641617-22-3Relevant academic research and scientific papers
MACROCYCLIC BROAD SPECTRUM ANTIBIOTICS
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Paragraph 00302, (2020/12/11)
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of bacterial type 1 signal peptidases SpsB and/or LepB, an essential protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.
Modular, gold-catalyzed approach to the synthesis of lead-like piperazine scaffolds
James, Thomas,Simpson, Iain,Grant, J. Andrew,Sridharan, Visuvanathar,Nelson, Adam
supporting information, p. 6094 - 6097 (2014/01/06)
Ring-opening of cyclic sulfamidates with propargylic sulfonamides yielded substrates for a gold-catalyzed cyclization to yield tetrahydropyrazines. Manipulation of the tetrahydropyrazines, by reduction or using multicomponent reactions, yielded piperazine scaffolds in which substitution of the carbon atoms was varied. Such scaffolds may have value in the synthesis of novel screening compounds with lead-like molecular properties.
D-fructose-6-phosphate aldolase-catalyzed one-pot synthesis of iminocyclitols
Sugiyama, Masakazu,Hong, Zhangyong,Liang, Pi-Hui,Dean, Stephen M.,Whalen, Lisa J.,Greenberg, William A.,Wong, Chi-Huey
, p. 14811 - 14817 (2008/09/19)
A one-pot chemoenzymatic method for the synthesis of a variety of new iminocyclitols from readily available, non-phosphorylated donor substrates has been developed. The method utilizes the recently discovered fructose-6-phosphate aldolase (FSA), which is functionally distinct from known aldolases in its tolerance of different donor substrates as well as acceptor substrates. Kinetic studies were performed with dihydroxyacetone (DHA), the presumed endogenous substrate for FSA, as well as hydroxy acetone (HA) and 1-hydroxy-2-butanone (HB) as donor substrates, in each case using glyceraldehyde-3-phosphate as acceptor substrate. Remarkably, FSA used the three donor substrates with equal efficiency, with kcat/KM-values of 33, 75, and 20 M -1 s-1, respectively. This level of donor substrate tolerance is unprecedented for an aldolase. Furthermore, DHA, HA, and HB were accepted as donors in FSA-catalyzed aldol reactions with a variety of azido- and Cbz-amino aldehyde acceptors. The broad substrate tolerance of FSA and the ability to circumvent the need for phosphorylated substrates allowed for one-pot synthesis of a number of known and novel iminocyclitols in good yields, and in a very concise fashion. New iminocyclitols were assayed as inhibitors against a panel of glycosidases. Compounds 15 and 16 were specific α-mannosidase inhibitors, and 24 and 26 were potent and selective inhibitors of β-N-acetylglucosaminidases in the submicromolar range. Facile access to these compounds makes them attractive core structures for further inhibitor optimization.
