Patent number: 6423716
Abstract: The present invention relates to nitrogen-containing heterocyclic compounds represented by formula (I):
wherein W represents 1,4-piperazinediyl, etc.; U represents NR1R2 (wherein R1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, etc.; and R2 represents a hydrogen atom, etc. ), OR4, or SR5; V represents an oxygen atom, a sulfur atom, N—R6, or CR7R8, at least one of X, Y and Z represents a nitrogen atom, and the others are the same or different, and each represents a nitrogen atom or C—RA; and D1, D2, D3 and D4 each independently represent C—RB, a nitrogen atom, an oxygen atom, a sulfur atom, etc., optional adjoining two among D1 to D4 are combined to represent a nitrogen atom, N—R2A, an oxygen atom, a sulfur atom, etc.
Type:
Grant
Filed:
September 29, 2000
Date of Patent:
July 23, 2002
Assignee:
Kyowa Hakko Kogyo Co., Ltd.
Inventors:
Kenji Matsuno, Yuji Nomoto, Michio Ichimura, Shin-ichi Ide, Shoji Oda