Pest control agents

A composition for use as a pest control agent, comprising a compound represented by formula (Ia) or an agriculturally and horticulturally acceptable salt thereof as active ingredient and an agriculturally and horticulturally acceptable carrier:

• wherein
• Het2 represents optionally substituted 3-pyridyl,
• R11 represents hydroxyl,
• optionally substituted C1-6 alkylcarbonyloxy,
• optionally substituted C2-6 alkenylcarbonyloxy,
• optionally substituted C2-6 alkynylcarbonyloxy,
• optionally substituted C1-6 alkyloxy,
• optionally substituted C2-6 alkenyloxy,
• optionally substituted C2-6 alkynyloxy,
• optionally substituted benzyloxy, or
• oxo in the absence of a hydrogen atom at the 13-position, or
• the bond between 5-position and 13-position represents a double bond in the absence of R11 and a hydrogen atom at the 5-position,
• R12 represents hydroxyl,
• optionally substituted C1-18 alkylcarbonyloxy,
• optionally substituted C2-6 alkenylcarbonyloxy,
• optionally substituted C2-6 alkynylcarbonyloxy,
• optionally substituted benzoyloxy, or
• optionally substituted C1-6 alkylsulfonyloxy,
• R13 represents a hydrogen atom,
• hydroxyl,
• optionally substituted C1-18 alkylcarbonyloxy,
• optionally substituted C2-6 alkenylcarbonyloxy,
• optionally substituted C2-6 alkynylcarbonyloxy,
• optionally substituted benzoyloxy,
• optionally substituted C1-6 alkylsulfonyloxy,
• optionally substituted benzenesulfonyloxy, or
• optionally substituted five- or six-membered heterocyclic thiocarbonyloxy, or
• R12 and R13 together represent —O—CR12′R13′—O— wherein R12′ and R13′, which may be the same or different, represent a hydrogen atom, C1-6 alkyl, C1-6 alkyloxy, C2-6 alkenyl, optionally substituted phenyl, or optionally substituted benzyl, or R12′ and R13′ together represent oxo or C2-6 alkylene, and
• R14 represents a hydrogen atom,
• hydroxyl,
• optionally substituted C1-18 alkylcarbonyloxy,
• optionally substituted C2-6 alkenylcarbonyloxy,
• optionally substituted C2-6 alkynylcarbonyloxy,
• optionally substituted benzoyloxy,
• optionally substituted C1-6 alkylsulfonyloxy,
• optionally substituted benzenesulfonyloxy,
• optionally substituted benzyloxy,
• optionally substituted C1-6 alkyloxy,
• optionally substituted C2-6 alkenyloxy,
• optionally substituted C2-6 alkynyloxy,
• C1-6 alkyloxy-C1-6 alkyloxy,
• C1-6 alkylthio-C1-6 alkyloxy,
• C1-6 alkyloxy-C1-6 alkyloxy-C1-6 alkyloxy,
• optionally substituted C1-6 alkyloxycarbonyloxy,
• optionally substituted C1-6 alkylaminocarbonyloxy,
• optionally substituted saturated or unsaturated five- or six-membered heterocyclic oxy,
• optionally substituted saturated or unsaturated five- or six-membered heterocyclic carbonyloxy,
• optionally substituted thieno[3,2-b]pyridylcarbonyloxy,
• optionally substituted 1H-indolylcarbonyloxy,
• optionally substituted saturated or unsaturated five- or six-membered heterocyclic thiocarbonyloxy, or
• oxo in the absence of a hydrogen atom at the 7-position.

A compound represented by formula (Ib) or an agriculturally and horticulturally acceptable salt thereof:

• wherein
• Het1 represents 3-pyridyl,
• R1 represents hydroxyl,
• R2 and R3 represent propionyloxy or optionally substituted cyclic C3-6 alkylcarbonyloxy, and
• R4 represents hydroxyl,
• optionally substituted cyclic C3-6 alkylcarbonyloxy,
• optionally substituted benzoyloxy, or optionally substituted saturated or unsaturated five- or six-membered heterocyclic carbonyloxy, provided that
• a compound wherein
• Het1 represents 3-pyridyl,
• R1 represents hydroxyl,
• R2 and R3 represent propionyloxy, and
• R4 represents hydroxyl,
• is excluded.