Patent ID: 8569524

Claim:
A bis(tetrahydrofuran) compound represented by the following formula (1): wherein R 1 and R 2 are the same or different, and represent a C 1-4 alkyl group, a C 1-5 alkoxy group, an aryl C 1-5 alkoxy group, a C 2-5 alkenyloxy group, or an aryl C 2-5 alkenyloxy group, or R 1 and R 2 together represent ═O or ═CH 2 ; R 3 represents a hydrogen atom or a group —CH 2 —O—R 4 ; R 4 represents a C 1-4 alkyl group, a C 1-5 alkylcarbonyl group, or an aryl C 1-4 alkyl group optionally having one or more substituents on the aryl ring; and a carbon-carbon bond between “a” and “b” represents a single bond or a double bond.