Abstract:
PURPOSE: L-type thionucleosides substituent manufactured by substituting no. 2' position are provided which are good for an anticancer drug or antiviral agent(anti-HBV, anti-HSV or anti-HCMV). CONSTITUTION: New thionucleosides(I) useful as an anticancer drug or antiviral agent(anti-HBV, anti-HSV or anti-HCMV) are prepared. In formula(I), R1,R2 are respectively H, halogen, azido, lower alkyl, or together methylene group; B is pyrimidine of uracil, cytosin, thymine, 5-halouracil, 5-halocytosin etc, or guanine, 6-chloropurine, hypoxanthine, 2-amino-6-cyclopropylamine, 6-methoxypurine, and 2-amino-6-methoxypurine. The acute toxicity test of thionucleosides is conducted with mice. Each compound is crushed and mixed with corn oil to afford 250 mg/kg, 1,000 mg/kg and 2,000 mg/kg. Dosage of 10 ml or 20 ml per kg is administered by using a needle for oral administration. The percentage of mortality is shown 0% to 2,000 mg/kg.
Abstract:
본 발명은 선택적 A 3 아데노신 수용체 효능제, 2-클로로-N 6 -(3-아이오도벤질)-4'-싸이오아데노신-5'-N-메칠유로나마이드 (thio-Cl-IB-MECA), N 6 -(3-아이오도벤질)-4'-싸이오아데노신-5'-N-메칠유로나마이드 (thio-IB-MECA), 또는 약제학적으로 허용가능한 이들의 염을 포함하는 염증성 질환, 대장암 및 전립선암 예방 또는 치료용 약제학적 조성물에 관한 것이다. 본 발명에 따른 약제학적 조성물은 종래의 A 3 아데노신 수용체 효능제에 비하여 독성이 현저히 낮아서 염증성 질환의 예방 및 치료에 유용하다. 또한 다른 A 3 아데노신 수용체 효능제에 비하여 보다 더 선택적으로 안드로젠 수용체 의존성 또는 비의존성 전립선 암 세포의 성장을 억제하므로 대장암 및 전립선암의 예방 또는 치료에 유용하다.
Abstract:
본 발명은 2-[2-클로로-6-(3-아이오도벤질)-퓨린-9-일]-테트라하이드로-싸이오펜-3,4-디올 (LJ-1888) 또는 약제학적으로 허용가능한 이것의 염을 활성 성분으로 포함하는 염증성 질환의 예방 또는 치료용 약제학적 조성물에 관한 것이다. 본 발명에 따른 약제학적 조성물은 종래의 A 3 아데노신 수용체 효능제나 길항제에 비하여 독성이 현저히 낮아서 염증성 질환의 예방 및 치료에 유용하다.
Abstract:
PURPOSE: Provided is a gene coding thermostable cytidine deaminase. And a recombinant strain, E. coli JH53 (KCTC 8971P), expressing the same is also provided. The enzyme eliminates only (+) isomer of (+)(-) isomers of glucose so that (-) isomer useful as an ingredient of medications against type B hepatitis virus can be easily separated. CONSTITUTION: A gene coding thermostable cytidine deaminase and a recombinant strain, E. coli JH53 (KCTC 8971P), expressing the enzyme are obtained by the following steps of: i) synthesizing complimentary base sequences of 5'-ACACGGATCCAATTCTAATTTTTCTGTTACATTTTTG-3' and 5'-ACACTGCAGGATTTTCCTACGTTCGGTCTTCC-3' to use them as primers in cloning cdd gene of Bacillus caldolyticus; ii) culturing Bacillus caldolyticus in Luria-broth at 65 deg.C; iii) isolating chromosome DNA by Maniatis T. method; iii) performing PCR using Tag DNA polymerase; iv) cloning foreign gene then inserting it into pDIA5304 vector to recover plasmid pCJH53; v) transforming E.coli JF611(cdd-) with the plasmid pCJH53 to obtain E.coli JH53(KCTC 8971P); vi) culturing the transformant in AB minimal medium at 37 deg.c; vii) centrifuging the cell and followed by washing with cytidine deaminase buffer solution twice and ultra-sonificating for 45 seconds twice; viii) heat-treating the supernatant at 65 deg.C for 15 minutes and performing anion exchange chromatography and Sephacryl S-2oo liquid chromatography.
Abstract:
PURPOSE: Thionucleoside derivatives having anti-cancer activity and a pharmaceutical composition containing the same are provided. The compounds have selective activity to the adenosine A3 receptor, so that they can be useful for prevention and treatment of various cancers, inflammatory intestine disorders and inflammatory diseases. CONSTITUTION: Thionucleoside derivatives having anti-cancer activity represented by the formula(I) or pharmaceutically acceptable salts or isomers are provided, wherein X is sulfur or oxygen; R1 is hydrogen, C1 to C5 alkyl, benzyl, halobenzyl or phenylalkyl; R2 is hydrogen, halogen, alkoxy, alkenyl, alkynyl, alkylthio or thio; R3 and R3' are independently C1 to C5 hydroxyalkyl, alkoxycarbonyl or C1 to C5 alkylaminocarbonyl; and R4 is hydrogen or C1 to C5 alkyl. The pharmaceutical composition having adenosine A3 receptor selective activity contains the thionucleoside derivatives of the formula(I) as an effective component and pharmaceutically acceptable carriers.