| CPC C07D 213/68 (2013.01) [A61P 35/00 (2018.01); C07C 235/62 (2013.01); C07C 237/04 (2013.01); C07C 237/38 (2013.01); C07C 311/07 (2013.01); C07D 211/86 (2013.01); C07D 213/06 (2013.01); C07D 213/38 (2013.01); C07D 213/40 (2013.01); C07D 213/50 (2013.01); C07D 213/55 (2013.01); C07D 213/89 (2013.01); C07D 295/088 (2013.01); C07D 295/135 (2013.01); C07D 295/15 (2013.01); C07D 295/16 (2013.01); C07D 401/06 (2013.01); C07D 401/12 (2013.01); C07D 401/14 (2013.01); C07D 405/14 (2013.01); C07D 409/14 (2013.01)] | 16 Claims |
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1. A compound having a structure represented by Formula Ib or a pharmaceutically acceptable salt thereof:
![]() wherein
R4 is substituted alkenyl, substituted acyl, substituted C(O)alkyl, substituted C(O)Oalkyl, substituted C(O)Oaryl, substituted C(O)Oheteroaryl, substituted C(O)N(R5aR5b), or substituted alkylsulfonyl, further wherein each substituted alkenyl, substituted acyl, substituted C(O)alkyl, substituted C(O)Oalkyl, substituted C(O)Oaryl, substituted C(O)Oheteroaryl, substituted C(O)N(R5aR5b), or substituted alkylsulfonyl is substituted with at least one basic nitrogen; and
R5a and R5b are each independently hydrogen, alkyl, or aryl.
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