Abstract:
The present invention provides a composition having antiviral activities which include neorhodomela extracts as an active ingredient. In addition, the present invention provides a method for isolating polybromocatechol which comprises the steps of: obtaining the extract by extracting the neorhodomela using organic solvents and vacuum distilling the same; obtaining fraction extracts by fractioning the organic solvent extracts obtained from the previous step using polar difference of solvents; and isolating and purifying the fraction extract obtained from the previous step using chromatography. According to the present invention, the antiviral substances can be provided which is safe, have enhanced inhibition ability for human rhino virus, and has low toxicity by being derived from a natural product. In addition, the polybromocatechol compound can easily be isolated from the neorhodomela so that the present invention can provide a pharmaceutical composition which can be used for preventing and treating viral diseases. [Reference numerals] (AA) Neorhodomela; (BB) Ethylacetate extracts; (CC) Repeat butanol fraction for two times; (DD) Butanol extracts; (EE) Water extracts; (FF) Silicagel column chromatography Hex;EA;MeOH gradient (F1-F7); (GG) Reverse phase fraction HPLC C-18 DBTHR 10 ml/min, 280 nm, 10-100% acetonitrile gradient (0.02% TFA); (HH) Compound 1a; (II) Compound 2b; (JJ) Compound 1c; (KK) Compound 1d; (LL) Reverse phase fraction HPLCC-18 velocity of flow 4 ml/min, 280 nm 40% acetonitrile (0.02% TFA); (MM) Compound 2a; (NN) Mixture; (OO) Compound 1b
Abstract:
본 발명은 신규 피롤로[3,2-b]피리딘 유도체 또는 이의 약학적으로 허용가능한 염, 이의 제조방법 및 이를 유효성분으로 함유하는 흑색종 예방 또는 치료용 약학적 조성물에 관한 것으로, 더욱 상세하게는 하기 화학식 1로 표시되는 신규 피롤로[3,2-b]피리딘 유도체 또는 이의 약학적으로 허용가능한 염, 이의 제조방법 및 이를 유효성분으로 함유하는 흑색종 예방 또는 치료용 약학적 조성물에 관한 것이다. 본 발명에 따른 피롤로[3,2-b]피리딘 유도체는 흑색종 세포에 대하여 뛰어난 흑색종 항증식 활성을 나타내며, 종래 흑색종 치료제로 사용되는 소라페닙에 비하여 10배 이상의 흑색종 항증식 활성을 나타내기 때문에 흑색종 예방 또는 치료에 유용하게 사용될 수 있다. [화학식 1]
(상기 화학식 1에서 R 1 및 R 2 는 본 명세서에서 정의한 바와 같다) 피롤로[3,2-b]피리딘 유도체, DTIC, 흑색종, 항증식효과
Abstract:
The invention provides an economical method to produce a milk replacer by using soybean refuse which is an economical protein source but was unsuitable as milk replacer. The milk replacer is obtained by: grinding soybean refuse to reduce particle size; bleaching and drying the grinded soybean refuse; adding necessary nutrients. This method improves the color, the flavor and the solubility of soybean refuse such that it can be used in place of dried milk powder.