Title:
NOVEL BENZOPYRAN DERIVATIVE
Document Type and Number:
WIPO Patent Application WO/1993/015068
Kind Code:
A1
Abstract:
A benzopyran derivative represented by general formula (I), which has a K+ channel activating function and thus can be widely applied as antiasthmatic, antiepileptic, and so forth. In formula (I), R1 represents hydrogen or hydroxy; R2 and R3 represent each lower alkyl, etc.; R4 and R5 represent each hydrogen, lower haloalkyl, halogeno, nitro, etc.; X represents =O, =S, =N-CN, etc.; and Y represents hydroxy, substituted amino, etc.
Inventors:
KOGA HIROSHI (JP)
NABATA HIROYUKI (JP)
NABATA HIROYUKI (JP)
Application Number:
PCT/JP1993/000086
Publication Date:
August 05, 1993
Filing Date:
January 25, 1993
Export Citation:
Assignee:
CHUGAI PHARMACEUTICAL CO LTD (JP)
International Classes:
A61K31/352; A61P9/00; A61K31/35; A61P9/08; A61P9/10; A61P9/12; A61P11/00; A61P11/06; A61P13/02; A61P15/00; A61P43/00; C07D311/58; C07D311/70; C07D405/04; C07D493/10; C07D495/10; (IPC1-7): A61K31/35; C07D311/58
Domestic Patent References:
| WO1992002514A1 | 1992-02-20 |
Foreign References:
| JPS57167981A | 1982-10-16 |
Other References:
See also references of EP 0632033A4
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