| abstract |
A compound of the formula: ** Formula ** or its salt or tautomer, wherein R3 is hydrogen; halogen; cyclic or acyclic aliphatic, substituted or unsubstituted, branched or unbranched; cyclic or acyclic heteroaliphatic, substituted or unsubstituted, branched or unbranched; substituted or unsubstituted acyl; substituted or unsubstituted aryl; substituted or unsubstituted heteroaryl; -ORC; -C (> = O) RC; -CO2RC; -CN; -SCN; -SRC; - SORC; -SO2RC; -NO2; -N (RC) 2; -NHC (O) RC; or -C (RC) 3; wherein each case of RC is independently hydrogen, a protective, aliphatic, heteroaliphatic, acyl group; aryl; heteroaryl; alkoxy; aryloxy; alkylthio; arylthio; amino, alkylamino, dialkylamino, heteroaryloxy; or heteroarylthio; R4 is hydrogen; halogen; cyclic or acyclic aliphatic, substituted or unsubstituted, branched or unbranched; cyclic or acyclic heteroaliphatic, substituted or unsubstituted, branched or unbranched; substituted or unsubstituted acyl; substituted or unsubstituted aryl; substituted or unsubstituted heteroaryl; -ORD; -C (> = O) RD; -CO2RD; -CN; -SCN; -MR. D; - SORD; -SO2RD; -NO2; -N (RD) 2; -NHC (O) RD; or -C (RD) 3; wherein each case of RD is independently hydrogen, a protective, aliphatic, heteroaliphatic, acyl group; aryl; heteroaryl; alkoxy; aryloxy; alkylthio; arylthio; amino, alkylamino, dialkylamino, heteroaryloxy; or heteroarylthio; R5 is hydrogen; halogen; cyclic or acyclic aliphatic, substituted or unsubstituted, branched or unbranched; cyclic or acyclic heteroaliphatic, substituted or unsubstituted, branched or unbranched; substituted or unsubstituted acyl; substituted or unsubstituted aryl; substituted or unsubstituted heteroaryl; -ORE; -CN; -SCN; -SRE; or -N (RE) 2; wherein each case of RE is independently hydrogen, a protective, aliphatic, heteroaliphatic, acyl group; aryl; heteroaryl; alkoxy; aryloxy; alkylthio; arylthio; amino, alkylamino, dialkylamino, heteroaryloxy; or heteroarylthio; R6 is hydrogen, halogen, substituted or unsubstituted aliphatic, substituted or unsubstituted heteroaliphatic, substituted or unsubstituted alkoxy, -OH, -CN, -SCN, -SH, alkylthio, arylthio, -NO2, amino, alkyl amino, dialkyl amino or -SAr, wherein Ar is substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; and each case of P 'is independently hydrogen or a protecting group. |