#$%^&*AU2004205245B220130418.pdf#####ABSTRACT The invention provides a compound of Formula I ~ t 5a wherein each of R1, R1, and Rs, is a group independently selected from hydrogen, CI-C2oalkyl, C10 C2oalkonyI, aryl, alkaryl. aralkyl, heterocyclyl, hydny, halogen, amino, alkylamino, dialkylamino, alkyloxy, nitro, carboxyl, aminocarbonyl, alkyloxycarbonyl, alkynyl, alkylcarbonyloxy and alkylcarbonylmino, wherein each alkyl, alkenyl, alkyloxy, ary], akaryl, aralkyl, or heterocyclyl group present in these may be substituted with one or more groups selected from hydroxy halogen, alkyloxy, amino, alkylamino, dialkylamino, alkyloxy. nitro, carboxyl, aminocarbonyL 15 alkyloxycarbonyl, alkynyl, alkylcarbonyloxy and alkyloarbonylamino each of R2, R4 and R6 is a group selected from hydrogen and Ct-Czoalkyl each ofZi, Z and 4 as a group chosen from -C(Ry7Ps)-, -C(R7R)-C(Rjo)-, 20 -C(k7R,)-C(R.Ri)-C(Ri P-L+, 75-C(RRa)-C(RRi)-C(Riilty)-C itRzvC(RisRi,, and -C(R 7R-C(RRio)-C(Ru1 R4)-C(RR 1 4)-(CH2 ).-C(R5 Rs)- each of R,. R, Rtn. Ra and Ras is a group independently selected from hydrogen, C1Czoalkyl, CI-2oalkenyl, aryl, alkuryl, aralkyl, heterocyclyl, hydroxy, halogen, amino, alkylamino, 5 dialkylamino, alkyloxy, nitro, carboxyl, aminncarbonyl, alkyloxycarbony4, alkynyl, alkylcarbonyloxy or alkylcarbonylamino, wherein each alkyl, alkenyl, alkyloxy, aryl, alkaryl, eralkyl, or heterocyclyl group present in these may be substituted with one or more groups selected from hydroxy, halogen, amino, alkylamino, dialkylamino, alkyloxy, nitro, carboxyl, aminocarbonyl, alkyloxycarbonyl, ulkynyl, alkylcarbonyloxy and aky4carbonyumino and each of R2 , R4. R &, i, Rio. Ru, R 14 and 10 R 16 is chosen from hydrogen and Ci-Cmalkyl and wherein not only are ZI, Z2, and Z3 the same or different but also Rp, Rg and when present R, RIo, RI], R12, R, R14, Ris, Ri& may be the same in said Zi, Z2, and Z3 or in two of those groups, or those R groups maybe different in all three Z groups 15 Z, Z2 and Za with
