摘要:
Provided are a composition for treating and/or preventing ALS containing the phenyl carbamate compound or a pharmaceutically acceptable salt thereof as an active ingredient; a method of treating and/or preventing ALS comprising administering the phenyl carbamate compound or a pharmaceutically acceptable salt thereof to a patient in need of ALS treatment; and a use of the phenyl carbamate compound or a pharmaceutically acceptable salt thereof in treating and/or preventing ALS.
摘要:
The present invention discloses a precursor of alkoxysilylamine presented by Chemical Formula A or B. According to the Chemical Formula A or B, R1 or R4 is independently selected from a linear or branched C1 or C10 alkyl group, a C3 or C12 alkenyl group, a C3 or C12 alkynyl group, a C4 or C10 cyclic alkyl group, and a C6 to C10 aryl group. R2, R3, R5, and R6 is independently selected from a group constituted by hydrogen, a linear or branched C1 or C10 alkyl group, a C2 or C12 alkenyl group, a C2 or C12 alkynyl group, a C4 or C10 cyclic alkyl group, a C6 or C10 aryl group, and a linear or branched C1 or C10 alkoxy group.
摘要:
PURPOSE: Polyacrylate or polymetacrylate containing silicone is provided to resolve inconvenience of long term use by maximizing protein attachment inhibitory effect and to have high percent of moisture content and oxygen permeability, thereby being useful as a raw material for general coating soft lens and hydrogel soft lens. CONSTITUTION: Acrylate or metacrylate monomer containing silicone is represented by the chemical formula 1. The acrylate or metacrylate monomer containing silicone is represented by the chemical formula 2, chemical formula 3, or chemical formula 4. Polyacrylate or polymetacrylate containing silicone includes repeat unit represented by the chemical formula 5. The hydrogel soft lens comprises the polyacrylate or polymetacrylate containing silicone.
[식 중, m, l, 및 n 은 각각 1 또는 2 의 정수를 나타내고; X 는 -O- 또는 -CH 2 - 을 나타내고; R 1 은 수소, 저급 알킬기, 히드록시-저급 알킬기, 보호기, 또는 트리-저급 알킬실릴옥시-저급 알킬기를 나타내고; R 2 및 R 3 은 상동 또는 상이하고, 각각 독립적으로 수소 또는 저급 알킬기를 나타내거나; 또는 R 2 및 R 3 이 결합되어 시클로-C3-C8 알킬기를 형성하고; 및 R 4 는 방향족 기 또는 헤테로시클릭기를 나타내고, 이때 상기 방향족 또는 헤테로시클릭기는 하나 이상의 임의의 치환기(들)를 가질 수 있음].
摘要:
PURPOSE: A non-aqueous electrolyte is provided to improve charging/discharging cycle life time of a lithium secondary battery, restraining decomposition on an electrode surface of electrolyte, and to have excellent electrolyte-decomposition retraining effect even in high voltage condition. CONSTITUTION: A non-aqueous electrolyte comprises ionizable lithium salt, organic solvent, and mercapto silane compound in chemical formula 1. In chemical formula 1, R^1 is a vinyl group, an allyl group, a phenyl group, a benzyl group, or halogen-substituted or non-substituted C1-10 alkylene group, or a C3-8 cyclic alkyl group-branched linear C1-10 alkylene group. R^2, R^3, and R^4 is respectively and independently a vinyl group, phenyl group, or halogen-substituted or non-substituted C1-10 alkyl group, halogen, hydrogen, or a C3-8 cyclic alkyl group.
摘要:
PURPOSE: A method for manufacturing hydrophobic silica is provided to improve hydrophobicity of silica by coating two of more kinds of silane coupling agents on the surface of the silica. CONSTITUTION: The surface of silica is coated with two or more kinds of silane coupling agents represented by chemical formula 1 or 2. In chemical formula 1, R1 to R6 are identical or different and are C1 to C5 alkyl groups; and R7 to R9 are identical or different and C1 to C10 linear or branched alkylene groups. In chemical formula 2, R10 to R12 are identical or different and are C1 to C5 alkyl groups; and R13 is a C1 to C18 linear or branched alkyl group. The total content of the silane coupling agents is 1 to 20 parts by weight based on 100 parts by weight of the silica.
摘要:
A surfactant of formula (1) A surfactant of formula 1 (Rf-A)a-Q-([B]k-R)b Formula 1 wherein a and b are each independently 1 or 2; Ris a linear or branched perfluoroalkyl radical having from 2 to about 20 carbon atoms, optionally interrupted with at least one oxygen; R is a Cto Clinear, branched or cyclic alkyl, or a Cto Caryl; B is-(CHCHRO)k is 0 or 1, x is 1 to about 20, A is-(CH)[(CHRCHO)]-[(CH)(CH)CHOH(CH)m]-, wherein each m is independently 0 to 3, s is 0 to about 30, t is 0 or 1, and e is 0 or 1, Ris H or CHQ is:-OP(O)(O-M)(O)-,-O-,-S-(CH)-C(O)-O-,-SO-O--CHCHO-C(O)CHC(OH)(V)CHC (O)O-;-(CHCHO)CHCH(OH)-(CHCHO)-(CH)-Si[OSi(R)]-,-SONR--(CHCHO)C(O)CH(SO-M)CHC(O)(OCHCH)-wherein z is 1 to about 15, or a bond when s is a positive integer, V is-C(O)ORand Ris H, CHor R; Ris Cto Calkyl, and Mis a Group 1 metal or an ammonium (NHRy)cation wherein x + y = 4, and Ris Cto Calkyl, provided that when Q is-OP(O)(OM)(O)-or when Q is-(CHCHO)-C(O)CH(SO-M+)CHC(O)(OCHCH)-then at least one of s or e is a positive integer.
摘要:
본 발명은 γ-[N-(2-아미노에틸)]아미노프로필알킬알콕시실란의 제조방법에 관한 것으로, 상세하게는 a) 에틸렌디아민과 촉매로서 환형삼차아민을 반응기에 가하여 화학식 1로 표시되는 γ-클로로알킬알콕시실란을 적가반응시켜 γ-[N-(2-아미노에틸)]아미노알킬알콕시실란을 50 내지 60℃의 저온에서 합성 제조하는 단계; b) 합성 제조된 반응 혼합물에 에틸렌디아민 · 염화수소 염을 투입한 후 반응혼합물을 정치시켜 2상의 분액으로 형성하는 단계; c) 2상으로 분액 분리된 반응 혼합물 중 에틸렌디아민 · 염화수소 염이 풍부한 하부층을 분리하는 단계; d) 여액인 상부층을 저온 진공 조건에서 에틸렌디아민이 포함된 저비점 휘발성 물질을 제거하고 하기의 화학식 2로 표시되는 γ-[N-(2-아미노에틸)]아미노알킬알콕시실란을 제조하는 단계; e) 상기 c)단계에서 분리된 하부층을 d) 단계와 같이 진공증류하여 에틸렌디아민을 포함한 휘발성 물질을 제거한 후 남은 에틸렌디아민 · 염화수소 염을 상기 b) 단계의 반응 후 혼합액으로 재순환하여 투입하는 하는 단계;를 포함한 γ-[N-(2-아미노에틸)]아미노알킬알콕시실란을 제조하는 방법에 관한 것이다. 본 발명에 따른 제조방법은 γ-클로로알킬알콕시실란를 적가반응 시킴으로서 반응계 내에서 에틸렌디아민과의 몰비를 항상 12배 이상으로 확보되도록 하여 γ-[N-(2-아미노에틸)]아미노알킬알콕시실란 제조 중 부생되는 비스실릴류의 생성량을 억제시키며, 촉매 하 저온에서 반응시켜 목표물을 제조함으로서 생성물의 변색을 방지할 수 있으며, 에틸렌디아민 · 염화수소를 반응 후 혼합액에 첨가하여 쉽게 분액분리를 유도함으로써 별도의 상분리기와 1차 증류공정을 생략한 단순화된 γ-[N-(2-아미노에틸)]아미노알킬알콕시실란 정제공정을 가진 장점이 있다. γ-[N-(2-아미노에틸)]아미노알킬알콕시실란, 아미노알킬알콕시실란
摘要:
PURPOSE: Provided are a novel (S)-2-t-butyldiphenylsilyloxymethylindoline of the formula(1) and a process for preparing (2S,3S)-2,3-dialkyltartaric acid by pinacol coupling using it as a chiral ligand, thereby producing (2S,3S)-2,3-dialkyltartaric acid in high chemical and optical yields. CONSTITUTION: (S)-2-t-butyldiphenylsilyloxymethylindoline is represented by the formula(1), wherein R is methyl or phenyl, and prepared by the steps of: reducing (S)-indoline-2-carbonic acid into lithium aluminum hydride; reacting it with chloro t-butyldiphenylsilane compound in the presence of imidazole to obtain (S)-2-t-butyldiphenylsilyloxymethylindoline. (2S,3S)-2,3-dialkyltartaric acid is prepared by the steps of: reacting 2-keto carbonic acid with (S)-2-t-butyldiphenylsilyloxymethylindoline(I) in the presence of dicyclohexylcarbodiimide(DDC) to obtain 2-ketoamide(II); pinacol coupling the 2-ketoamide(II) in the presence of hexamethylphosphoamide(HMP) to obtain dialkyltartaric acid derivative; and hydrolyzing the derivative to manufacture (2S,3S)-2,3-dialkyltartaric acid(III).
摘要:
The title inhibitors, e.g., 4-amino-4,5-dihydro-2- thiophenecarboxylates (I)[R=H or alkyl , useful for the treatment of epilepsy and schizophrenia, were prepd.. Thus, (R)-4-amino- 4,5dihydro-2-thiophenecarboxylic acid ((I),R=H)(II) was prepd. by redn. of cysteine Et ester-HCl with di-tert-Bu dicarbonate, treatment of the product with BrCH2CO2Et, Dieckmann cyclization of the resulting N-[(1,1)-dimethylethoxy)carbonyl carbethoxymethyl-Lcystine Et ester with Li diisopropylamide and NaBH4 redn., dehydration, mesylation and deprotection of the Dieckmann product, 4-[(1,1- dimethylethoxy)carbonyl amino tetrahydro-3-oxo-2thiophenecarboxylate.