544464-86-0Relevant academic research and scientific papers
Enantioselective copper-catalyzed remote c(sp3)-h alkynylation of linear primary sulfonamides
Wang, Cheng-Yu,Qin, Zi-Yang,Huang, Yu-Ling,Hou, Yi-Ming,Jin, Ruo-Xing,Li, Chao,Wang, Xi-Sheng
, p. 4006 - 4009 (2020)
The highly efficient copper-catalyzed enantioselective alkynylation of the remote C(sp3)-H bond on linear primary sulfonamides is presented here using a radical relay strategy. The chiral box-copper complex, which is used to recapture the in-situ-generated alkyl radical via a 1,5-HAT strategy, is the key to success, affording the chiral alkynes after a following reductive elimination. A general substrate scope, mild conditions, and excellent regio- and enantioselective control are demonstrated in this method.
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.
