Optically active dibenzazepine derivatives

An optically active 6,7-dihydro-5H-dibenzo[c,e]azepine derivative represented by formula (1):

• where:
• R is represented by formula (2):
• —O—R′—O— (2)
• wherein R′ represents —(CH2)n— that may have a substituent selected from the group consisting of:
• a halogen atom,
• a linear, branched, or cyclic C1-C8 alkyl group,
• a linear, branched, or cyclic C1-C8 alkoxy group,
• an oxo group,
• an aryl group,
• an arylcarbonyl group,
• an alkylcarbonyl group,
• an arylsulfonyl group, and
• an alkylsulfonyl group;
• n is an integer of 1 to 8;
• R1 and R2 are the same or different, and represent:
• a hydrogen atom;
• a halogen atom;
• a linear, branched, or cyclic C1-C8 alkyl group that may have a substituent selected from the group consisting of:
• a halogen atom,
• a C6-C14 aryl group, and
• a linear, branched, or cyclic C1-C8 alkoxy group;
• or
• a C6-C14 aryl group that may have a substituent selected from the group consisting of:
• a halogen atom,
• a linear, branched, or cyclic C1-C8 alkyl group, and
• a linear, branched, or cyclic C1-C8 alkoxy group;
• R3 and R4 are the same or different, and represent a linear, branched, or cyclic C1-C30 alkyl group, or
• R3 and R4 together form
• wherein * represents optical activity;
• Ar represents a C6-C14 aryl group that may have a substituent selected from the group consisting of:
• a halogen atom,
• a linear, branched, or cyclic C1-C8 alkyl group,
• a linear, branched, or cyclic C1-C8 alkoxy group,
• a linear, branched, or cyclic C1-C8 alkylcarbonyl group,
• a linear, branched, or cyclic C1-C8 alkylsulfonyl group,
• a C6-C14 arylcarbonyl group, and
• a C6-C14 arylsulfonyl group;
• or
• Ar represents a C3-C8 heteroaryl group that may have a substituent selected from the group consisting of:
• a halogen atom,
• a linear, branched, or cyclic C1-C8 alkyl group,
• a linear, branched, or cyclic C1-C8 alkoxy group,
• a linear, branched, or cyclic C1-C8 alkylcarbonyl group,
• a linear, branched, or cyclic C1-C8 alkylsulfonyl group,
• a C6-C14 arylcarbonyl group, and
• a C6-C14 arylsulfonyl group;
• X— represents a counter anion;
• and
• * represents optical activity.