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    • 4. 发明申请
    • PURIFICATION OF ORGANIC COMPOUNDS BY SURFACTANT MEDIATED PREPARATIVE HPLC
    • 通过表面活性剂介导的制备型HPLC纯化有机化合物
    • WO2015040635A3
    • 2015-06-04
    • PCT/IN2014000607
    • 2014-09-18
    • DAVULURI RAMAMOHAN RAO
    • ANWER MOHAMMED KHALID
    • B01D15/08B01D15/32G01N1/18
    • C07K1/20B01D15/325B01D15/42C07K7/23
    • There are only two ways to increase the amount of sample that can be purified by preparative reversed phase high performance liquid chromatography (Prep-RP-HPLC) in a single run in spite of recent advances in the production of reversed phase derivatized silica stationary supports: (1) The traditional approach is to use a bigger column (greater amount of stationary phase); and (2) Use displacement chromatography which (while labor intensive to develop) uses the stationary phase more effectively. This invention describes a unique Prep-RP-HPLC technique that uses a C-18/ C-8 derivatized silica coated with a surfactant such as Triton X-100 to result in 7 to 10 fold increase in sample loading (of the crude mixture of organic compounds including synthetic crude peptides) in contrast to the conventional Prep-RP-HPLC technique. This increase in sample loading capacity and output is due to the additional surrogate stationary phase characteristic of the C-18/ C8 adsorbed (bound) surfactant. The surfactant is bound to the C-18/ C-8 chains of the stationary phase via Van der Waals forces (hydrophobic interactions) and ionic interactions with the residual silanols of the stationary phase.
    • 尽管反相衍生的二氧化硅固定支架的生产最近有进展,但是在单次运行中,只有两种途径可以通过制备型反相高效液相色谱法(Prep-RP-HPLC)来提高样品的量。 (1)传统的方法是使用较大的色谱柱(更大量的固定相); 和(2)使用置换色谱法(尽管劳动密集型开发)更有效地使用固定相。 本发明描述了独特的Prep-RP-HPLC技术,其使用涂覆有表面活性剂如Triton X-100的C-18 / C-8衍生的二氧化硅,导致样品负载量增加7至10倍 有机化合物,包括合成粗肽)与传统的Prep-RP-HPLC技术相反。 样品负载能力和产量的增加是由于C-18 / C8吸附(结合)表面活性剂的附加替代固定相特征。 表面活性剂通过范德华力(疏水相互作用)和与固定相的残余硅烷醇的离子相互作用与固定相的C-18 / C-8链结合。