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General formula (VI) will be described in greater detail below. 

The alkyl group represented by each ofR 6 i to R 63 of gen› eral formula (VI) is preferably an optionally substituted alkyl group having 20 or less carbon atoms, such as a methyl group, an ethyl group, a propyl group, an isopropyl group, ann-butyl group, a sec-butyl group, ahexyl group, a 2-ethylhexyl group, an octy I group or a dodecy I group. An alky I group having 8 or less carbon atoms is more preferred. 

The alkyl group contained in the alkoxycarbonyl group is preferably the same as the alkyl group mentioned above with respect to R 6 i to R63• 

The monovalent aliphatic hydrocarbon ring group may be monocyclic or polycyclic. An optionally substituted mono› cyclic monovalent aliphatic hydrocarbon ring group having 3 to 8 carbon atoms, such as a cyclopropyl group, a cyclopentyl group or a cyclohexyl group, is preferred. 

As the halogen atom, there can be mentioned a fluorine atom, a chlorine atom, a bromine atom or an iodine atom. A fluorine atom is preferred. 

When R 62 represents an alkylene group, the alkylene group is preferably an optionally substituted alkylene group having 1 to 8 carbon atoms, such as a methylene group, an ethylene group, a propylene group, a butylene group, a hexylene group or an octylene group. 

Ar 6 represents a bivalent aromatic ring group. Particular examples of the bivalent aromatic ring groups and particular examples of the substituents that can be introduced in the aromatic ring groups are the same as set forth above with respect to Ar 2 of general formula (II). 

Particular examples of the substituents that can be intro› duced in the above alkyl group, monovalent aliphatic hydro› carbon ring group, alkoxycarbonyl group, alkylene group and bivalent aromatic ring group are the same as set forth above with respect to the R 4 i to R 43 of general formula (VII). 

In the formula, n is preferably 1 or 2, more preferably 1. 

Each of n Y s independently represents a hydrogen atom or a group that is cleaved by the action of an acid, provided that at least one of n Y s is a group that is cleaved by the action of an acid. 

As the group (Y) that is eliminated by the action of an acid, there can be mentioned, for example, ----C(R 36 )(R 37 )(R3s), -C(=0)---0-C(R 36 ) (R 37 )(R 38 ), ----C(Roi)(Ro2) (OR39), -C(R 0 i)(R 0 2)-C(=O)-O----C(R36)(R37)(R3s), --CH (R 36 )(Ar) or the like. 

In the formulae, each of R 36 to R 39 independently repre› sents an alkyl group, a monovalent aliphatic hydrocarbon ring group, a monovalent aromatic ring group, a combination of an alkylene group and a monovalent aromatic ring group or an alkenyl group. R 36 and R 37 may be bonded with each other to thereby form a ring structure. 

Each of Roi and R 02 independently represents a hydrogen atom, an alkyl group, a monovalent aliphatic hydrocarbon ring group, a monovalent aromatic ring group, a combination of an alkylene group and a monovalent aromatic ring group or an alkenyl group. 

Ar represents a monovalent aromatic ring group. 

ring group having 3 to 8 carbon atoms. As such, there can be mentioned, for example, a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cyclooctyl group or the like. When the monovalent aliphatic hy~roca~- bon ring group is polycyclic, it is preferably an ahphat1c hydrocarbon ring group having 6 to 20 carbon atoms.As such, there can be mentioned, for example, an adamantyl group, a norbornyl group, an isobornyl group, a camphonyl group, a dicyclopentyl group, an a-pine! group, a tricyclodecanyl group, a tetracyclododecyl group, an androstanyl group or the like. With respect to these, the carbon atoms of each of the aliphatic hydrocarbon ring groups may be partially substi› tuted with a heteroatom, such as an oxygen atom. 

Each of the monovalent aromatic ring groups represented by R 36 to R 39 , Roi, R 02 andAris preferably one having 6to 10 carbon atoms. For example, there can be mentioned an aryl group, such as a phenyl group, a naphthyl group or an anthryl group, or a monovalent aromatic ring group containing a heteroring, such as thiophene, furan, pyrrole, ben› zothiophene, benzofuran, benzopyrrole, triazine, imidazole, benzimidazole, triazole, thiadiazole or thiazole. 

Each of the groups consisting of an alkylene group com› bined with a monovalent aromatic ring group, represented by R 36 to R 39 , Roi and R 02 is preferably an aralkyl group having 7 to 12 carbon atoms. For example, there can be mentioned a benzyl group, a phenethyl group, a naphthylmethyl group or the like. 

Each of the alkenyl groups represented by R 36 to R 39 , Roi and R 02 preferably has 2 to 8 carbon atoms. For example, there can be mentioned a viny I group, an ally I group, a buteny I group, a cyclohexenyl group or the like. 

The ring formed by the mutual bonding ofR 36 and R 37 may be monocyclic or polycyclic. The monocyclic structure is preferably an aliphatic hydrocarbon ring structure having 3 to 8 carbon atoms. As such, there can be mentioned, for example, a cyclopropane structure, a cyclobutane structure, a cyclopentane structure, a cyclohexane structure, a cyclohep› tane structure, a cyclooctane structure or the like. The poly› cyclic structure is preferably an aliphatic hydrocarbon ring structure having 6 to 20 carbon atoms. As such, there can be mentioned, for example, an adamantane structure, a norbor› nane structure, a dicyclopentane structure, a tricyclodecane structure, a tetracyclododecane structure or the like. With respect to these, the carbon atoms of each of the aliphatic hydrocarbon ring structures may be partially replaced with a heteroatom, such as an oxygen atom. 

A substituent may be introduced in each of the above groups represented by R 36 to R 39 , Roi, R 02 and Ar. As the substituent, there can be mentioned, for example, an alkyl group, a monovalent aliphatic hydrocarbon ring group, an aryl group, an amino group, an amido group, a ureido group, a urethane group, a hydroxyl group, a carboxyl group, a halogen atom, an alkoxy group, a thioether group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a cyano group, a nitro group or the like. Preferably, the number of carbon atoms of each of the substituents is up to 8. 

The group that is cleaved by the action of an acid, Y, preferably has any of the structures of general formula (VI-A) below. 

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