Patent ID: 6646132
Filing Date: 2003-11-11
Classification: C07D,C09B,G11B,Y10S

Abstract:
An oxonol compound represented by formula (I-3): wherein R1, R2, R3 and R4 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted heterocyclic group, L1, L2 and L3 each independently represents a methine group which may have a substituent, m represents 0, 1, 2 or 3, R13 and R14 have the same meanings as the groups represented by R5 and R6 in formula (I-2), respectively, R15 and R16 each independently represents a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms, a substituted or unsubstituted alkenyl group having from 2 to 18 carbon atoms, a substituted or unsubstituted alkynyl group having from 2 to 18 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 18 carbon atoms, a substituted or unsubstituted aryl group having from 6 to 18 carbon atoms or a substituted or unsubstituted 4-, 5-, 6- or 7-membered heterocyclic group, the couples of R13 and R14, R13 and R15, R14 and R16, and R15 and R16 each may be combined to form a 4-, 5-, 6- or 7-membered ring, r and s each independently represents 0 or an integer of from 1 to 4 and k represents an integer of from 1 to 10, provided that when r and s each is 2 or more, the plurality of R13 or R14 groups may be the same or different, and when m is 2 or 3, the plurality of L2 and L3 groups may be the same or different.