Benzo[b]thiophen-5-yl derivative and process for producing the same
    9.
    发明授权
    Benzo[b]thiophen-5-yl derivative and process for producing the same 失效
    苯并[b]噻吩-5-基衍生物及其制备方法

    公开(公告)号:US5380878A

    公开(公告)日:1995-01-10

    申请号:US217960

    申请日:1994-03-29

    摘要: This invention relates to a process for producing a compound represented by formula (6a) or (6b): ##STR1## wherein R.sup.2 represents a hydrogen atom or a hydroxyl-protecting group and R.sup.4 and R.sup.5, which may be the same or different, represents lower alkyl groups, using a compound represented by formula (2a) or (2b) obtained by preferential crystallization: ##STR2## and also to a compound represented by the following formula (7) which is an intermediate useful for producing the compound of formula (6a) or (6b): ##STR3## wherein R.sup.1 represents a group represented by formula (8): ##STR4## wherein R.sup.2 and R.sup.3 is as defined above and R.sup.3 represents a hydrogen atom, a group or a carboxyl protecting group represented by formula (9): ##STR5## or a group represented by formula (10): ##STR6## wherein R.sup.2 is as defined above.

    摘要翻译: 本发明涉及一种由式(6a)或(6b)表示的化合物的制备方法:使氢原子或羟基保护基发生反应,可以相同或不同的R 4和R 5表示低级烷基,使用 通过优选结晶获得的式(2a)或(2b)表示的化合物:< IMAGE>(2a)或图像(2b),以及由下式(7)表示的化合物,其是可用于生产 式(6a)或(6b)的化合物:其中R 1表示由式(8)表示的基团:其中R 2和R 3如上所定义,R 3表示氢原子,基团 或由式(9)表示的羧基保护基:由式(9)表示的基团或由式(10)表示的基团:其中R 2如上所定义。