Abstract:
PURPOSE: A pharmaceutical composition containing myxochelin-A which exhibits excellent anticancer activity against human cancer cells, together with excellent antioxidant activity as a main component is provided which can be effectively used as an effective antioxidant and anticancer agent. CONSTITUTION: The pharmaceutical composition contains myxochelin-A of formula 1 obtained by being separated from myxobacteria or being chemically synthesized or semisynthesized. The myxochelin-A is purely separated by the steps of: separating a biomass and absorption resin by culturing Angiococcus disciformis strains as myxobacteria in the presence of absorption resin and centrifuging a culture solution; adding an organic solvent, preferably a mixed solvent of acetone and methanol; extracting and filtering to remove the biomass and absorption resin; preparing an active fraction by concentrating the filtrate under reduced pressure and extracting a crude extract in an organic solvent; and successively performing silica gel liquid chromatography and recycling preparative HPLC.
Abstract:
PURPOSE: Provided is 4-O-(2-(N,N-dialkylamino)- 2-deoxy-4,6-O,O- (alkenylidene or alkynylidene)-beta-D- glucosyl)-4-O- dimethyl-epi-podophyllotoxin compound which is used in the treatment of cancers. Also, its producing method and an anticancer composition containing the same compounds are provided. CONSTITUTION: The 4-O-(2-(N,N-dialkylamino)- 2-deoxy-4,6-O,O- (alkenylidene or alkynylidene)-beta-D- glucosyl)-4-O- demethyl-epi-podophyllotoxin compound is represented by formula (1), in which R1 and R2 are individually hydrogen, C1 to C10 alkyl or C5 to C10 cycloalkyl or forms together C4 to C10 ring compounds having nitrogen atom; and R3 is linear or branched C1 to C8 alkyl, alkoxy, alkoxyalkyl or vinyl having aryl substituents, ethynyl, allyl, C3 to C10 cycloalkyl, C5 to C10 cycloalkenyl or C5 to C10 cycloalkynyl. The compound is produced by reacting a compound of formula (2) with aldehyde(3) or acetal of formula (4) in the presence of acid catalysts to produce a compound of formula (5); removing amino protecting group of formula (5) to produce compound of formula (6); and alkylation reacting the compound of formula (6) in the presence of reductase to produce the compounds of formula (1).
Abstract:
본발명은동맥경화증또는혈관협착증을비롯한이상증식혈관질환의예방또는치료용조성물에관한것이다. 본발명에서개시하는화합물은이상증식혈관질환의진행에핵심적인역할을하는혈관평활근세포의증식을크게억제함으로써동맥경화및 혈관협착증등의질환에대한효과적인치료제조성물로유용하게이용될수 있다.
Abstract:
본 발명은 형광프로브를 이용한 Lin28 단백질과 pre-let-7의 miRNA에 결합을 정량적으로 분석하는 방법 및 상기 분석방법을 이용한 Lin28 단백질과 pre-let-7 miRNA의 결합 억제제를 스크리닝 하는 방법에 관한 것이다. 구체적으로 a) pre-let -7 miRNA의 5'-말단에 소광(quencher)물질이 부착되고 3'-말단에 형광물질이 부착된 형광 프로브를 제조하는 단계; b) Lin28 단백질과 a) 단계의 형광프로브를 반응시키는 단계; c) 상기 반응물의 형광값을 측정하는 단계; 를 포함하는 Lin28 단백질과 pre-let-7 miRNA의 결합을 정량 분석하는 방법에 관한 것이다. 또한 본 분석방법은 이들의 결합을 저해하는 억제제를 대량으로 스크리닝하는 데 유용하게 사용될 수 있다.
Abstract:
본 발명은 N2,N4-비스(4-(피페라진-1-일)페닐)피리미딘-2,4-디아민 유도체 또는 이의 약학적으로 허용가능한 염 및 이를 유효성분으로 함유하는 암의 예방 또는 치료용 약학적 조성물에 관한 것이다. 본 발명에 의한 화합물은 역형성 림프종 키나아제(ALK)와 Cdc42 관련 활성 키나아제(ACK1, Acetivated Cdc42-associated Kinase)의 활성을 억제하는 효과가 우수하므로 이에 따른 EML4-ALK, NPM-ALK 등 역형성 림프종 키나아제(ALK) 융합 단백질을 가진 암세포에 대한 치료효과가 향상될 수 있으며, 암의 재발을 막는데 효과적일 것으로 예상되므로 암의 예방 또는 치료용 약학적 조성물로 유용하게 사용될 수 있다.
Abstract:
PURPOSE: A cinnamide derivative, a neural precursor cell using thereof, and a composition for inducing the differentiation are provided to offer differentiated neural cells capable of effectively using for curing nerve damage diseases. CONSTITUTION: A cinnamide derivative or its salt is marked with chemical formula 1. In the chemical formula 1, R is more than one F, Cl, or Br. A composition for inducing the differentiation of stem cells into neural cells or neural precursor cells contains the cinnamide derivative or its salt as an active ingredient. 10~20 micro mol of cinnamide derivative is contained in the composition.