596793-30-5Relevant articles and documents
Synthesis of Three-Dimensional (Di)Azatricyclododecene Scaffold and Its Application to Peptidomimetics
Katoh, Akira,Kouji, Hiroyuki,Morita, Taiki,Nakamura, Hiroyuki,Umedera, Kohei,Yamada, Kentaro,Yoshimori, Atsushi
supporting information, p. 11888 - 11894 (2021/07/06)
A novel sp3 carbon-rich tricyclic 3D scaffold-based peptide mimetic compound library was constructed to target protein-protein interactions. Tricyclic framework 7 was synthesized from 9-azabicyclo[3,3,1]nonan-3-one (11) via a gold(I)-catalyzed Conia-ene reaction. The electron-donating group on the pendant alkyne of cyclization precursor 12 b–e was the key to forming 6-endo-dig cyclized product 7 with complete regioselectivity. Using the synthetic strategy for regioselective construction of bridged tricyclic framework 7, a diazatricyclododecene 3D-scaffold 8 a, which enables the introduction of substituents into the scaffold to mimic amino acid side chains, was designed and synthesized. The peptide mimetics 21 a–u were synthesized via step-by-step installation of three substituents on diazatricyclododecene scaffold 8 a. Compounds 21 a–h were synthesized as α-helix peptide mimics of hydrophobic ZZxxZ and ZxxZZ sequences (Z=Leu or Phe) and subjected to cell-based assays: antiproliferative activity, HIF-1 transcriptional activity which is considered to affect cancer malignancy, and antiviral activity against rabies virus. Compound 21 a showed the strongest inhibitory activity of HIF-1 transcriptional activity (IC50=4.1±0.8 μM), whereas compounds 21 a–g showed antiviral activity with IC50 values of 4.2–12.4 μM, suggesting that the 3D-scaffold 8 a has potential as a versatile peptide mimic skeleton.
Biocatalytic preparation of chiral 3,4-dihydroxypyrrolidines
Rodríguez-Rodríguez, Jesús A.,Brieva, Rosario,Gotor, Vicente
scheme or table, p. 6789 - 6796 (2010/10/03)
Enzymatic acylations and alcoxycarbonylations of cis- and trans-3,4-dihydroxypyrrolidines and hydrolysis of their diacylated or dialcoxycarbonylated derivatives have been studied. High enantioselectivity is obtained using Candida antarctica lipase B as catalyst in the hydrolysis of the trans-diacetyl derivative, while for the desymmetrization of the cis-3,4-dihydroxypyrrolidines the best results are obtained in the acylation process catalyzed by C. antarctica lipase A.
Fluoropyrrolidine amides as dipeptidyl peptidase IV inhibitors
Caldwell, Charles G.,Chen, Ping,He, Jiafang,Parmee, Emma R.,Leiting, Barbara,Marsilio, Frank,Patel, Reshma A.,Wu, Joseph K.,Eiermann, George J.,Petrov, Aleksandr,He, Huaibing,Lyons, Kathryn A.,Thornberry, Nancy A.,Weber, Ann E.
, p. 1265 - 1268 (2007/10/03)
Amides derived from fluorinated pyrrolidines and 4-substituted cyclohexylglycine analogues have been prepared and evaluated as inhibitors of dipeptidyl dipeptidase IV (DP-IV). Analogues which incorporated (S)-3-fluoropyrrolidine showed good selectivity for DP-IV over quiescent cell proline dipeptidase (QPP). Compound 48 had good pharmacokinetic properties and was orally active in an oral glucose tolerance test in lean mice.