Synthesis and biological evaluation of naphthoquinone analogs as a novel class of proteasome inhibitors
摘要:
Screening of the NCI Diversity Set-1 identified PI-083 (NSC-45382) a proteasome inhibitor selective for cancer over normal cells. Focused libraries of novel compounds based on PI-083 chloronaphthoquinone and sulfonamide moieties were synthesized to gain a better understanding of the structure-activity relationship responsible for chymotrypsin-like proteasome inhibitory activity. This led to the demonstration that the chloronaphthoquinone and the sulfonamide moieties are critical for inhibitory activity. The pyridyl group in PI-083 can be replaced with other heterocyclic groups without significant loss of activity. Molecular modeling studies were also performed to explore the detailed interactions of PI-083 and its derivatives with the beta 5 and beta 6 subunits of the 20S proteasome. The refined model showed an H-bond interaction between the Asp-114 and the sulfonamide moiety of the PI-083 in the beta 6 subunit. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of naphthoquinone analogs as a novel class of proteasome inhibitors
作者:Harshani R. Lawrence、Aslamuzzaman Kazi、Yunting Luo、Robert Kendig、Yiyu Ge、Sanjula Jain、Kenyon Daniel、Daniel Santiago、Wayne C. Guida、Saïd M. Sebti
DOI:10.1016/j.bmc.2010.06.038
日期:2010.8
Screening of the NCI Diversity Set-1 identified PI-083 (NSC-45382) a proteasome inhibitor selective for cancer over normal cells. Focused libraries of novel compounds based on PI-083 chloronaphthoquinone and sulfonamide moieties were synthesized to gain a better understanding of the structure-activity relationship responsible for chymotrypsin-like proteasome inhibitory activity. This led to the demonstration that the chloronaphthoquinone and the sulfonamide moieties are critical for inhibitory activity. The pyridyl group in PI-083 can be replaced with other heterocyclic groups without significant loss of activity. Molecular modeling studies were also performed to explore the detailed interactions of PI-083 and its derivatives with the beta 5 and beta 6 subunits of the 20S proteasome. The refined model showed an H-bond interaction between the Asp-114 and the sulfonamide moiety of the PI-083 in the beta 6 subunit. (C) 2010 Elsevier Ltd. All rights reserved.