A compound which is a thienolate of formula (I) or a pharmaceutically acceptable salt thereof: (I) wherein R.sup.1, R.sup.3, Ring A1, n and Ring A2 are as defined herein, are found to be useful in inhibiting metallo-beta-lactamase and therefore in potentiating the activity of beta lactamase antibiotics. The compound can be used alone or in combination with a rhodanine of formula (II) or a pharmaceutically acceptable salt thereof: (II) wherein R.sup.3, Ring A1, n, Ring A2, L and Ring B are as defined herein. Treatment or prevention of bacterial infection in combination with beta-lactam antibiotic agents is also provided.

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The invention relates to chemically reactive and/or biologically active compounds, reagents and compositions thereof. More particularly, the invention provides novel reagents that are useful in chemical synthesis, functionalization, delivery, probing and/or analytical measurements of small molecule drugs, proteins, antibodies and other biomolecules. The invention provides novel biologically active agents useful as diagnostics or therapeutics, and related composition and methods of uses thereof.

Compounds provided herein function as thyromimetics and have utility for treating diseases such as neurodegenerative disorders and fibrotic diseases. Pharmaceutical compositions containing such compounds are also provided, as are methods of their preparation.

Disclosed are a low-migration hindered phenol antioxidant compound, a preparation method and a composition. During production, processing or use, polymers experience degradation due to factors such as light, oxygen and heat. The oxidation resistance thereof is often increased by adding one or more common antioxidants, thereby inhibiting and delaying the rate if oxidative degradation thereof. The structures of traditional hindered phenolic antioxidant compounds migrate in polymers. The hindered phenolic antioxidant compound of the present invention has more hindered phenol units, and can achieve the objectives of low extraction and low migration.

Disclosed are a low-migration hindered phenol antioxidant compound, a preparation method and a composition. During production, processing or use, polymers experience degradation due to factors such as light, oxygen and heat. The oxidation resistance thereof is often increased by adding one or more common antioxidants, thereby inhibiting and delaying the rate if oxidative degradation thereof. The structures of traditional hindered phenolic antioxidant compounds migrate in polymers. The hindered phenolic antioxidant compound of the present invention has more hindered phenol units, and can achieve the objectives of low extraction and low migration.

The present invention provides novel hydroquinone derivatives of formula (I), processes of preparation, as well as pharmaceutical compositions and methods of treating and/or preventing e.g. autoimmune, immunological, rheumatology, vascular disorders, ophthalmologic disorders, fibrotic disorders, metabolic and gastrointestinal disorders, neuroinflammatory and neurodegenerative diseases, neoplasms and cancer associated disorders, hormone related diseases and immunological disorders resulting from viral and bacterial infectious diseases and complications thereof. wherein R.sub.1 is COOR.sub.4, (CH.sub.2)nCOOR.sub.4, SO.sub.3H, (CH.sub.2)nSO.sub.3H or CONH—R.sub.10; one of R.sub.2 and R.sub.3 is H and the other is R.sub.5.

##STR00001##

The present invention relates to a method for preparing a compound T having a thioether group from a compound D having a disulfide group in the presence of a carbene.

The present invention relates to a method for preparing a compound T having a thioether group from a compound D having a disulfide group in the presence of a carbene.

The present invention relates to novel sulfur derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of chemokine receptors.

The present invention relates to novel sulfur derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of chemokine receptors.