The invention provides a stable and high-purity protected pseudouridine in crystal form represented by the following structural formula:
(wherein M represents a trityl group or a derivative thereof), which is a useful material for producing an RNA oligomer or a similar substance.
The invention also provides a method for producing the crystalline protected pseudouridine, which method includes crystallizing a protected pseudouridine from a solution containing the protected pseudouridine, by use of an ester solvent and/or an alcoholic solvent. The method, which does not need a silica gel column treatment, can be performed in a simple manner, does not impose a load on the environment, and realizes low-cost production of a target crystalline protected pseudouridine.
本发明提供了一种稳定的高纯度晶体状受保护假尿苷,其结构式如下:
(其中 M 代表三苯甲基或其衍生物),它是生产 RNA 低聚物或类似物质的有用材料。
本发明还提供了一种生产结晶的受保护的假尿苷的方法,该方法包括通过使用酯溶剂和/或醇溶剂,从含有受保护的假尿苷的溶液中结晶出受保护的假尿苷。该方法无需硅胶柱处理,操作简单,不会对环境造成负担,可实现低成本生产受保护的目标结晶假尿嘧啶。
STABLE CYSTAL OF PROTECTED PSEUDOURIDINE
申请人:Kitano Kenji
公开号:US20100216985A1
公开(公告)日:2010-08-26
A stable and high-purity protected pseudouridine in crystal form is provided represented by the following structural formula:
wherein M represents a trityl group or a derivative thereof, which is a useful material for producing an RNA oligomer or a similar substance. A method for producing the crystalline protected pseudouridine is also provided, which method includes crystallizing a protected pseudouridine from a solution containing the protected pseudouridine, by use of an ester solvent and/or an alcoholic solvent. The method, which does not need a silica gel column treatment, can be performed in a simple manner, does not impose a load on the environment, and realizes low-cost production of a target crystalline protected pseudouridine.
US7968521B2
申请人:——
公开号:US7968521B2
公开(公告)日:2011-06-28
Nucleosides. Part LIX. The 2-(4-nitrophenyl)ethylsulfonyl (Npes) Group: A New Type of Protection in Nucleoside Chemistry
The 2-(4-nitrophenyl)ethylsulfonyl (npes) group is developed as a new sugar OH-blocking group in the ribonucleoside series. Its cleavage can be performed in a β-eliminating process under aprotic conditions using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as the most effective base. Since sulfonates do not show acyl migration, partial protection of 1,2-cis-diol moieties is possible leading to new types