Purification of human interleukin-4 from a secreted escherichia coli
mutant
    4.
    发明授权
    Purification of human interleukin-4 from a secreted escherichia coli mutant 失效
    从分泌的ESCHERICHIA COLI突变体中纯化人类白细胞介素-4

    公开(公告)号:US5077388A

    公开(公告)日:1991-12-31

    申请号:US531270

    申请日:1990-05-31

    CPC分类号: C07K14/5406 A61K38/00

    摘要: Active recombinant human IL-4 is purified from a crude fermentation broth of a secreted E. coli mutant by subjecting said solution to selective chromatogrphy on a zinc-chelating agarose column at pH 7.2 in a buffer containing a high concentration of sodium chloride, i.e., about 1M sodium chloride, washing first with a phosphate buffer at pH 7.2 containing 1.0M sodium chloride then with a buffer containing 10% glycerol and eluting at pH 5.0. The resulting purified active recombinant human IL-4 solution is further treated by cation exchange chromatography, concentration by diafiltration up to 20 mg/mL and size exclusion gel chromatography using a citrate buffer at pH 4.5.

    摘要翻译: 通过在含有高浓度氯化钠的缓冲液中将所述溶液在pH7.2的锌螯合琼脂糖柱上进行选择性色谱纯化,从分泌的大肠杆菌突变体的粗发酵液中纯化活性重组人IL-4, 约1M氯化钠,首先用含有1.0M氯化钠的pH 7.2的磷酸盐缓冲液洗涤,然后用含有10%甘油的缓冲液洗涤,并在pH5.0下洗脱。 所得纯化的活性重组人IL-4溶液进一步通过阳离子交换色谱法进行处理,通过渗滤浓缩至20mg / mL,使用pH 4.5的柠檬酸盐缓冲液进行尺寸排阻凝胶层析。

    Preparation of (threo)-1-aryl-2-acylamido-3-fluoro-1-propanols
    6.
    发明授权
    Preparation of (threo)-1-aryl-2-acylamido-3-fluoro-1-propanols 失效
    (苏)-1-芳基-2-酰基氨基-3-氟-1-丙醇的制备

    公开(公告)号:US4973750A

    公开(公告)日:1990-11-27

    申请号:US300148

    申请日:1989-01-23

    摘要: A novel sequence of highly selective chemical reactions for conversion of 3-Aryl-2-propyn-1-ols into cis-1-Aryl-3-fluoro-1-propene and into D,L-(threo)-1-Aryl-2-acylamido-3-fluoro-1-propanols is disclosed. Preparation of D-(threo)-1-Aryl-2-acylamido-3-fluoro-1-propanol antibacterial agents including the D-(threo)-3-fluoro-3-deoxy derivatives of chloramphenicol and thiamphenicol is also disclosed.

    摘要翻译: 用于将3-芳基-2-丙炔-1-醇转化成顺式-1-芳基-3-氟-1-丙烯并转化为D,L-(苏氨酸)-1-芳基-1-丙烯的高选择性化学反应的新序列, 公开了2-酰氨基-3-氟-1-丙醇。 还公开了包含氯霉素和甲砜霉素的D-(苏氨酸)-3-氟-3-脱氧衍生物的D-(苏)-1-芳基-2-酰基氨基-3-氟-1-丙醇抗菌剂的制备。