Solution-phase combinatorial synthesis of ureas using nitrophenylcarbamates
摘要:
Nitrophenycarbamates were reacted with various amines to yield ureas. A high throughput purification of these crude products was achieved by using polymer bound scavengers. (C) 1998 Elsevier Science Ltd. All rights reserved.
Inverted Binding of Non-natural Substrates in Strictosidine Synthase Leads to a Switch of Stereochemical Outcome in Enzyme-Catalyzed Pictet–Spengler Reactions
作者:Elisabeth Eger、Adam Simon、Mahima Sharma、Song Yang、Willem B. Breukelaar、Gideon Grogan、K. N. Houk、Wolfgang Kroutil
DOI:10.1021/jacs.9b08704
日期:2020.1.15
The Pictet–Spenglerreaction is a valuable route to 1,2,3,4-tetrahydro-β-carboline (THBC) and isoquinoline scaffolds found in many important pharmaceuticals. Strictosidine synthase (STR) catalyzes the Pictet–Spengler condensation of tryptamine and the aldehyde secologanin to give (S)-strictosidine as a key intermediate in indole alkaloid biosynthesis. STRs also accept short-chain aliphatic aldehydes
Pd/Cu Cocatalyzed Oxidative Tandem C–H Aminocarbonylation and Dehydrogenation of Tryptamines: Synthesis of Carbolinones
作者:Hui Han、Shang-Dong Yang、Ji-Bao Xia
DOI:10.1021/acs.joc.8b03266
日期:2019.3.15
The Pd/Cu cocatalyzed oxidative tandem C-H aminocarbonylation and dehydrogenation was developed, affording carbolinones with molecular oxygen as the terminal oxidant. Natural product strychnocarpine and its derivatives were prepared conveniently using this strategy.
Tryptamine derivatives as novel non-nucleosidic inhibitors against hepatitis B virus
A series of tryptamine derivatives were synthesized and evaluated for their anti-hepatitis B virus (HBV) activity and cytotoxicity in the HepG2.2.15 cell line. The preliminary SAR was discussed. Compounds 2e and 4a showed potent antiviral activity (IC(50) = 0.4 and < 1 mu M, respectively) and low cytotoxicity (CC(50) = 40.6 and > 25 mu M, respectively). (C) 2011 Elsevier Ltd. All rights reserved.