申请人:KURARAY CO., LTD.
公开号:US20010031871A1
公开(公告)日:2001-10-18
A pyridine alcohol derivative represented by General Formula III
1
(where A represents a divalent organic group which may contain one to three oxygen atoms, nitrogen atoms and/or sulfur atoms, wherein A may form a 5-, 6-, 7-, or 8-membered ring together with two bonded carbon atoms, where said ring may form a condensed ring with one or more additional rings; R
5
represents a hydrogen atom, —CHR
1
R
2
, or an alkenyl group, an aryl group or an aralkyl group which may be substituted; R
1
and R
2
each independently represent a hydrogen atom or a hydrocarbon group which may be substituted; and R
6
represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group which may be substituted), is produced by:
reacting a pyridine ester derivative represented by General Formula I-1
2
(where Z
1
represents —COX; X represents an alkoxyl group, an alkenyloxy group, an aryloxy group or an aralkyloxy group which may be substituted; and A is the same as above)
with-a reducing agent, an alkylating agent, an alkenylating agent, an arylating agent or an aralkylating agent to obtain a pyridine carbonyl derivative represented by General Formula II
3
(where A and R are the same as above); and
reacting the resulting pyridine carbonyl derivative with a reducing agent, an alkylating agent, an alkenylating agent, an arylating agent or an aralkylating agent to obtain the pyridine alcohol derivative of the General Formula III.
一种由通式III1表示的吡啶醇衍生物(其中A表示一个双价有机基团,该基团可以含有一个到三个氧原子、氮原子和/或硫原子,其中A可以与两个键合的碳原子一起形成一个5、6、7或8元环,其中该环可以与一个或多个附加环形成紧缩环;R5表示氢原子、—CHR1R2或可以被取代的烯基基团、芳基基团或芳基烷基基团;R1和R2分别独立地表示氢原子或可以被取代的碳氢基团;R6表示氢原子、烷基基团、烯基基团、芳基基团或芳基烷基基团,可以被取代),通过以下步骤制备:将由通式I-12表示的吡啶酯衍生物(其中Z1表示—COX;X表示可以被取代的烷氧基团、烯基氧基团、芳基氧基团或芳基烷氧基团;A与上述相同)与还原剂、烷基化试剂、烯基化试剂、芳基化试剂或芳基烷基化试剂反应,得到由通式II3表示的吡啶羰基衍生物(其中A和R与上述相同);并将所得的吡啶羰基衍生物与还原剂、烷基化试剂、烯基化试剂、芳基化试剂或芳基烷基化试剂反应,得到通式III的吡啶醇衍生物。