5-(2-bromovinyl)uracil; triazolecarboxamide; 2-aminopurine; 2,6-diaminopurine; 4-chloropyrimidine; pyrimidine; azapyrimidine; purine; 2,6-dichloropurine; 2-amino-6-chloropurine; and deazapurine; R and Q are either both hydrogen or halogen, especially fluorine, or one is hydrogen and the other one is hydroxy or halogen, especially fluorine; in Formula I at least one of R and Q is halogen; and X and Y can be the same or different and are selected from the group consisting of O-alkyl, O-aryl, O-acyl-, halogen, especially fluorine, azido, amino, acylamido, -SH, S-alkyl and S-aryl, or one of X or Y can be hydroxy, or X may be the group R¹O and Y may be the group R²O wherein R¹ and R² are hydrogen or hydroxy-protecting groups. Preferred O-alkyl and S-alkyl groups contain from one to four carbon atoms; preferred O-aryl and S-aryl groups contain from 6 to 10 carbon atoms; and preferred O-acyl groups contain from one to four carbon atoms.