Abstract:
PURPOSE: An Alpinia katsumadai extract having anti-cancer activity is provided which contains 7,8-dihydroxyflavanone. CONSTITUTION: 7,8-dihydroxyflavanone inhibits the formation of Jun-Pos dimmer or the binding of Jun-Pos dimmer to DNA, so that it prevents the growth of cancer cells. The Alpinia katsumadai extract is obtained by organic solvent such as ether, benzene, methanol, ethanol, butanol, chloroform, methylene chloride, ethyl acetate, and hexane. 7,8-dihydroxyflavanone is purified by the following steps of: 1)the extraction of Alpinia katsumadai with ether and benzene; 2)the application of the Alpinia katsumadai extract to silica gel chromatography using mixture of hexane and ethyl acetate(9: 1, 4: 1, 2: 1); 3)the crystallization of the 23rd fraction out of 60 fractions.
Abstract:
본 발명은 항암활성이 있는 백렴 ( Ampelopsis Radix ) 추출물, 백렴으로부터 하기 화학식 1의 화합물을 제조하는 방법 및 화학식 1의 화합물을 유효성분으로 함유하는 항암제용 약학적 조성물에 관한 것이다. 화학식 1의 화합물인 모모딘 (momordin)류 화합물은 준-포스 다이머의 형성 또는 준-포스 다이머와 DNA 가 결합하는 것을 저해하여 종양세포의 증식을 억제하는 물질로서, 화학식 1의 화합물이 포함된 백렴 추출물을 유효성분으로 함유하는 약학적 조성물은 항암제로 유용하게 사용될 수 있다.
상기 화학식 1에서, R 1 은H 또는 β-D-자일로즈 (xylose)이고, R 2 는 α-L-아라비노즈 (arabinose) 또는 β-D-자일로즈이다. 단, R 1 이 H 일 때 R 2 는 β-D-자일로즈가 아니다.
Abstract:
본 발명은 하기 화학식 1의 화합물, 하기 화학식 3의 화합물, 하기 [212] 화합물, [224] 화합물, 또는 [228] 화합물; 이의 약제학적으로 허용 가능한 염; 이의 입체 이성질체; 이의 수화물; 또는 이의 용매화물, 및 이를 포함하는 약제학적 조성물을 제공한다. 상기 약제학적 조성물은 우수한 항바이러스 효능을 가지므로 SARS-CoV-2와 같은 바이러스 감염 질환의 예방 또는 치료 효과를 가지며, IL-5 발현 억제 효과를 보이므로 호흡기 질환 또는 알레르기성 질환의 예방 또는 치료 효과를 가진다.
Abstract:
본 발명은 광학 활성 디아민 유도체의 신규한 산부가염 및 이의 제조 방법에 관한 것이다. 본 발명의 디아민 유도체의 산부가염은 에독사반을 고순도 및 고수율로 제조할 수 있고, 독성 문제가 없으며, 비교적 간단한 공정 및 저렴한 비용으로 제조할 수 있는 제조 방법을 제공하여, 비용 및/또는 시간 면에서 경제적으로, 대량 생산에 유리하여 산업화에 사용될 수 있다.
Abstract:
A process for preparing an intermediate of donepezil having dementia-treating effects is provided to improve preparation yield and convenience of mass production of the intermediate by replacing the base which is difficult to be used industrially. An intermediate of donepezil, 2-[(E)-1-(1-benzyl-4-piperidyl)methylidene]-5,6-dimethoxy-1-indanone represented by the formula(1) is prepared by reacting 1-indanone compound represented by the formula(2) with aldehyde compound represented by the formula(3) by using a base selected from sodium methoxide(MeONa), sodium ethoxide(EtONa), potassium t-butoxide, sodium hydride, sodium hydroxide, potassium hydroxide and sodium amide in a reaction solvent selected from methanol, ethanol, isopropanol, t-butanol, tetrahydrofuran, 1,4-dioxane, diisopropyl ether, dimethylform amide, dimethylsulfoxide and nitromethane.
Abstract:
An imatinib camsylate is provided to be more rapidly absorbed and show higher absorption concentration and excellent solubility in water than those of a commercially available imatinib mesylate in the pharmacokinetic aspect. An imatinib camsylate is represented by the formula(1), wherein HX is D-(+)-camphorsulfonic acid, L-(-)-camphorsulfonic acid or D,L-(±)-camphorsulfonic acid. A method for preparing the imatinib camsylate comprises the steps of: (a) dissolving an imatinib represented by the formula(2) in an organic solvent; (b) dissolving one acid represented by the formula(3) or (4), or an acid which is a mixture of the formula(3) and the formula(4) in a ratio of 1:1 in an organic solvent or adding the acid as it is to the reaction solution obtained from the step(a) to prepare a mixture; (c) filtering a solid extracted by agitating the mixture to form an acid addition salt; and (d) after dissolving the acid addition salt in an organic solvent and re-filtering it to extract crystal, purifying the crystal.
Abstract:
A composition and kit for treatment of prostate cancer comprising the radioisotope-chitosan complex are provided, which radioisotope-chitosan complex is concentrated to a local region administered so as to prevent leakage of radiation, inhibits growth of prostate cancer cells, and minimizes side effects including urinary incontinence, stricture urethra and rectal hematochezia. The composition for treatment of prostate cancer comprises the radioisotope-chitosan complex, wherein the radioisotope emits high energy beta-ray and low energy gamma-ray simulteneously; the radioisotope is selected from 153Sm, 165Dy, 166Ho and 169 Er; and the molecular weight of chitosan is 100,000 to 1,500, 000 dalton. A kit for treatment of prostate cancer comprises a kit A containing 0.5 to 150 mCi of radioisotope and a kit B containing chitosan with molecular weight of 400,000 to 1,300,00 dalton, wherein the chitosan is weak acid chitosan solution; the chitosan solution comprises one or more selected from pH regulating agent, tonicity adjustment agent, preservative and stabilizing agent.