摘要:
The invention is in the field of medical sciences. It provides new pharmaceutical methods and preparations. The invention relates to methods for improving the pharmacokinetic, physicochemical or pharmaceutical properties of drugs by converting the drug into a promoiety-containing 1-substituted disulfanylalkyl carbonate, thiocarbamate or carbamate prodrug. In particular, the invention relates to methods for improving the solubility, permeability, stability and/or oral bioavailability of a drug by converting the drug into a promoiety-containing 1-(disulfanylalkyl) carbonate, thiocarbonate or carbamate prodrug. The invention also provides new compositions comprising a drug covalently attached to a promoiety-containing 1-(disulfanylalkyl) carbonate, thiocarbonate or carbamate. More in particular, the invention relates to a method for increasing the oral bioavailability of a drug by covalently attaching a promoiety-containing 1-disulfanylalkyloxycarbonyl unit to a hydroxyl or amine containing drug in which the promoiety contains a 1-O—, 1-S—, 6-O— or 6-S-linked monosaccharide.
摘要:
Disclosed are monomers for copolymerization with alkenes, dienes, vinyl compounds, and/or vinylidene compounds, a process for preparing a copolymer, a copolymer prepared by the process, a sulfur-crosslinkable rubber mixture, and the use of the sulfur-crosslinkable rubber mixture for production of motor vehicle tires. In one embodiment, the monomer has the formula A-S-P, wherein A is a chemical group containing at least one C═C aliphatic double bond, S is a sulfur atom, and P is a protecting group.
摘要:
The present invention provides both crosslinked polymer compositions capable of forming hydrogels upon exposure to an aqueous environment and thiosulfonate hydrogel-forming components. The thiosulfonate hydrogel-forming components of the invention are preferably multi-arm thiosulfonate polymer derivatives that form a crosslinked polymer composition when exposed to a base without requiring the presence of a second cross-linking reagent, redox catalyst, or radiation. Methods for forming hydrogel compositions, as well as methods for using the hydrogels, are also provided.
摘要:
The present application relates to a compound of formula AiXi where Ai is an organic onium cation; and Xi is an anion of the formula X—CF2CF2OCF2CF2—SO3−. The compounds are useful as photoactive materials.
摘要:
The present invention relates to a process for producing amino/guanidinothiosulfonic acid, which comprises treating a styrenedivinylbenzene copolymer sulfonate of amino/guanidinoethyl disulfoxide into contact with an alkali, selectively eluting amino/guanidinosulfinic acid, then reacting this product in a non-aqueous solvent in the presence of a base, and passing the reaction product through a weakly acidic cation exchange resin column; in accordance with the present invention, hypotaurine, thiotaurine and the like having a high purity can industrially be produced.
摘要:
A compound represented by Formula IMO.sub.2 S--Z--SO.sub.2 SM.sup.1 (I)wherein Z is a non-metallic arylene, alkylene or heterocyclic group, and M and M.sup.1 are independently cationic counter ions and the use of said compound in a silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole % silver chloride.
摘要:
Onion flavoring compounds, including thioalkanal-S-oxides and alkyl alkene thiosulfonates, methods for preparing and using such compounds, and compositions so obtained.
摘要:
This invention relates to novel thio-alkanal-S-oxides of the formula R=S=O wherein R is a straight-chain alkylidene group having from two to six carbon atoms. These novel compounds are useful to alter the flavor of consumable products. They may be prepared by reacting an alkyl sulfinyl chloride and a lower tertiary amine at a temperature below about -50* C.
摘要翻译:本发明涉及式R = S = O的新的硫代 - 链烷醛S-氧化物,其中R是具有2-6个碳原子的直链亚烷基。 这些新型化合物可用于改变消费品的味道。 它们可以通过在低于约-50℃的温度下使烷基亚磺酰氯和低级叔胺反应来制备。