197965-89-2Relevant articles and documents
Silver-Catalyzed C(sp3)-H Sulfonylation for the Synthesis of Benzyl Sulfones Using Toluene Derivatives and α-Amino Acid Sulfonamides
Kanyiva, Kyalo Stephen,Shibata, Takanori,Uchida, Kanako
, p. 1377 - 1384 (2021/06/06)
We describe a simple and practical protocol for the synthesis of benzyl sulfones using readily available toluene derivatives and α-amino acid sulfonamides. The reaction proceeds to afford a broad range of benzyl sulfones in moderate to high yields under silver catalysis. The mechanism possibly involves a Minisci-type formation of α-aminoalkyl radical, homolytic cleavage of a N-S bond to generate a sulfonyl radical, and coupling of sulfonyl radical with a benzyl radical formed via hydrogen abstraction by sulfate anion radical. The practicality of the present reaction is demonstrated by a gram-scale synthesis and one-step synthesis of anticancer-active compound. The mechanism studies are conducted using radical scavengers and deuterated toluene.
PROCESS FOR MAKING N-SULFONATED-AMINO ACID DERIVATIVES
-
Page/Page column 34, (2008/06/13)
This invention relates to a process for preparing optically active α -amino acid substrates which are used to make potent lethal factor (LF) inhibitors for the treatment of anthrax. This invention further relates to a process for synthesis of potent LF-inhibitors for the treatment of anthrax. Specifically, the invention concerns a novel, high-yielding and highly enantioselective asymmetric hydrogenation reaction of a tetrasubstituted ene-sulfonamide acid or ester.
Discovery of CGS 27023A, a non, peptidic, potent, and orally active stromelysin inhibitor that blocks cartilage degradation in rabbits
MacPherson, Lawrence J.,Bayburt, Erol K.,Capparelli, Michael P.,Carroll, Brian J.,Goldstein, Robert,Justice, Michael R.,Zhu, Lijuan,Hu, Shou-Ih,Melton, Richard A.,Fryer, Lynn,Goldberg, Ron L.,Doughty, John R.,Spirito, Salvatore,Blancuzzi, Vincent,Wilson, Doug,O'Byrne, Elizabeth M.,Ganu, Vishwas,Parker, David T.
, p. 2525 - 2532 (2007/10/03)
Structure-activity relationships of a lead hydroxamic acid inhibitor of recombinant human stromelysin were systematically defined by taking advantage of a concise synthesis that allowed diverse functionality to be explored at each position in a template. An ex vivo rat model and an in vivo rabbit model of stromelysin-induced cartilage degradation were used to further optimize these analogs for oral activity and duration of action. The culmination of these modifications resulted in CGS 27023A, a potent, orally active stromelysin inhibitor that blocks the erosion of cartilage matrix.