Title:
【発明の名称】ピペラジン誘導体を製造するための新規な方法および中間体
Document Type and Number:
Japanese Patent JPH10504275
Kind Code:
A
Abstract:
Compounds having the formulawhere R2 is a heteroaryl group linked to the remainder of the molecule via a carbon atom adjacent a nitrogen atom and R4 and R5 are both hydrogen atoms or together represent -SO- or -SO2- and A is C2-C4 alkylene optionally substituted by one or more lower alkyl groups are novel intermediates in the preparation of pharmaceutically useful piperazine derivatives as end compounds. The compounds having formula V where R4 and R5 are hydrogen may be prepared by a rearrangement of a compound having the formula (VI).
Inventors:
Brightwell, Christopher Ian
Robin Gerald, Shepherd
Robin Gerald, Shepherd
Application Number:
JP50052796A
Publication Date:
April 28, 1998
Filing Date:
June 01, 1995
Export Citation:
Assignee:
John Weiss and Brother Limited
International Classes:
C07D213/74; C07D401/12; C07D419/04; (IPC1-7): C07D213/74; C07D401/12; C07D419/04
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)
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