Results 41 to 50 of about 3,968 (220)
Synthetic studies towards bottromycin
Beilstein Journal of Organic Chemistry, 2012 Thio-Ugi reactions are described as an excellent synthetic tool for the synthesis of sterically highly hindered endothiopeptides. S-Methylation and subsequent amidine formation can be carried out in an inter- as well as in an intramolecular fashion.
Stefanie Ackermann +4 more
doaj +1 more source
Stereodefined synthesis of cyclic amidines by domino 1,7-H shift and 6π electrocyclisation [PDF]
, 2023 Unsaturated N2-sulfonyl amidines are transformed into valuable N-heterocyclic products when heated with BF2OTf. Mechanism studies suggest a domino 1,7-H shift, activating a C–H bond, followed by electrocylisation that results in stereodefined cyclic ...
Boyer, Alistair +2 more
core +1 more source
Properties of Amidinated Glucagons [PDF]
European Journal of Biochemistry, 1980 Porcine glucagon has been reacted with a series of alkyl imidates. The ɛ‐amino group and both the α and ɛ‐amino groups were modified and the subsequent glucagon derivatives were purified by ion‐exchange chromatography and characterized. The modified glucagons were compared with native glucagon in their ability to activate hepatic adenylate cyclase and ...
D E, Wright, M, Rodbell
openaire +2 more sources
Quantitative determination of 0.05 % chlorhexidine solution by capillary electrophoresis
Zaporožskij Medicinskij Žurnal, 2019 The aim of the work was to estimate the quantitative content of 0.05 % chlorhexidine solution by capillary electrophoresis. Materials and methods.
A. M. Sampiiev +3 more
doaj +1 more source
, 1994 Cyclic amidines are prepared in 3 steps from an aromatic aldehyde, isobutyraldehyde, and urea.
Ten Hoeve, Wolter +3 more
core +1 more source
Three-Component Domino Acylation/Trifluoromethylation of Bicyclic Amidines
, 2023 We herein describe a three-component reaction involving bicyclic amidines such as DBN/DBU, acyl fluorides, and TMSCF3 for access to a novel class of N-acyl trifluoromethylated bicyclic aminals.
Ziwei Luo +7 more
core +1 more source
Efficient Copper Catalyzed Multi-component Synthesis of N-acyl amidines via Acyl Nitrenes
, 2019 Direct synthetic routes to amidines are desired, as they are widely present in many biologically active compounds and organometallic complexes. N-Acyl amidines in particular can be used as a starting material for the synthesis of heterocycles and have ...
Maxime A., Siegler +5 more
core +1 more source
Molecules, 2007 A series of novel benzimidazole derivatives 3-10 were synthesized. Benzimidazolyl-substituted acrylonitriles 3 and 4 underwent a photochemical dehydrocyclization reaction to give the corresponding mono- and dicyano-substituted benzimidazo[1,2-a ...
Marijana Hranjec, Grace Karminski-Zamola
doaj +1 more source
Continuous-Flow Synthesis of Thioureas, Enabled by Aqueous Polysulfide Solution
Molecules, 2021 We have developed the continuous-flow synthesis of thioureas in a multicomponent reaction starting from isocyanides, amidines, or amines and sulfur. The aqueous polysulfide solution enabled the application of sulfur under homogeneous and mild conditions.
András Gy. Németh +5 more
doaj +1 more source
Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials
Advanced Materials, EarlyView.A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella +3 more
wiley +1 more source