Patent ID: 6423843
Filing Date: 2002-07-23
Classification: C07D

Abstract:
A compound represented by the following formula (IIIa): or formula (IIIb): whereinR1 represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms (which may have one or more substituents selected from the group consisting of a halogen atom and an alkoxyl group having from 1 to 6 carbon atoms), an aralkyl group (having a structure in which an aryl group is substituted on an alkyl group having from 1 to 6 carbon atoms; the aryl group moiety may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms; and the alkyl group moiety may have one or more substituents selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and an alkoxyl groups having from 1 to 6 carbon atoms), an acyl group (which may be either aliphatic or aromatic; in the case of an aliphatic group, it has from 1 to 7 carbon atoms and may have one or more substituents selected from the group consisting of an aryl group, a halogen atom and an alkoxyl group having from 1 to 6 carbon atoms, wherein said aryl group may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkyl group having from 1 to 6 carbon atoms; and in the case of an aromatic group, the aromatic moiety is an aryl group, wherein said aryl group may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms), an alkyloxycarbonyl group having from 2 to 7 carbon atoms (the alkyl group moiety may have one or more substituents selected from the group consisting of a halogen atom and an alkoxyl groups having from 1 to 6 carbon atoms), or an aralkyloxycarbonyl group (wherein the aralkyl group has a structure in which an aryl group is substituted on an alkyl group having from 1 to 6 carbon atoms; the aryl group moiety may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms; and the alkyl group moiety may have one or more substituents selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms); R2 represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms (which may have one or more substituents selected from the group consisting of a halogen atom and an alkoxyl group having from 1 to 6 carbon atoms), an aralkyl group (having a structure in which an aryl group is substituted on an alkyl group having from 1 to 6 carbon atoms; the aryl group moiety may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms; and the alkyl group moiety may have one or more substituents selected from the group consisting of an alkyl groups having from 1 to 6 carbon atoms and an alkoxyl groups having from 1 to 6 carbon atoms), an acyl group (which may be either aliphatic or aromatic; in the case of an aliphatic group, it has from 1 to 7 carbon atoms and may have one or more substituents selected from the group consisting of an aryl group, a halogen atom and an alkoxyl group having from 1 to 6 carbon atoms; and in the cases of an aryl group as an aromatic group and an aryl group as a substituent on the fatty chain in the case of an aliphatic group, it may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms), an alkyloxycarbonyl group having from 2 to 7 carbon atoms (the alkyl group moiety may have one or more substituents selected from the group consisting of a halogen atom and an alkoxyl groups having from 1 to 6 carbon atoms), or an aralkyloxycarbonyl group (wherein the aralkyl group has a structure in which an aryl group is substituted on an alkyl group having from 1 to 6 carbon atoms; the aryl group moiety may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms; and the alkyl group moiety may have one or more substituents selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and an alkoxyl group having from 1 to 6 carbon atoms); and R3 and R4 each independently represents an alkyl group having from 1 to 6 carbon atoms (which may have one or more substituents selected from the group consisting of a halogen atom and an alkoxyl group having from 1 to 6 carbon atoms), or an aralkyl group (having a structure in which an aryl group is substituted on an alkyl group having from 1 to 6 carbon atoms; the aryl group moiety may have one or more substituents selected from the group consisting of a halogen atom, a nitro group, an alkyl group having from 1 to 6 carbon atoms and alkoxyl group having from 1 to 6 carbon atoms; and the alkyl group moiety may have one or more substituents selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and a alkoxyl group having from 1 to 6 carbon atoms); or R3 and R4 may together form a cyclic structure of from five- to eight-membered ring consisting of a polymethylene chain.