摘要:
Disclosed are chemical agents with unexpected antimicrobial activity against the microbes, especially Porphyromonas gingivalis, known to be important in the cause and progression of gingivitis, periodontitis, and destruction of hard and soft oral tissues leading to tooth loss. The agents have additional unexpected anticollagenase activity useful in the direct mitigation of tissue damage. The agents can be formulated to produce various compositions and dental implements useful in management of peridental diseases, particularly those involving infection with certain gram-negative anaerobes.
摘要:
A method for inhibiting retroviral infection in a subject comprising administering to said subject a therapeutically effective amount of a naphthalenesulfonic acid compound or a pharmaceutically acceptable salt thereof, as herein defined.
摘要:
A photoresponsive liposome which comprises a compound represented by the following general formula (I): ##STR1## wherein R.sub.1 is an alkyl group; R.sub.2, R.sub.3, R.sub.4 and R.sub.5, which may be the same or different, are selected from the group consisting of an alkyl group, a substituted alkyl group, an alkoxy group, a substituted alkoxy group, a halogen atom and a hydrogen atom; R.sub.6 and R.sub.7, which may be the same or different, are an alkyl group or a hydrogen atom; n is an integer of 1 to 2; and X represents a hydrophilic group, a hydrophobic group or a combination of hydrophilic and hydrophobic groups, bonded through a connecting group, provided that any of these hydrophilic and hydrophobic groups has such properties that the compound represented by the general formula (I) becomes available as a component forming the membrane of liposome.
摘要:
A method of producing a dyed polysaccharide which comprises linking a dye, capable of linking to amino group or imino group, to a starch derivative having a glucose derivative unit shown in a general formula [I] as a partial structure of the starch derivative. ##STR1## In the formula [I], R represents an arylene group or an alkylene group, R.sub.1, represents hydrogen atom or an alkyl group, and X and Y represent linking portions to other portions of the starch molecule, respectively.According to the method of the invention, dyed polysaccharides can readily be obtained by using a commercial reactive dye at room temperature under neutral conditions.
摘要:
A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains a blocked photographic agent represented by the following general formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R.sup.1 represents a hydrogen atom or a substituent group; and Z represents atoms necessary to form a carboxylic ring or a heterocyclic ring. The blocked photographic agent is completely stable upon storage of the photographic material, and releases a photographic agent at a desired time upon processing of the photographic material. The blocked photographic agent also exhibits its function to a substantial degree over a wide range.
摘要:
A silver halide photosensitive material is described, comprising a support and at least one silver halide emulsion layer, wherein said emulsion layer or another layer contains a compound represented by formula (I) ##STR1## wherein X represents an atomic group forming a redox center of benzene type having substituents by linking with C.sub.A and C.sub.B, and which does not enable Time-PUG to be released until the redox center is oxidized during development processing; EWG represents an electron withdrawing group having a Hammet's .sigma. para value exceeding 0.3; C.sub.A and C.sub.B each represents a carbon atom; R.sub.1 and R.sub.2 each represents a hydrogen atom or a suitable substituent; Time represents a timing group connecting to C.sub.B through a sulfur, nitrogen, or selenium atom thereof, t is an integer of 0 or 1, and when t=0, Time is a chemical bond; PUG represents a photographically useful group and connects to C.sub.B through a sulfur, nitrogen, or selenium atom thereof when t=0; and n is an integer of 0 or 1.
摘要:
A silver halide photographic light-sensitive material is described, comprising a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a blocked photographic agent represented by formula (I) ##STR1## wherein A represents a photographically useful agent moiety, which may have a timing group; X.sup.1 and X.sup.2 each represents a carbonyl group, a sulfonyl group, or a sulfinyl group; Z represents an atomic group forming a 5-membered, 6-membered, or 7-membered ring; R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, an alkoxy group, an acyl group, a sulfonyl group, or a heterocyclic group; R.sup.3 represents an alkyl group, an alkenyl group, a cycloalkyl group, a heterocyclic group, an aryl group, or an aralkyl group; m represents 0, 1, or 2; n represents 0 or 1; and the total of m+n is 1, 2, or 3. The precursor of photographic agent is completely stable during the preservation of the photographic light-sensitive material and releases a photographically useful agent at a desired time during processing of the photographic light-sensitive material. The precursor can exhibit its function to a substantial degree under mild conditions, such as in a pH range of from 9 to 12.
摘要:
Disclosed is a compound represented by the Structural Formula (I): Y is a covalent bond, a phenylene group or a substituted or unsubstituted straight chained hydrocarbyl group. In addition, Y, taken together with both >C═Z groups to which it is bonded, is a substituted or unsubstituted aromatic group. Preferably, Y is a covalent bond or —C(R7R8)—. R1 and R2 are independently an aryl group or a substituted aryl group, R3 and R4 are independently —H, an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group. R5-R6 are independently —H, an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group. R7 and R8 are each independently —H, an aliphatic or substituted aliphatic group, or R7 is —H and R8 is a substituted or unsubstituted aryl group, or, R7 and R8, taken together, are a C2-C6 substituted or unsubstituted alkylene group. Z is ═O or ═S. Also disclosed are pharmaceutical compositions comprising the compound of the present invention and a pharmaceutically acceptable carrier or diluent.Also disclosed is a method of treating a subject with cancer by administering to the subject a compound of Structural Formula (I) in combination with Paclitaxel or an analog of Paclitaxel.
摘要翻译:公开了由结构式(I)表示的化合物:Y是共价键,亚苯基或取代或未取代的直链烃基。 此外,Y与它所键合的两个> C = Z基团一起是取代或未取代的芳族基团。 优选Y为共价键或-C(R 7 R 8) - 。 R 1和R 2独立地是芳基或取代的芳基,R 3和R 4独立地是-H,脂族基团,取代的脂族基团,芳基或取代的芳基。 R5-R6独立地是-H,脂族基团,取代的脂族基团,芳基或取代的芳基。 R 7和R 8各自独立地为-H,脂族或取代的脂族基团,或者R 7为-H且R 8为取代或未取代的芳基,或者R 7和R 8一起为C 2 -C 6取代或未取代的亚烷基 。 Z为═O或═S。 还公开了包含本发明化合物和药学上可接受的载体或稀释剂的药物组合物。 还公开了通过向受试者施用结合式(I)的化合物与紫杉醇或紫杉醇的类似物组合来治疗患有癌症的受试者的方法。
摘要:
A method for preparing a xanthohumol-rich hop composition. The method includes providing a solution that contains xanthohumol-containing hop substances and effecting precipitation of non-xanthohumol hop substances by adjusting both the salt concentration and pH value of the solution. The xanthohumol-rich hop composition prepared by this method can be used for treating various diseases, e.g., skin disorders, and bacterial infection.