Abstract:
PURPOSE: 6-methylnicotineamide derivatives useful as antiviral agents are provided, thereby inhibiting the growth of hepatitis B virus(HBV), hepatitis C virus(HCV) and human immunodeficiency virus(HIV). CONSTITUTION: The 6-methylnicotineamide derivatives are represented by formula(1), in which R1 is hydroxy, C1 to C5 linear or branched alkyl, C3 to C6 cyclo alkyl, C2 to C6 dialkylamino, or saturated or unsaturated hetero ring having 5 or 6 atoms, in which the hetero ring comprises 1 to 2 hetero atoms selected from N, O or S, and unsubstituted or substituted with C1 to C3 alkyl; and m is an integer of 0 or 1; R2 is hydrogen or C1 to C4 alkyl; or both R1 and R2 form hetero ring having 5 to 6 atoms, in which the hetero ring comprises 1 to 2 hetero atoms selected from N, O or S; and n is an integer of 0 to 4.
Abstract:
PURPOSE: Novel 3-nitropyridine derivatives inhibiting the growth of HBV and HIV, a pharmaceutically acceptable salt thereof, a preparation thereof and an antiviral composition containing the compound as an effective component are provided, which show less adverse effects and can be effectively used for prevention and treatment of hapatitis B and HBV and HIV. CONSTITUTION: The novel 3-nitropyridine derivatives of formula 1 are prepared by the following processes: 2-chloro-6-methoxy-3-nitropyridine of formula 2 and 5-aminoindazole or 6-aminoindazole of the formula; R2-NH2 are reacted in the presence of a base to produce 3-nitropyridine derivative of formula 1a and the obtained 3-nitropyridine derivative is reacted with an amine compound(R1-NH2). In formula, R1 is H, C1-4 straight or branched alkylamino or C3-6 cycloalkylamino; R2 is indazole-5-yl or indazole-6-yl.
Abstract:
PURPOSE: Provided is a 1-βmethylcarbapenemcarboxylic acid ester derivative wherein lactam is linked to hydroxymethyl at C-2, which has high antibiotic effects on both gram positive and negative bacteria except for Pseudomonas aeruginosa. Also, its preparation method is provided. CONSTITUTION: 1-βmethylcarbaphenemcarboxylic acid ester derivative is represented by the formula(1), wherein R1 is hydrogen atom or cyclic or noncyclic low alkyl having C1-C4; R2 is pivaloyloxyalkyl, low alkoxycarbonyloxyalkyl or alkyldioxoleneonalkyl having C1-C6; and n is 1-3. It is prepared by reacting 1-βmethylvcarbephenem derivative represented by the formula(2), wherein R1, R2 and n is as described above; R is hydrogen or anion induced from organic or inorganic salt; and X is halogen with halide represented by the formula(3) of X-R2 or sulfonate compound.
Abstract:
PURPOSE: A method for producing TNF Related Apoptosis Inducing Ligand(TRAIL) protein, and for crystallizing the TRAIL protein and the three-dimensional structure thereof are provided, thereby TRAIL protein having improved activity, which specifically kills cancer cells and cells infected by virus, can be produced. CONSTITUTION: The TRAIL having sequence No. 2 is produced by the steps of: inserting the human TRAIL protein gene into a plasmid to produce pET3a-TLS; transforming E. coli with pET3a-TLS to produce E. coli BL21-TLS(pET3a-TLS)(KCCM-10169); incubating the transformed E. coli BL21-TLS(pET3a-TLS)(KCCM-10169) at 22 to 37 deg. C and adding IPTG during incubation to express the TRAIL gene; breaking the cells, collecting insoluble fragments, denaturing and refolding the fragments to collect soluble protein; treating the soluble fragment and soluble protein with cationic exchange chromatography and size excluding chromatography to isolate and purify the TRAIL protein. The TRAIL protein is crystallized by using a solution containing 20 to 40% of PEG MME550, 0.02 to 0.5M of bicine, and 0.02 to 0.5M of sodium chloride, then reacting 24 μg of TRAIL protein and a precipitation solution containing 20 to 30% of PEG MME550, 10 to 100mM bicine, and 5 to 20mM of cadmium chloride. The three-dimensional structure of TRAIL protein consists of an inner sheet comprising strand A, A'', H, C and H; an outer sheet comprising strand B', B, G, D and E; and a loop which links ten strands.
Abstract:
PURPOSE: A composition for rectal administration which contains sodium diclopenac is provided, which is produced easily and cheaply, and has appropriate strength and excellent adhesion activity, so that it is readily administrated via rectum for anti-inflammation, alleviation of pain and removal of fever. CONSTITUTION: The composition comprises 1 to 5 wt.% of sodium diclopenac, 25 to 40 wt.% of two or more solid ploxamer mixture, and 0.1 to 1.0 wt.% of one or more polymer selected from polyethylene oxide and polyvinyl pyrrolidone, in which solid ploxamer mixture contains ploxamer 407 and ploxamer 188 in a weight ratio of 1:1-1.5. The composition optionally contains an antiseptic such as sodium benzoic acid, potassium sorbic acid and parabene, pH adjusting agent such as hydrochloric acid, citric acid, and sodium hydroxide, and stabilizer such as methionine.
Abstract:
본 발명은 위장계통을 자극하는 생리활성을 가지는 다음 일반식(Ⅰ)의 N-(4-피페리딘)벤즈아미드 및 그 약제학적으로 허용되는 부가염의 새로운 제조방법에 관한 것이다. 보다 바람직하게는 다음 일반식(Ⅰ)에서 L이 3-(4-플루오로펜옥시)프로필이고, R이 메틸인 위장 연동운동 촉진제로 사용되는 시사프라이드의 새로운 제조방법에 관한 것이다. 또한 본 발명은 일반식(Ⅰ)의 N-(4-피페리딘)벤즈아미드 제조에 유용한 구조식(Ⅲ)의 새로운“활성티오에스테르”및 그 제조방법에 관한 것이다. 즉, 본 발명은 구조식(Ⅶ)의 카르복실산 유도체와 일반식(Ⅵ)의 알킬클로로포르메이트를 반응시켜 일반식(Ⅴ)의 중간체를 생성시킨 후 일반식(Ⅴ)의 중간체와 구조식(Ⅳ)의 2-머캅토벤즈이미다졸을 반응시켜 구조식(Ⅲ)의 새로운“활성티오에스테르”를 제조한 다음, 일반식(Ⅱ)의 시스-피페리딘아민 유도체와 반응시켜 목적화합물인 일반식(Ⅰ)의 시스프라이드를 포함하는 벤즈아미드 유도체를 제조하는 방법에 관한 것이다.
상기 식에서 L은 아르알킬 또는 아릴옥시알킬인데, 이때 알킬부분은 C 1 -C 6 의 알킬이고, 아릴부분은 할로, C 1 -C 6 의 저급알킬 또는C 1 -C 6 의 저급알콕시로부터 독립적으로 선택된 3개까지의 치환체로 임의치환된 것이고; R은 C 1 -C 6 의 저급알킬이며; R 1 은 에틸, 이소프로필 또는 이소부틸이다.
Abstract:
본 발명은 토양에서 분리된 웨스터디켈라 멀티스포라( Westerdykella multispora ) 균주의 배양액으로부터 분리 정제된, IV형 콜라게네이즈(type IV collagenase)의 활성을 저해하는 신규 화합물, 이의 제조방법 및 이를 포함하는 IV형 콜라게네이즈(type IV collagenase) 활성 저해용 조성물에 관한 것으로, 본 발명에 따라 웨스터디켈라 멀티스포라의 배양액으로부터 분리 정제된 신규 화합물 3-(5-(헥사-2,4-디에닐리덴)-2-옥소-5,6-디하이드로-2H-피란-3-일)-프로피온산은 IV형 콜라게네이즈의 활성을 저해하는 작용이 우수하므로 암전이 및 종양의 예방 및 치료제로서 이용될 수 있다.