| CPC A61K 31/683 (2013.01) [A61K 31/265 (2013.01); A61K 45/06 (2013.01); A61P 35/00 (2018.01); C07C 69/96 (2013.01); C07F 9/117 (2013.01); C07C 2601/14 (2017.05)] | 13 Claims |

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1. A compound represented by the structure of formula XI,
![]() or formula XII,
![]() wherein n is an integer from 1-6.
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