发明名称 |
CRYSTAL OF DIURIDINE TETRAPHOSPHATE OR SALT THEREOF AND METHOD FOR PREPARING THE SAME, AND METHOD FOR PRODUCING SAID COMPOUND |
摘要 |
A high purity and stable crystal of P1, P4-di(uridine5'-) tetraphosphate (U2P4) or a salt thereof, and a method for preparing the crystal which comprises purifying a crude U2P4 by using the anionic exchange chromatograph y and the active carbon chromatography and crystallizing the crystal using a hydrophilic organic solvent. A method for producing U2P4 or a salt thereof i n high yield comprising providing UMP as a starting material and using DPC and PPi, characterized by practicing at least one treatment selected from among (a) in the step of reacting UMP-DPP with PPi-organic alkali salt, adding UMP - DPP in a plurality of installments, (b) in the step of reacting UMP-DPP with PPi-organic alkali salt, carrying out a reaction in the presence of a base a nd (c) after U2P4-synthesizing reaction, subjecting the reaction product to an alkali treatment. |
申请公布号 |
CA2345624(A1) |
申请公布日期 |
2000.04.13 |
申请号 |
CA19992345624 |
申请日期 |
1999.10.01 |
申请人 |
YAMASA CORPORATION |
发明人 |
NODA, YUTAKA;MAEDA, HIDEAKI;YAMADA, TOSHIO;SATO, HIROSHI |
分类号 |
C07H19/10;A61P11/00;C07H21/02 |
主分类号 |
C07H19/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|