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. Author manuscript; available in PMC: 2020 Sep 20.
Published in final edited form as: Curr Cancer Drug Targets. 2020;20(4):253–270. doi: 10.2174/1568009619666191202101330

Fig. 10.

Fig. 10.

Structures representing various classes of Grp94-selective inhibitors – Radanamycin, radamide, and radester are natural product derived. BnIm maintains the resorcinol moiety but introduces an imidazole ring. The PU compounds represent the purine class, and 54 is a novel inhibitor of the benzamide class.