The macrocycle of leinamycin imparts hydrolytic stability to the thiol-sensing 1,2-dithiolan-3-one 1-oxide unit of the natural product
作者:Santhosh Sivaramakrishnan、Leonid Breydo、Daekyu Sun、Kent S. Gates
DOI:10.1016/j.bmcl.2012.04.003
日期:2012.6
Reaction of cellular thiols with the 1,2-dithiolan-3-one 1-oxide moiety of leinamycin triggers the generation of DNA-damaging reactive intermediates. Studies with small, synthetic analogues of leinamycin reveal that the macrocyclic portion of the natural product imparts remarkable hydrolytic stability to the 1,2-dithiolan-3-one 1-oxide heterocycle without substantially compromising its thiol-sensing
Pattenden, Gerald; Shuker, Anthony J., Journal of the Chemical Society. Perkin transactions I, 1992, # 10, p. 1215 - 1222
作者:Pattenden, Gerald、Shuker, Anthony J.
DOI:——
日期:——
Possible chemical mechanisms underlying the antitumor activity of S-deoxyleinamycin
作者:Santhosh Sivaramakrishnan、Kent S. Gates
DOI:10.1016/j.bmcl.2007.11.092
日期:2008.5
Though less potent than the parent natural product leinamycin, S-deoxyleinamycin displays activity against human cancer cell lines that is comparable to many clinically used agents. The results reported here suggest that the 1,2-dithiolan- 3-one heterocycle found in S-deoxyleinamycin reacts with thiols to generate a persulfide intermediate (RSS(-)) that could deliver biologically active polysulfides, hydrogen sulfide, and reactive oxygen species (O(2)(center dot-), H(2)O(2), and HO(center dot)) to the interior of cells. (c) 2007 Elsevier Ltd. All rights reserved.