57149-19-6Relevant articles and documents
Asymmetric catalytic alkynylation of thiazolones and azlactones for synthesis of quaternary α-amino acid precursors
Meng, Beibei,Shi, Qian,Meng, Yuan,Chen, Jie,Cao, Weiguo,Wu, Xiaoyu
supporting information, p. 5087 - 5092 (2021/06/21)
Asymmetric alkynylation of thiazolones and azlactones with alkynylbenziodoxolones as the electrophilic alkyne source catalyzed by thiourea phosphonium salt is described. By using thiazolones as nucleophiles, the desired alkyne functionalized thiazolones were obtained in 55-89% yields with 31-86% ee. Azlactones gave the desired products in comparable yields with lower enantioselectivities. Ring-opening of the alkynylation products led to α,α-disubstituted α-amino acid derivatives efficiently without loss of enantioselectivity.
5′-Phenyl-3′H-spiro[indoline-3,2′-[1,3,4]thiadiazol]-2-one inhibitors of ADAMTS-5 (Aggrecanase-2)
Bursavich, Matthew G.,Gilbert, Adam M.,Lombardi, Sabrina,Georgiadis, Katy E.,Reifenberg, Erica,Flannery, Carl R.,Morris, Elisabeth A.
, p. 5630 - 5633 (2008/03/14)
5′-Phenyl-3′H-spiro[indoline-3,2′-[1,3,4]thiadiazol]-2-one inhibitors of ADAMTS-5 (Aggrecanase-2) have been prepared via commercially available starting materials. Selected compounds 23, 33-35 show sub-micromolar ADAMTS-5 potency and strong SAR trends with selectivity over the related metalloproteases ADAMTS-4 (Aggrecanase-1), MMP12, and MMP13. This series of compounds represents progress toward a selective ADAMTS-5 inhibitor as a disease modifying osteoarthritis drug.
