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US 5,648,523 AGranted
Fullerene derivatives as free-radical scavengers
OwnerLong Y. Chianginventor
Life of this patent
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Abstract
The invention relates to fullerene derivatives which are capable of scavenging free radicals. The derivatives have the formula F(--X).sub.m (--Y--Z).sub.n, in which F is a fullerene core; each X is independently --CO.sub.2.sup.-, --SO.sub.3.sup.-, --SH, or the like; each --Y--Z is independently (C.sub.3-30 alkyl ether).sub.50 --CH.sub.2 --CO.sub.2.sup.-, (C.sub.3-30 alkyl ester).sub.50 --CH.sub.2 --SO.sub.3.sup.-, (C.sub.3-30 alkyl amide).sub.50 --CH.sub.2 --SH, or the like; m is 0-30; n is 0-30; and the sum of m and n is 2-30.
Claims20
A compound of the following formula:
- F(--X).sub.m (--Y--Z).sub.n
- wherein
- F is a fullerene core;
- each X is independently --CO.sub.2.sup.-, --SO.sub.3.sup.-, --SH, --PO.sub.3.sup.-, --O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO(O.sup.-)--O--PO.sub.3.sup.-2, or --O--PO(O.sup.-)--O--CH.sub.2 --CH.sub.2 --NH.sub.3.sup.+ ;
- each Y is --A--B--, in which A is independently --CH.sub.2 --, --O--, --S--, --NH--CO--NH--, or --NH--CO--;
- and B is independently --R.sub.a --O--[Si(CH.sub.3).sub.2 --O--].sub.1-100, C.sub.1-2000 alkyl, C.sub.6-40 aryl, C.sub.7-60 alkylaryl, C.sub.7-60 arylalkyl, (C.sub.1-30 alkyl ether).sub.1-100, (C.sub.6-40 aryl ether).sub.1-100, (C.sub.7-60 alkylaryl ether).sub.1-100, (C.sub.7-60 arylalkyl ether).sub.1-100, (C.sub.1-30 alkyl thioether).sub.1-100, (C.sub.6-40 aryl thioether).sub.1-100, (C.sub.7-60 alkylaryl thioether).sub.1-100, (C.sub.7-60 arylalkyl thioether).sub.1-100, (C.sub.2-50 alkyl ester).sub.1-100, (C.sub.7-60 aryl ester).sub.1-100, (C.sub.8-70 alkylaryl ester).sub.1-100, (C.sub.8-70 arylalkyl ester).sub.1-100, --R--CO--O--(C.sub.1-30 alkyl ether).sub.1-100, --R--CO--O--(C.sub.6-40 aryl ether).sub.1-100, --R--CO--O--(C.sub.7-60 alkylaryl ether).sub.1-100, --R--CO--O--(C.sub.7-60 arylalkyl ether).sub.1-100, (C.sub.4-50 alkyl urethane).sub.1-100, (C.sub.14-60 aryl urethane).sub.1-100, (C.sub.10-80 alkylaryl urethane).sub.1-100, (C.sub.10-80 arylalkyl urethane).sub.1-100, (C.sub.5-50 alkyl urea).sub.1-100, (C.sub.14-60 aryl urea).sub.1-100, (C.sub.10-80 alkylaryl urea).sub.1-100, (C.sub.10-80 arylalkyl urea).sub.1-100, (C.sub.2-50 alkyl amide).sub.1-100, (C.sub.7-60 aryl amide).sub.1-100, (C.sub.8-70 alkylaryl amide).sub.1-100, (C.sub.8-70 arylalkyl amide).sub.1-100, (C.sub.3-30 alkyl anhydride).sub.1-100, (C.sub.8-50 aryl anhydride).sub.1-100, (C.sub.9-60 alkylaryl anhydride).sub.1-100, (C.sub.9-60 arylalkyl anhydride).sub.1-100, (C.sub.2-30 alkyl carbonate).sub.1-100, (C.sub.7-50 aryl carbonate).sub.1-100, (C.sub.8-60 alkylaryl carbonate).sub.1-100, (C.sub.8-60 arylalkyl carbonate).sub.1-100,--R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100 --CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100 --R.sub.3 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100 --CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100 --R.sub.3 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--NH--(C.sub.2-50 alkyl amide, C.sub.7-60 aryl amide, C.sub.8-70 alkylaryl amide, or C.sub.8-70 arylalkyl amide).sub.1-100, or --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--NH--(C.sub.2-50 alkyl amide, C.sub.7-60 aryl amide, C.sub.8-70 alkylaryl amide, or C.sub.8-70 arylalkyl amide).sub.1-100 ;
- each Z is --C--D, wherein C is independently --R--, --R--Ar--, --Ar--, or --Ar--R--;
- and D is independently --OH, --SH, --SO.sub.3.sup.-, --OSO.sub.3.sup.-, --CO.sub.2.sup.-, --PO.sub.3.sup.-, --O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO(O.sup.-)O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--CH.sub.2 --CH.sub.2 --NH.sub.3.sup.+, --NH.sub.2, --NH.sub.3.sup.+, --N.sup.+ H.sub.2 R.sub.b, --N.sup.+ HR.sub.b R.sub.c, or --N.sup.+ R.sub.b R.sub.c R.sub.d ;
- and
- m is 0-30, n is 0-30, and the sum of m and n is 2-30;
- in which each of R, R.sub.1, R.sub.2, R.sub.3, R.sub.a, R.sub.b, R.sub.c, and R.sub.d is independently C.sub.1-20 alkyl, and Ar is independently C.sub.6-40 aryl.
8 more elements
A compound of the following formula:
- F(--X).sub.m (--Y--Z).sub.n
- wherein
- F is a fullerene core;
- each X is independently --CO.sub.2.sup.-, --SO.sub.3.sup.-, --OH, --SH, --PO.sub.3.sup.-, --O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--CH.sub.2 --CH.sub.2 --NH.sub.3.sup.+, --NH.sub.2, --NH.sub.3.sup.+, --N.sup.+ H.sub.2 R.sub.a, --N.sup.+ HR.sub.a R.sub.b, or --N.sup.+ R.sub.a R.sub.b R.sub.c ;
- each Y is --A--B--, in which A is independently --CH.sub.2 --, --O--, --S--, --NH--CO--NH--, or --NH--CO--;
- and B is independently --R.sub.d --O--[Si(CH.sub.3).sub.2 --O--].sub.1-100, C.sub.1-2000 alkyl, C.sub.6-40 aryl, C.sub.7-60 alkylaryl, C.sub.7-60 arylalkyl, (C.sub.1-30 alkyl ether).sub.1-100,(C.sub.6-40 aryl ether).sub.1-100, (C.sub.7-60 alkylaryl ether).sub.1-100, (C.sub.7-60 arylalkyl ether).sub.1-100, (C.sub.1-30 alkyl thioether).sub.1-100, (C.sub.6-40 aryl thioether).sub.1-100, (C.sub.7-60 alkylaryl thioether).sub.1-100, (C.sub.7-60 arylalkyl thioether).sub.1-100, (C.sub.2-50 alkyl ester).sub.1-100, (C.sub.7-60 aryl ester).sub.1-100, (C.sub.8-70 alkylaryl ester).sub.1-100, (C.sub.8-70 arylalkyl ester).sub.1-100, --R--CO--O--(C.sub.1-30 alkyl ether).sub.1-100, --R--CO--O--(C.sub.6-40 aryl ether).sub.1-100, --R--CO--O--(C.sub.7-60 alkylaryl ether).sub.1-100, --R--CO--O--(C.sub.7-60 arylalkyl ether).sub.1-100, (C.sub.4-50 alkyl urethane).sub.1-100, (C.sub.14-60 aryl urethane).sub.1-100, (C.sub.10-80 alkylaryl urethane).sub.1-100, (C.sub.10-80 arylalkyl urethane).sub.1-100, (C.sub.5-50 alkyl urea).sub.1-100, (C.sub.14-60 aryl urea).sub.1-100, (C.sub.10-80 alkylaryl urea).sub.1-100, (C.sub.10-80 arylalkyl urea).sub.1-100, (C.sub.2-50 alkyl amide).sub.1-100, (C.sub.7-60 aryl amide).sub.1-100, (C.sub.8-70 alkylaryl amide).sub.1-100, (C.sub.8-70 arylalkyl amide).sub.1-100, (C.sub.3-30 alkyl anhydride).sub.1-100, (C.sub.6-60 aryl anhydride).sub.1-100, (C.sub.9-60 alkylaryl anhydride).sub.1-100, (C.sub.9-60 arylalkyl anhydride).sub.1-100, (C.sub.2-30 alkyl carbonate).sub.1-100, (C.sub.7--50 aryl carbonate).sub.1-100, (C.sub.8-60 alkylaryl carbonate).sub.1-100, (C.sub.8-60 arylalkyl carbonate).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100 --CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100 --R.sub.3 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100 --CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100 --R.sub.3 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--NH--(C.sub.2-50 alkyl amide, C.sub.7-60 aryl amide, C.sub.8-70 alkylaryl amide, or C.sub.8-70 arylalkyl amide).sub.1-100, or --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--NH--(C.sub.2-50 alkyl amide, C.sub.7-60 aryl amide, C.sub.8-70 alkylaryl amide, or C.sub.8-70 arylalkyl amide).sub.1-100 ;
- each Z is --C--D, wherein C is independently --R--, --R--Ar--, --Ar--, or --Ar--R--;
- and D is independently --OH, --SH, --SO.sub.3.sup.-, --OSO.sub.3.sup.-, --CO.sub.2.sup.-, --PO.sub.3.sup.-, --O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO(O.sup.-)O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--CH.sub.2 --CH.sub.2 --NH.sub.3.sup.+, --NH.sub.2, --NH.sub.3.sup.+, --N.sup.+ H.sub.2 R.sub.a, --N.sup.+ HR.sub.a' R.sub.b', or --N.sup.+ R.sub.a' R.sub.b' R.sub.c' ;
- and
- m is 0-30, n is 1-30, and the sum of m and n is 2-30;
- in which each of R, R.sub.1, R.sub.2, R.sub.3, R.sub.a, R.sub.b, R.sub.c, R.sub.d, R.sub.a', R.sub.b', and R.sub.c' is independently C.sub.1-20 alkyl, and Ar is independently C.sub.6-40 aryl.
8 more elements
A composition comprising a biologically compatible substance and a compound of the following formula:
- F(--X).sub.m (--Y--Z).sub.n
- wherein
- F is a fullerene core;
- each X is independently --CO.sub.2.sup.-, --SO.sub.3.sup.-, --SH, --OH, --PO.sub.3.sup.-, --O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--CH.sub.2 --CH.sub.2 --NH.sub.3.sup.+, --NH.sub.2, --NH.sub.3.sup.+, --N.sup.+ H.sub.2 R.sub.a, --N.sup.+ HR.sub.a R.sub.b, or --N.sup.+ R.sub.a R.sub.b R.sub.c ;
- each Y is --A--B--, in which A is independently --CH.sub.2 --, --O--, --NH--, --S--, --O--CO--, --O--CO--O--, --O--CO--NH--, --NH--CO--NH--, or --NH--CO--;
- and B is independently--R.sub.d --O--[Si(CH.sub.3).sub.2 --O--].sub.-100, C.sub.1-2000 alkyl, C.sub.6-40 aryl, C.sub.7-60 alkylaryl, C.sub.7-60 arylalkyl, (C.sub.1-30 alkyl ether).sub.-100, (C.sub.6-40 aryl ether).sub.1-100, (C.sub.7-60 alkylaryl ether).sub.1-100, (C.sub.7-60 arylalkyl ether).sub.1-100, (C.sub.1-30 alkyl thioether).sub.1-100, (C.sub.6-40 aryl thioether).sub.1-100, (C.sub.7-60 alkylaryl thioether).sub.1-100, (C.sub.7-60 arylalkyl thioether).sub.1-100, (C.sub.2-50 alkyl ester).sub.1-100, (C.sub.7-60 aryl ester).sub.1-100, (C.sub.8-70 alkylaryl ester).sub.1-100, (C.sub.8-70 arylalkyl ester).sub.1-100, --R--CO--O--(C.sub.1-30 alkyl ether).sub.1-100, --R--CO--O--(C.sub.6-40 aryl ether).sub.1-100, --R--CO--O--(C.sub.7-60 alkylaryl ether).sub.1-100, --R--CO--O--(C.sub.7-60 arylalkyl ether).sub.-100, (C.sub.4-50 alkyl urethane).sub.-100, (C.sub.14-60 aryl urethane).sub.1-100, (C.sub.10-80 alkylaryl urethane).sub.-100, (C.sub.10-80 arylalkyl urethane).sub.1-100, (C.sub.5-50 alkyl urea).sub.-100, (C.sub.14-60 aryl urea).sub.1-100, (C.sub.10-80 alkylaryl urea).sub.1-100, (C.sub.10-80 arylalkyl urea).sub.-100, (C.sub.2-50 alkyl amide).sub.1-100, (C.sub.7-60 aryl amide).sub.1-100, (C.sub.8-70 alkylaryl amide).sub.1-100, (C.sub.8-70 arylalkyl amide).sub.1-100, (C.sub.3-30 alkyl anhydride).sub.1-100, (C.sub.8-50 aryl anhydride).sub.1-100, (C.sub.9-60 alkylaryl anhydride).sub.1-100, (C.sub.9-60 arylalkyl anhydride).sub.1-100, (C.sub.2-30 alkyl carbonate).sub.-100, (C.sub.7-50 aryl carbonate)1-100, (C.sub.8-60 alkylaryl carbonate).sub.1-100, (C.sub.8-60 arylalkyl carbonate).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.1-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.-100, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.-100 --CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.-100 --R.sub.3 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.-100, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.-100, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.1-30 alkyl ether, C.sub.6-40 aryl ether, C.sub.7-60 alkylaryl ether, or C.sub.7-60 arylalkyl ether).sub.-100 --CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--(C.sub.2-50 alkyl ester, C.sub.7-60 aryl ester, C.sub.8-70 alkylaryl ester, or C.sub.8-70 arylalkyl ester).sub.1-100 --R.sub.3 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--O--, --R.sub.1 --O--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--NH--(C.sub.2-50 alkyl amide, C.sub.7-60 aryl amide, C.sub.8-70 alkylaryl amide, or C.sub.8-70 arylalkyl amide).sub.-100, or --R.sub.1 --NH--CO--NH--(R.sub.2 or Ar--R.sub.2 --Ar)--NH--CO--NH--(C.sub.2-50 alkyl amide, C.sub.7-60 aryl amide, C.sub.8-70 alkylaryl amide, or C.sub.8-70 arylalkyl amide).sub.-100 ;
- each Z is --C--D, wherein C is independently --R--, --R--Ar--, --Ar--, or --Ar--R--;
- and D is independently --H, --OH, --SH, --SO.sub.3.sup.-, --OSO.sub.3.sup.-, --CO.sub.2.sup.-, --PO.sub.3.sup.-, --O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO.sub.3.sup.-2, --O--PO(O.sup.-)--O--PO(O.sup.-)O--PO.sub.3.sup.-2, O--PO(O.sup.-)--O--CH.sub.2 --CH.sub.2 --NH.sub.3.sup.+, --NH.sub.2, --NH.sub.3.sup.+, --N.sup.+ H.sub.2 R.sub.a', --N.sup.+ HR.sub.a' R.sub.b', or --N.sup.+ R.sub.a' R.sub.b' R.sub.c' ;
- and
- m is 0-30, n is 0-30, and the sum of m and n is 2-30;
- in which each of R, R.sub.1, R.sub.2, R.sub.3, R.sub.a, R.sub.b, R.sub.c, R.sub.d, R.sub.a', R.sub.b', and R.sub.c', is independently C.sub.1-20 alkyl, and Ar is independently C.sub.6-40 aryl.
8 more elements
Dependencies are inferred from the claim text.