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Delta.sup.1,6 bicyclo ›4,4,0! functional dyes for contrast enhancement in optical imaging

  • US 5,672,333 A
  • Filed: 05/13/1996
  • Issued: 09/30/1997
  • Est. Priority Date: 05/13/1996
  • Status: Expired due to Term
First Claim
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1. A diagnostic composition comprising a compound of the formula:

  • ##STR6## wherein R1, R2, and R5 may be the same or different and are selected from the group consisting of hydrogen, C1 -C10 alkyl, C1 -C10 alkoxyl, hydroxyl, C1 -C10 hydroxyalkyl, C1 -C10 alkoxyalkyl, C1 -C10 aryl, carboxyl, C1 -C10 carboxylalkyl, halogen, nitro, C1 -C10 alkoxycarbonyl, mercapto, C1 -C10 mercaptoalkyl, C1 -C10 alkylthio, sulfonate, and --(CH2)m --N(R6)(R7) wherein R6 and R7 are independently hydrogen or C1 -C10 alkyl, C1 -C10 acyl, and R6 and R7 are capable of forming 5, 6, or 7 membered rings which may optionally be substituted with --O--, --NR8, or --S--;

    R3 and R4 may be the same or different and are selected from the group consisting of C1 -C10 alkyl, C1 -C10 hydroxyalkyl, C1 -C10 alkoxyalkyl, C1 -C10 aryl, C1 -C10 carboxylalkyl, C1 -C10 alkyl sulfonate, mercapto alkyl and --(CH2)m N(R6)(R7);

    W1 and W2 may be the same or different and are selected from the group consisting of --S--, --O--, --Se--, --Te--, --NR8 and C(R9)(R10); and

    m is about 0-10;

    R8, R9, and R10 are independently hydrogen, C1 -C10 alkyl, C1 -C10 alkoxy, C1 -C10 mercaptoalkyl, hydroxyl, C1 -C10 hydroxyalkyl, C1 -C10 alkoxyalkyl, C1 -C10 aryl, C1 -C10 carboxylalkyl, C1 -C10 alkoxycarbonyl, C1 -C10 alkylthio, and --(CH2)m --N(R6)(R7); and

    A is selected from the group consisting of --(CH2)--, --O--, --S--, or --NR8.

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