Jul.  17,  2014  122  US 2014/0199617 Al  group or a halogen atom. The alkoxyalkyl group represented  by Rb may be substituted in the same manner.  [0819]  As the alkyl group, cycloalkyl group, aryl group and  aralkyl group (these alkyl group, cycloalkyl group, aryl  group, and aralkyl group may be substituted with the above  functional group, alkoxy group or halogen atom) represented  by Ra and/or Rb, there are exemplified, for example:  [0820]  groups deriving from straight chain or branched  alkane such as methane, ethane, propane, butane, pentane,  hexane, heptanes, octane, nonane, decane, undecane, dode› cane, etc., groups obtained by substituting these groups deriv› ing from alkane with, for example, one kind or more or one  group or more of a cycloalkyl group such as a cyclobutyl  group, a cyclopentyl group or a cyclohexyl group,  [0821]  groups deriving from cycloalkane such as cyclobu› tane, cyclopentane, cyclohexane, cycloheptane, cyclooctane,  norbornane,  adamantane,  noradamantane,  etc.,  groups  obtained by substituting these groups deriving from cycloal› kane with, for example, one kind or more or one group or  more of a straight chain or branched alkyl group such as a  methyl group, an ethyl group, an n-propyl group, an i-propyl  group, an n-butyl group, a 2-methylpropyl group, a 1-meth› ylpropyl group or at-butyl group,  [0822]  groups deriving from an aromatic compound such  as benzene, naphthalene, anthracene, etc., groups obtained by  substituting these groups deriving from aromatic compound  with, for example, one kind or more or one group or more of  a straight chain or branched alkyl group such as a methyl  group, an ethyl group, an n-propyl group, an i-propyl group,  ann-butyl group, a 2-methylpropyl group, a 1-methylpropyl  group or at-butyl group,  [0823]  groups deriving from a heterocyclic compound such  as pyrrolidine, piperidine, morpholine, tetrahydrofuran, tet› rahydropyran, indole, indoline, quinoline, perhydroquino› line, indazole, benzimidazole, etc., groups obtained by sub› stituting these groups deriving from heterocyclic compound  with one kind or more or one group or more of a straight chain  or branched alkyl group or a group deriving from an aromatic  compound, groups obtained by substituting a group deriving  from straight chain or branched alkane and a group deriving  from cycloalkane with one kind or more or one group or more  of a group deriving from an aromatic compound such as a  phenyl group, a naphthyl group, anthracenyl, etc., or groups  obtained by substituting the above substituents with a func› tional group such as a hydroxyl group, a cyano group, an  amino group, a pyrrolidino group, a piperidino group, a mor› pholino group or an oxiso group.  [0824]  Examples of the divalent heterocyclic hydrocarbon  group (preferably having a carbon number of 1 to 20) formed  by combining Ra with each other or a derivative thereof  include a group derived from a heterocyclic compound such  as pyrrolidine, piperidine, morpholine, 1,4,5,6-tetrahydropy› rimidine, 1,2,3,4-tetrahydroquinoline, 1,2,3,6-tetrahydropy› ridine, homopiperazine, 4-azabenzimidazole, benzotriazole,  5-azabenzotriazole,  lH-1,2,3-triazole,  1,4, 7-triazacy› clononane, tetrazole, 7-azaindole, indazole, benzimidazole,  imidazo[l ,2-a ]pyridine, (1 S,4S)-( + )-2,5-diazabicyclo[2.2.1]  heptane, 1,5, 7-triazabicyclo[ 4.4.0]dec-5-ene, indole, indo› line, 1,2,3,4-tetrahydroquinoxaline, perhydroquinoline and  1,5,9-triazacyclododecane, and a group where the group  derived from such a heterocyclic compound is substituted  with one or more kinds of or one or more groups oflinear or  branched  alkane-derived  groups,  cycloalkane-derived  groups, aromatic compound-derived groups, heterocyclic  [0818]  In formula (F), each of the alkyl group, cycloalkyl  group, ary 1 group and aralky 1 group represented by Ra and Rb  may be substituted with a functional group such as hydroxyl  group, cyano group, amino group, pyrrolidino group, piperi› dino group, morpholino group and oxo group, an alkoxy  [0817]  n represents an integer of 0 to 2, m represents an  integer of 1 to 3, and n+m=3.  [0816]  At least two Rb’s may be bonded to form an alicy› clic hydrocarbon group, an aromatic hydrocarbon group, a  heterocyclic hydrocarbon group or derivatives thereof.  [0815]  Each Rb independently represents a hydrogen atom,  an alkyl group, a cycloalkyl group, an aryl group, an aralkyl  group or an alkoxyalkyl group, provided that when one or  more Rb in ----C(Rb )(Rb )(Rb) are hydrogen atoms, at least  one of the remaining Rb is a cyclopropyl group, a 1-alkoxy› alkyl group or an aryl group.  [0814]  In formula (F), Ra represents a hydrogen atom, an  alkyl group, a cycloalkyl group, an aryl group or an aralkyl  group. When n is 2, two Ra’s may be the same with or  different from each other, and two Ra’s may be bonded to  each other to form a divalent heterocyclic hydrocarbon group  (preferably having 20 or less carbon atoms) or derivatives  thereof.  [0811]  Compound (D) can also be constituted by arbitrarily  combining the above described various basic compounds  with the structure represented by formula (d-1).  [0812]  Compound (D) is especially preferably a compound  having the structure represented by the following formula (F).  [0813]  So long as compound (D) is a low molecular weight  compound having a group capable ofleaving by the action of  an acid, compound (D) may be a compound corresponding to  the above various basic compounds.  (F) 