New insights into the structure–cytotoxicity relationship of spirostan saponins and related glycosides
摘要:
A variety of spirostan saponins and related glycosides were synthesized and evaluated for their cytotoxicity against the human myeloid leukemia cell line (HL-60). A linear glycosylation strategy allowed for accessing a variety of functionalization patterns at both the spirostanic and the saccharide moieties, which provides new information regarding the structure-cytotoxicity relationship of this family of steroidal glycosides. Intriguing results were achieved with respect to hecogenyl and 5 alpha-hydroxy-laxogenyl beta-chacotriosides, turning out to be the former very cytotoxic and the latter no cytotoxic at all. Importantly, the partially pivaloylated beta-D-glucosides of 5 alpha-hydroxy-laxogenin were the most potent cytotoxic compounds among all tested glycosides. This comprises the first report on acylated spirostanyl glucosides displaying significant cytotoxicity, and therefore, it opens up new opportunities toward the development of saponin analogues as anticancer agents. (C) 2012 Elsevier Ltd. All rights reserved.
New insights into the structure–cytotoxicity relationship of spirostan saponins and related glycosides
作者:Karell Pérez-Labrada、Ignacio Brouard、Sara Estévez、María Teresa Marrero、Francisco Estévez、Jaime Bermejo、Daniel G. Rivera
DOI:10.1016/j.bmc.2012.02.026
日期:2012.4
A variety of spirostan saponins and related glycosides were synthesized and evaluated for their cytotoxicity against the human myeloid leukemia cell line (HL-60). A linear glycosylation strategy allowed for accessing a variety of functionalization patterns at both the spirostanic and the saccharide moieties, which provides new information regarding the structure-cytotoxicity relationship of this family of steroidal glycosides. Intriguing results were achieved with respect to hecogenyl and 5 alpha-hydroxy-laxogenyl beta-chacotriosides, turning out to be the former very cytotoxic and the latter no cytotoxic at all. Importantly, the partially pivaloylated beta-D-glucosides of 5 alpha-hydroxy-laxogenin were the most potent cytotoxic compounds among all tested glycosides. This comprises the first report on acylated spirostanyl glucosides displaying significant cytotoxicity, and therefore, it opens up new opportunities toward the development of saponin analogues as anticancer agents. (C) 2012 Elsevier Ltd. All rights reserved.