Patent ID: 6037340
Filing Date: 2000-03-14
Classification: C07B,C07D,C40B

Abstract:
A compound represented by the formula (Formula Ia): ##STR21## in which R.sub.2a and R.sub.2b are each, independently, hydrogen, alkyl, aryl, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aryloxycarbonyl, aminocarbonyl, alkylsulfonyl, or arylsulfonyl; or R.sub.2a and R.sub.2b taken together with the nitrogen atom to which they are attached, form a 3- to 8-membered ring;R.sub.3 is hydrogen, --CN or --C(O)R.sub.6 ;R.sub.4 is alkyl, aralkyl or aryl;R.sub.5 is hydrogen, halogen, alkyl, aryl, or --C(O)R.sub.5' ; andR.sub.5' and R.sub.6 are each independently hydroxyl, alkyl, aryl, alkoxy, aryloxy, --SH, alkylthio, arylthio, amino, or a linker to a solid support;or a salt thereof, with the proviso that R.sub.2a and R.sub.2b are not hydrogen simultaneously.