摘要:
Provided herein are organoselenium compounds and pharmaceutical compositions thereof. Also provided herein are methods of treatment, prevention, or amelioration of a variety of medical disorders using the compounds and pharmaceutical compositions provided herein. reactive oxygen and nitrogen species
摘要:
The present invention is directed to labeled compounds of the formula Ar-Zi-Q- Z2 where Ar is an aryl group is selected from the group consisting of 1-naphthyl, substituted 1-naphthyl, 2-naphthyl, substituted 2-naphthyl, and phenyl groups with the structure (I) wherein R 1 , R 2 , R 3 , R 4 and R 5 are each independently selected from the group consisting of hydrogen, a C 1 -C 4 lower alkyl, a halogen, a phenyl, an alkoxy group and an amino group from the group consisting of NH 2 , NHR and NRR' where R and R' are each a C 1 -C 4 lower alkyl, Q is selected from the group consisting of 13 CH 2 , 13 CDH and 13 CD 2 , and Z 1 is selected from the group consisting of -S-, -S(=O)-, -S(=O) 2 -, -Se-, -Se(=O)-, and -Se(=O) 2 -, Z 2 is selected from the group consisting of -Si(R 6 R 7 R 8 ), -O(R 9 ), -Se-Ar, -Se(=O) 2 -Ar, -Se(=O) 2 -Ar, -S-Ar, -S(=O)-Ar, and -S(=O) 2 -Ar wherein R 6 , R 7 and R 8 are each independently selected from the group consisting of a C 1 -C 4 lower alkyl, R 9 is a C 1 -C 4 lower alkyl or an R 10 -Ar group where R 10 is a C 1 -C 4 alkylene group.
摘要:
The invention relates to novel compounds corresponding to formula (I) below: and to the method for preparing them, and to their use in pharmaceutical compositions intended for use in human or veterinary medicine, or alternatively in cosmetic compositions.
摘要:
Substrates for thioredoxin reductase, containing compounds represented by general formula (1) or (1') (such as 2-phenyl-1,2-benzisoselenazol-3(2H)-one or open-ring derivatives thereof) (wherein R and R are each hydrogen, halogeno, trifluoromethyl, or the like; R is aryl, an aromatic heterocyclic group, or the like; R is hydrogen, hydroxyl, an -S- alpha -amino acid group, or the like; R is hydrogen or C1-C6 alkyl; Y is oxygen or sulfur; and n is an integer of 0 to 5, with the proviso that the selenium atom may be oxidized). These substrates are reduced by thioredoxin reductase in the presence of NADPH and enhance the peroxidase activity of thioredoxin reductase.
摘要翻译:含有由通式(1)或(1')表示的化合物的硫氧还蛋白还原酶的底物(例如2-苯基-1,2-苯并异硒唑-3(2H) - 酮或其开环衍生物)(其中R 1 >和R 2各自为氢,卤素,三氟甲基等; R 3为芳基,芳族杂环基等; R 4为氢,羟基,-S-α-氨基 酸基等; R 5为氢或C 1 -C 6烷基; Y为氧或硫; n为0〜5的整数,条件是硒原子可被氧化)。 这些底物在NADPH存在下被硫氧还蛋白还原酶还原,并增强硫氧还蛋白还原酶的过氧化物酶活性。
摘要:
The present invention is directed to compounds having at least two perfluorovinyl groups and having a structure represented by the following formula (I): CF2=CF-X-R-(X-CF=CF2)m, wherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and -CF=CF2; and m is an integer of from 1 to 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a process comprising the steps of: (a) forming a salt having anion corresponding to a compound of the following formula (II): HX-R-(XH)m, wherein X, R and m are as defined for formula (I); (b) reacting the salt formed in step (a) with a 1,2-dihalo-1,1,2, 2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of the following formula (III): Z-CF2CF2-X-R-(X-CF2CF2-Z)m, wherein X, R and m are as defined for formula (I) and each Z is independently iodine or bromine; and (c) eliminating the halogen atoms represented by Z to form the perfluorovinyl compound represented by formula (I).
摘要:
본 발명은 하기 화학식 1로 표시되는 칼코겐계 디아민과, 산 이무수물(acid dianhydride)의 중합 반응 생성물인 폴리아믹산, 이로부터 얻은 폴리이미드, 폴리이미드 필름 및 칼코겐계 디아민을 제공한다. [화학식 1] 상기 화학식 1에서, X 1 은 셀레늄(Se) 이산화셀레늄(SeO 2 ), 텔루늄(Te), 이산화텔루늄(TeO 2 ) 또는 그 조합물이고, Ar 1 및 Ar 2 는 각각 독립적으로 하기 화학식 1-1 내지 1-3로 이루어지는 그룹으로부터 선택되고, [화학식 1-1] [화학식 1-2] [화학식 1-3] 화학식 1-1 내지 1-3 중, *는 결합위치를 나타내고, R 1 내지 R 4 는 각각 독립적으로 수소, 불소, 탄소수 1 내지 30의 알킬기 및 탄소수 1 내지 30의 퍼플루오로알킬기로 이루어지는 그룹으로부터 선택된다.
摘要:
Organic compounds containing heteroatoms and their use in preparing Ziegler-Natta (Z-N) catalyst with single activation center. The Z-N olefin polymerization catalyst is prepared by adding organic or inorganic solid carrier or compound of them which is pre-activated by heating or pre-treated chemically, organic compound containing heteroatoms and metallic compound into magnesium compound/tetrahydrofuran solution. The Z-N olefin polymerization catalyst prepared in the present invention is fluidizable powder and can prepare ethene homopolymer and copolymer of controllable construction with high catalytic activity, during homo-polymerization and combined polymerization with alpha-olefin of C3~C18 under action of catalyst promoter such as alkyl aluminum, alkyl aluminoxane and so on.
摘要:
Novel ligands that are inhibitors of the RAR receptors, process for preparing them and use thereof in human medicine and in cosmetics. The invention relates to novel bicyclic compounds corresponding to the general formula (I) and to the method for preparing them, and to their use in pharmaceutical compositions intended for use in human or veterinary medicine, or alternatively in cosmetic compositions.