从链霉菌属菌种的培养液中分离出一种新型的二肽基肽酶IV(DPP-IV)抑制剂Sulphostin。MK251-43F3。由于获得的化合物量少,因此无法使用天然产物确定两个不对称原子的绝对构型。我们从D-或L-鸟氨酸合成了四种可能的硫磺汀立体异构体,并将其理化和生物学数据与天然分离的硫磺汀进行了比较。结果,通过X射线晶体学测定,C-3的绝对构型和硫磺汀的磷原子分别为S和R。合成的硫磺汀及其C-3差向异构体对DPP-IV具有很强的抑制活性,IC50值分别为6.0 ng / mL和8.9 ng / mL。因此看来,磷原子的构型主要负责该活性。相反,C-3的构型似乎不影响活动。
Method for preparation of sulphostin and its analogue or intermediates thereof
申请人:Nagai Masashi
公开号:US20050020834A1
公开(公告)日:2005-01-27
A method for preparing a compound represented by the following general formula (5)
where, n is an integer of 0 to 3; and Y represents a protecting group for an amino group, the method including the steps of reacting a compound represented by the following general formula (3)
where n and Y are as described above, with a silylating agent, and subsequently reacting it with P (═O) T
3
, where T represents a halogen atom, and further with ammonia.
A method for preparing an optically active intermediate of sulphostin or an analogue thereof, which is an optically active amine salt of an optically active compound represented by the following general formula (8)
where n is an integer of 0 to 3; Y represents a protecting group for the amino group; and each configuration at C* and P* may be the same or different and indicates S or R, the method including reacting a compound represented by the following general formula (7)
where n and Y are as described above; and the configuration of C* indicates either of S or R, with an optically active amine, and resolving the formed diastereomeric salt by fractional crystallization.
PROCESSES FOR PREPARATION OF SULPHOSTIN AND ITS ANALOGUES OR INTERMEDIATES THEREOF
申请人:Nippon Kayaku Kabushiki Kaisha
公开号:EP1457494A1
公开(公告)日:2004-09-15
A method for preparing a compound represented by the following general formula (5)
where, n is an integer of 0 to 3; and Y represents a protecting group for an amino group, the method including the steps of reacting a compound represented by the following general formula (3)
where n and Y are as described above, with a silylating agent, and subsequently reacting it with P (=O) T3, where T represents a halogen atom, and further with ammonia.
A method for preparing an optically active intermediate of sulphostin or an analogue thereof, which is an optically active amine salt of an optically active compound represented by the following general formula (8)
where n is an integer of 0 to 3; Y represents a protecting group for the amino group; and each configuration at C* and P* may be the same or different and indicates S or R, the method including reacting a compound represented by the following general formula (7)
where n and Y are as described above; and the configuration of C* indicates either of S or R, with an optically active amine, and resolving the formed diastereomeric salt by fractional crystallization.
一种制备由以下通式(5)代表的化合物的方法
其中,n 是 0 至 3 的整数;Y 代表氨基的保护基团,该方法包括以下步骤:使下一通式(3)所代表的化合物与硅烷化剂反应,其中 n 和 Y 如上所述。
其中,n 和 Y 如上所述,与硅烷化剂反应,然后与 P (=O) T3 反应,其中 T 代表卤素原子,再与氨反应。
一种制备舒磷定或其类似物的光学活性中间体的方法,该光学活性中间体是由下 列通式(8)代表的光学活性化合物的光学活性胺盐
其中 n 是 0 至 3 的整数;Y 代表氨基的保护基团;C* 和 P* 的每个构型可以相同或不同,并表示 S 或 R,该方法包括使下式通式(7)所代表的化合物反应
其中 n 和 Y 如上所述;C* 的构型表示 S 或 R,与光学活性胺反应,并通过分馏结晶分 解所形成的非对映异构盐。
SULPHOSTIN ANALOGUES AND PROCESSES FOR THE PREPARATION OF SULPHOSTIN AND ANALOGUES THEREOF
申请人:ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYU KAI
公开号:EP1184388B1
公开(公告)日:2003-07-30
Direct Lactamization of Azido Amides via Staudinger-Type Reductive Cyclization