摘要:
The present invention is a pyrazine derivative which has glutamate receptor antagonizing activity, represented by formula: ##STR1## wherein Z represents C or N, provided that two Zs are not N atoms at the same time; R.sup.1 represents: ##STR2## wherein ##STR3## represents ##STR4## R.sup.6 represents H or alkyl, and R.sup.7 and R.sup.8 represent each H, alkyl, nitro or phenyl, or alternatively R.sup.7 and R.sup.8 are combined together to represent butadienylene or 1,4-butylene; R.sup.2 and R.sup.3 represent each H, F, cyano, acyl, nitro, alkyl, morpholino or one of said species of R.sup.1 ; R.sup.4 and R.sup.5 represent each H, hydroxyl, alkyl, cycloalkyl, heterocycle, phenyl, or Y-substituted alkyl; Y represents hydroxyl, acyloxy, F-substituted methyl, cycloalkyl, tetrahydrofuryl, carboxyl, alkoxycarbonyl or ##STR5## R.sup.9 and R.sup.10 represent each H or alkyl, or alternatively R.sup.9 and R.sup.10 are combined together to represent a 5- or 6-membered cyclic group which may contain oxygen atom(s).
摘要:
Imidazole-substituted quinoxalinedione derivatives represented by the following general formula (I) or pharmaceutically acceptable salts thereof and pharmaceutical compositions useful as glutamate receptor antagonists and the like, which comprise said compounds or salts thereof and pharmaceutically acceptable carriers. ##STR1## (Each symbol in the formula has the following meaning: A: a group represented by a formula (CH.sub.2).sub.m or a group represented by a formula Ph--(CH.sub.2).sub.p (Ph: a phenyl group),X: an oxygen atom or a group represented by a formula NR.sup.4,R.sup.1 : a hydrogen atom, a hydroxyl group or a triazolyl group, with the proviso that X may be a bond when R.sup.1 is a triazolyl group,R.sup.2 : a hydrogen atom, a nitro group, a halogeno-lower alkyl group, a cyano group, an amino group, a mono- or di-lower alkylamino group or a halogen atom,R.sup.3 and R.sup.4 : may be the same or different from each other and each represents a hydrogen atom or a lower alkyl group,n: 0, 1 or 2,m: an integer of 2 to 6, andp: an integer of 1 to 6.
摘要:
A 1,2,3,4-tetrahydroquinoxalinedione derivative represented by the following formula (I) or salt thereof, an NMDA-glycine receptor and/or AMPA receptor antagonist or kainic acid neurotoxicity inhibitor containing the derivative or salt. In addition, a pharmaceutical composition comprising said compound and a pharmaceutically acceptable carrier: ##STR1## wherein the substituents are as described in the specification.
摘要:
This invention relates to novel thiazolo[3,2-a]benzoimidazole derivatives represented by the following general formula (I). The compounds provided by the invention act specifically on metabotropic glutamate receptors and are used as medicaments. The invention also provides novel compounds useful as intermediates for the synthesis of the compounds of the invention. (Symbols in the formula represent the following meanings. R1: carbamoyl, carbonyl, oxy, amino, carbonylamino or the like which may be substituted; R2: hydrogen, lower alkyl or the like; and R3, R4 and R5: hydrogen, lower alkyl and the like which may be the same or different from one another.)
摘要翻译:本发明涉及由以下通式(I)表示的新型噻唑并[3,2-a]苯并咪唑衍生物。 本发明提供的化合物特异性地代表代谢型谷氨酸受体并用作药物。 本发明还提供了可用作合成本发明化合物的中间体的新化合物(式中的符号表示以下含义:R 1:可以被取代的氨基甲酰基,羰基,氧基,氨基,羰基氨基等 R 2:氢,低级烷基等; R 3,R 4和R 5:氢,低级烷基等可以彼此相同或不同。)
摘要:
Neuroprotective agents based on inhibition of kainic acid neurotoxicity and compounds useful as neuroprotective agents based on inhibition of kainic acid neurotoxicity. An inhibitors of kainic acid neurotoxicity, comprising as an active ingredient a pyridothiazine derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof, and a pyridothiazine derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein symbols in the formula have the following respective meanings: the ring A: a pyridine ring; ##STR2## R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each represent a hydrogen atom or a lower alkyl, cycloalkyl, alkenyl, aryl, carboxyl or lower alkoxycarbonyl group which may have substituent(s), or are not present, with the proviso that R.sup.2 and R.sup.3 may together form a nitrogen-containing heterocyclic group which may have nitrogen atoms as another hetero atom, may be fused with a benzene ring and may have a lower alkyl group as a substituent.
摘要:
A glasses-type shutter holder may include left and right temple parts connected respectively to left and right frame end parts of frame. The left and right temple parts may be foldable respectively with respect to the left and right frame end parts in accordance with movement, for each frame end part and temple part pair, of a contact position at which a movement part provided with one of the temple part and the frame end part of the pair is in contact with a contact part of the other of the temple part and the frame end part of the pair. For each of the pairs, the contact part is in contact with the movement part when the temple part is unfolded to a maximum degree, and a maximum degree of opening of the temple part is varied in accordance with the movement of the movable part.
摘要:
A method of making a steel sheet for a tension mask, including the steps of: hot rolling a steel consisting essentially of, by weight %, C: less than 0.1%, Si: 0.05% or less, Mn: 0.4 to 2%, P: 0.03% or less, S: 0.03% or less, sol.Al: 0.01% or less, N: 0.010% or more, and the balance of Fe; and annealing the cold rolled steel sheet, followed by a secondary cold rolling at a reduction rate of 35% or higher. The steel sheet produced by this method shows excellent creep resistance during blackening treatment and excellent magnetic shielding property with an anhysteretic permeability of 3400 or more at a DC bias magnetic field of 0.35 Oe, and therefore causes no color-deviation when applied to the tension mask.
摘要:
In a casting process using a resin core, sometimes molten resin remains in a cast product after the steps of withdrawal of the resin core from the cast product. In order to solve the problem, as a material of the resin core, a resin which is hard and not deformed against high temperature and high pressure of molten metal until the molten metal is solidified and is softened with an increase of temperature beyond the temperature at which the metal is solidified is used. The resin core is withdrawn from the cast product after it is softened but before it is melted. The softened core is pulled out from the cast product without being broken apart.
摘要:
A method for manufacturing a stereoscopic image display apparatus includes a bonding step of bonding an image display panel and a phase difference element by disposing an adhesive layer between the entire surfaces thereof, the image display panel displaying a right-eye image and a left-eye image by regularly mixing them in a plane, the phase difference element including a right-eye image display section corresponding to the right-eye image and a left-eye image display section corresponding to the left-eye image, the phase difference element achieving different polarizations between the right-eye image display section and the left-eye image display section, the adhesive layer being composed of a transparent gel acrylic adhesive with a thickness of 25 to 100 μm, hardness of the adhesive being more than 0 and 350000 μN or less, holding strength of the adhesive at 40° C. after bonding being 8 to 20 N/20 mm.
摘要:
A novel β-amylase having excellent practical applicability is found, and an object is to provide a practical use of the β-amylase. Provided is a method for improving a food, which is characterized in that a β-amylase derived from Bacillus flexus is acted on a food containing a polysaccharide or an oligosaccharide having an α-1,4 bond of glucose as the main chain.