申请人:API CORPORATION
公开号:US10370330B2
公开(公告)日:2019-08-06
A method for producing (2S,5S)/(2R,5R)-5-hydroxypiperidine-2-carboxylic acid represented by the formula (10) below:
the method comprising the step of removing the protecting group from the hydroxyl group in a compound represented by the formula (7) below:
(wherein P represents a protecting group, R3 represents an alkyl group containing 1 to 4 carbon atoms, and A represents an alkyl group containing 1 to 10 carbon atoms, an aryl group containing 6 to 12 carbon atoms, an alkyloxy group containing 1 to 4 carbon atoms, or an aralkyloxy group containing 7 to 20 carbon atoms) to synthesize a compound represented by the formula (8) below:
(wherein R3 represents an alkyl group containing 1 to 4 carbon atoms, and A represents an alkyl group containing 1 to 10 carbon atoms, an aryl group containing 6 to 12 carbon atoms, an alkyloxy group containing 1 to 4 carbon atoms, or an aralkyloxy group containing 7 to 20 carbon atoms).
一种生产下式(10)所代表的(2S,5S)/(2R,5R)-5-羟基哌啶-2-羧酸的方法:
该方法包括从下式(7)代表的化合物中的羟基上去除保护基的步骤:
(其中 P 代表保护基团,R3 代表含有 1 至 4 个碳原子的烷基,A 代表含有 1 至 10 个碳原子的烷基、含有 6 至 12 个碳原子的芳基、含有 1 至 4 个碳原子的烷氧基或含有 7 至 20 个碳原子的芳烷氧基)来合成下式(8)所代表的化合物:
(其中 R3 代表含 1 至 4 个碳原子的烷基,A 代表含 1 至 10 个碳原子的烷基、含 6 至 12 个碳原子的芳基、含 1 至 4 个碳原子的烷氧基或含 7 至 20 个碳原子的芳烷氧基)。