| 主权项 |
1. A chromene compound represented by the following formula (1). {In the above formula, R1 and R2 are defined by the following (i) or (ii): (i) Either one or both of R1 and R2 are sulfur-containing groups represented by the following formula (2), or either one of them is a sulfur-containing group represented by the formula (2) and the other is a hydrogen atom, hydroxyl group, alkyl group, haloalkyl group, cycloalkyl group, alkoxy group, amino group, heterocyclic group which may have a substituent and bonded to a carbon atom bonded thereto via a ring member nitrogen atom, cyano group, nitro group, formyl group, hydroxycarbonyl group, alkylcarbonyl group, alkoxycarbonyl group, halogen atom, aralkyl group, aralkoxy group, aryloxy group or aryl group.
—S—R6 (2)(wherein R6 is a hydrogen atom, alkyl group, cycloalkyl group or aryl group.) (ii) R1 and R2 are bonded together to form a group represented by the following formula (3): (wherein either one or both of R1′ and R2′ are sulfur-atoms, or either one of them is a sulfur atom and the other is a methylene group, oxygen atom or group represented by the following formula (4): (wherein R9 is a hydrogen atom, hydroxyl group, alkyl group, haloalkyl group, cycloalkyl group, alkoxy group, halogen atom, aralkyl group, aralkoxy group, aryloxy group or aryl group.) R7 and R8 are each a hydrogen atom, hydroxyl group, alkyl group, haloalkyl group, cycloalkyl group, alkoxy group, amino group, heterocyclic group bonded to a carbon atom bonded thereto via a ring member nitrogen atom, cyano group, nitro group, formyl group, hydroxycarbonyl group, alkylcarbonyl group, alkoxycarbonyl group, halogen atom, aralkyl group, aralkoxy group, aryloxy group or aryl group, R7 and R8 may be bonded together to form an aliphatic ring having 3 to 20 ring member carbon atoms together with carbon atoms bonded thereto, “d” is an integer of 1 to 3.) R3, R4 and R5 are each a hydroxyl group, alkyl group, haloalkyl group, cycloalkyl group, alkoxy group, amino group, heterocyclic group bonded to a benzene ring bonded thereto via a ring member nitrogen atom, cyano group, nitro group, formyl group, hydroxycarbonyl group, alkylcarbonyl group, alkoxycarbonyl group, halogen atom, aralkyl group, aralkoxy group, aryloxy group, aryl group, alkylthio group, cycloalkylthio group or arylthio group, “a” is an integer of 0 to 4, “b” and “c” are each an integer of 0 to 5, when “a” is 2 to 4, a plurality of R3′s may be the same or different, and when “b” and “c” are each 2 to 5, a plurality of R4′s and a plurality of R5′s may be the same or different, R10, R11, R12 and R13 are each a hydrogen atom, alkyl group, cycloalkyl group or aryl group, and two groups selected from R10, R11, R12 and R13 may be bonded together to form a ring together with carbon atoms bonded thereto.} |
