申请人:API CORPORATION
公开号:US20160318867A1
公开(公告)日:2016-11-03
A method for producing (2S,5S)/(2R,5R)-5-hydroxypiperidine-2-carboxylic acid represented by formula (10) below:
the method including removing the protecting group from the hydroxyl group in a compound represented by formula (7) below:
(wherein P represents a protecting group, R
3
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 formula (8) below:
(wherein R
3
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).
以下是公式(10)所代表的产生(2S,5S)/(2R,5R)-5-羟基哌啶-2-羧酸的方法:该方法包括从以下公式(7)所代表的化合物中去除羟基上的保护基(其中P代表保护基,R3代表含有1至4个碳原子的烷基基团,A代表含有1至10个碳原子的烷基基团,含有6至12个碳原子的芳基基团,含有1至4个碳原子的烷氧基团,或含有7至20个碳原子的芳基烷氧基团),以合成以下公式(8)所代表的化合物(其中R3代表含有1至4个碳原子的烷基基团,A代表含有1至10个碳原子的烷基基团,含有6至12个碳原子的芳基基团,含有1至4个碳原子的烷氧基团,或含有7至20个碳原子的芳基烷氧基团)。