| 摘要 |
PROBLEM TO BE SOLVED: To provide a heterocyclic compound having an elastase inhibiting activity in vivo. SOLUTION: The heterocyclic compound is represented by formula (I) [wherein R<SP>1</SP>is a heterocyclic group represented by formula (II) (wherein A is null or a benzene ring; X is O,S, or NH; and Y is N or CH), and R<SP>2</SP>and R<SP>3</SP>, which may be the same as or different from each other, are each a -CF<SB>3</SB>group or -O-C(=O)-R<SP>4</SP>(wherein R<SP>4</SP>is a lower alkyl or the like)]. COPYRIGHT: (C)2005,JPO&NCIPI
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