Patent ID: 11897984
Assignee: KEMIRA OYJ
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 6:
7. A compound or isomer of Formula (I), Formula (II), Formula (III), or Formula (IV):, wherein R1, R2, R3, R4, R5, R6, R7, R8, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, and R44 independently selected from the group consisting of hydrogen, hydroxyl, C1-C6 alkoxy, C2-C6 alkenoxy, C2-C6 alkynoxy, —N(R′)(R″), C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, and C4-C14 aryl;
wherein R′ and R″ are independently selected from the group consisting of hydrogen and C1-C6 alkyl;
wherein R9, R10, R31 and R32 are independently selected from the group consisting of hydrogen, hydroxyl, C1-C6 alkyl, and C1-C6 alkenyl;
wherein y is a single bond or a double bond;
wherein z is a single bond or a double bond;
wherein the following compounds are excluded—
(i) 3′,6′-dihydroxy-5H-spiro[furan-2,9′-xanthen]-5-one —, and
(ii) 9-methylene-9H-xanthene-3,6-diol—, wherein the isomers of Formula (III) comprise a compound of Formula (IIIi), a compound of Formula (IIIii), a compound of Formula (IIIiii), or a combination thereof —, and
wherein the isomers of Formula (IV) comprise a compound of Formula (IVi), a compound of Formula (IVii), a compound of Formula (IViii), or a combination thereof—,