Patent ID: 8759550

Claim:
An oligofuran represented by the structure of formula XIII: wherein R 1 , R 1 ′, R 1 ″, R 2 , R 2 ″, R 3 and R 4 are independently hydrogen, C 4 -C 18 alkyl, C 1 -C 18 alkenyl, C 1 -C 18 alkynyl, (C 0 -C 6 alkyl)-cycloalkyl, (C 0 -C 6 alkyl)-heterocycloalkyl, (C 0 -C 18 alkyl)-aryl, (C 0 -C 18 alkyl)-heteroaryl, CN, CO 2 H, OH, SH, NH 2 , NO 2 , halogen, CO 2 —(C 1 -C 18 alkyl), O—(C 2 -C 18 alkyl), S—(C 1 -C 18 alkyl), NH(C 1 -C 18 alkyl), NHC(O)(C 1 -C 18 alkyl) or N[(C 1 -C 18 alkyl)][C(O)(C 1 -C 18 alkyl)], halo-(C 1 -C 18 alkyl), hydroxyl-(C 1 -C 18 alkyl), amino-(C 1 -C 18 alkyl), phenyl, aryl, cycloalkyl or heteroaryl; wherein said alkyl, aryl, cycloalkyl and heteroaryl groups are optionally substituted with 1-3 groups comprising halide, C 1 -C 6 alkyl, CN, CO 2 H, OH, SH, NH 2 , CO 2 —(C 1 -C 6 alkyl), O—(C 1 -C 6 alkyl), S—(C 1 -C 6 alkyl), NH(C 1 -C 6 alkyl), NHC(O)(C 1 -C 6 alkyl) or N[(C 1 -C 6 alkyl)][C(O)(C 1 -C 6 alkyl)]; R 2 ′ is C 4 -C 18 alkyl, C 1 -C 18 alkenyl, C 1 -C 18 alkynyl, (C 0 -C 6 alkyl)-cycloalkyl, (C 0 -C 6 alkyl)-heterocycloalkyl, (C 0 -C 18 alkyl)-aryl, (C 0 -C 18 alkyl)-heteroaryl, CN, CO 2 H, OH, SH, NH 2 , NO 2 , halogen, CO 2 —(C 1 -C 18 alkyl), O—(C 2 -C 18 alkyl), S—(C 1 -C 18 alkyl), NH(C 1 -C 18 alkyl), NHC(O)(C 1 -C 18 alkyl) or N[(C 1 -C 18 alkyl)][C(O)(C 1 -C 18 alkyl)], halo-(C 1 -C 18 alkyl), hydroxyl-(C 1 -C 18 alkyl), amino-(C 1 -C 18 alkyl), phenyl, aryl, cycloalkyl or heteroaryl; wherein said alkyl, aryl, cycloalkyl and heteroaryl groups are optionally substituted with 1-3 groups comprising halide, C 1 -C 6 alkyl, CN, CO 2 H, OH, SH, NH 2 , CO 2 —(C 1 -C 6 alkyl), O—(C 1 -C 6 alkyl), S—(C 1 -C 6 alkyl), NH(C 1 -C 6 alkyl), NHC(O)(C 1 -C 6 alkyl) or N[(C 1 -C 6 alkyl)][C(O)(C 1 -C 6 alkyl)]; or R 1 and R 2 ; R 1 ′ and R 2 ′; R 1 ″ and R 2 ″ combine to form a 4-8 membered ring comprising 0-3 double bonds and 0-3 heteroatoms selected from O, N, Se or S wherein said 4-8 membered ring is optionally substituted with 1-3 groups comprising C 1 -C 18 -alkyl, (C 0 -C 6 alkyl)-cycloalkyl, (C 0 -C 6 alkyl)-aryl, (C 0 -C 6 alkyl)-heteroaryl, CN, CO 2 H, OH, SH, NH 2 , CO 2 —(C 1 -C 6 alkyl), O—(C 1 -C 6 alkyl), S—(C 1 -C 6 alkyl), NH(C 1 -C 6 alkyl), dialkylamine, NHC(O)(C 1 -C 6 alkyl) or N[(C 1 -C 6 alkyl)][C(O)(C 1 -C 6 alkyl)]; wherein said aryl, cycloalkyl and heteroaryl groups of said (C 0 -C 6 alkyl)-aryl, (C 0 -C 6 alkyl)-cycloalkyl and (C 0 -C 6 alkyl)-heteroaryl groups are optionally substituted with 1-3 groups comprising halide, C 1 -C 6 alkyl, CN, CO 2 H, OH, SH, NH 2 , CO 2 —(C 1 -C 6 alkyl), O—(C 1 -C 6 alkyl), S—(C 1 -C 6 alkyl), NH(C 1 -C 6 alkyl), N(R 4 )(R 5 ), NHC(O)(C 1 -C 6 alkyl) or N[(C 1 -C 6 alkyl)][C(O)(C 1 -C 6 alkyl)]; m is an integer between 1-50; m′ is an integer between 0-50 and n is an integer between 1-50.