CPC C07H 15/26 (2013.01) [A61K 31/10 (2013.01); A61K 31/357 (2013.01); A61K 31/4025 (2013.01); A61K 31/4709 (2013.01); A61K 31/7048 (2013.01); A61P 35/00 (2018.01); C07C 1/00 (2013.01); C07D 311/48 (2013.01); C07D 317/50 (2013.01); C07D 317/56 (2013.01); C07D 405/04 (2013.01); C07D 405/12 (2013.01); C07D 405/14 (2013.01); C07D 407/04 (2013.01); C07D 407/12 (2013.01)] | 11 Claims |
1. A compound of Formula IV:
R6 and R7 each independently is selected from —H, or alkoxy;
R is selected from:
R13 is —OH;
R14 is selected from alkoxy, or —OH;
R15 is selected from alkoxy, or —OH;
R16 is —H;
R17 is alkyl;
R11 and R12 each independently is selected from —H, substituted or unsubstituted 5-membered lactone ring, —C(O)O-alkyl;
when R is
R11 and R12 are not together as lactone; and
when R13 is —OH and, R14 and R15 are -alkoxy; then R16 is —H; R6, R7, R11 and R12 are not —H.
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