Results 31 to 40 of about 38,785 (280)

Total synthesis of pyrrolo[2,3-c]quinoline alkaloid: trigonoine B

open access: yesBeilstein Journal of Organic Chemistry, 2021
The first total synthesis of the pyrrolo[2,3-c]quinoline alkaloid trigonoine B (1) was accomplished via a six-step sequence involving the construction of an N-substituted 4-aminopyrrolo[2,3-c]quinoline framework via electrocyclization of 2-(pyrrol-3-yl ...
Takashi Nishiyama   +9 more
doaj   +1 more source

3-Glucosylated 5-amino-1,2,4-oxadiazoles: synthesis and evaluation as glycogen phosphorylase inhibitors

open access: yesBeilstein Journal of Organic Chemistry, 2015
Glycogen phosporylase (GP) is a promising target for the control of glycaemia. The design of inhibitors binding at the catalytic site has been accomplished through various families of glucose-based derivatives such as oxadiazoles.
Marion Donnier-Maréchal   +6 more
doaj   +1 more source

Reactivity of Ortho-Palladated Phenol Derivatives with Unsaturated Molecules. Carbodiimide Insertion into a C−Pd Bond and/or O−H Phenol Addition to a Carbodiimide [PDF]

open access: yes, 2016
The first examples of the insertion of carbodiimides into a late-transition-metal−carbon bond and the unprecedented intramolecular addition of a phenol to a carbodiimide have allowed the synthesis of O,N and O,C six-membered ...
José Antonio Abad (2644684)   +3 more
core   +5 more sources

A new biocompatible delivery scaffold containing heparin and bone morphogenetic protein 2

open access: yesActa Pharmaceutica, 2016
Silicon-substituted calcium phosphate (Si-CaP) was developed in our laboratory as a biomaterial for delivery in bone tissue engineering. It was fabricated as a 3D-construct of scaffolds using chitosan-trisodium polyphosphate (TPP) cross-linked networks ...
Thanyaphoo Suphannee   +1 more
doaj   +1 more source

Effects of Diafenthiuron in Toxic Baits on Colonies of Leaf-cutting ants (Hymenoptera: Formicidae)

open access: yesSociobiology, 2017
Dianfenthiuron is a pre-insecticide that can be activated by photolysis, and may be a promising formicide. This study evaluated the effect of diafenthiuron after photolysis in colonies of Atta sexdens rubropilosa Forel, 1908. The experiment was conducted
Marcílio Souza Barbosa   +3 more
doaj   +1 more source

A PROMISING MODIFICATION OF THE CARBODIIMIDE METHOD USING AN INSOLUBLE CARBODIIMIDE [PDF]

open access: yesChemistry Letters, 1975
Abstract A modified polystyrene-divinylbenzene copolymer, in which ethylcarbodiimidomethyl groups were linked so as to be available as a condensing agent for peptide synthesis, were prepared. This polymer proved of great use in synthesizing some protected peptides without accompanying any troublesome by-product which would otherwise be ...
Hisashi Ito   +2 more
openaire   +1 more source

A greener synthetic protocol for the preparation of carbodiimide [PDF]

open access: yes, 2010
A new and facile preparation of symmetrical and unsymmetrical 1,3-diaryl and aryl-alkyl carbodiimides via a dehydrosulfurisation of their corresponding thioureas is described.
Ali, Abdur Rezzak   +2 more
core   +1 more source

fabianschnitter/Bistability-in-a-chemical-reaction-network: Matlab code to model carbodiimide-driven reaction cycles [PDF]

open access: yes, 2022
Matlab code which calculates the time evolution of all components of a carbodiimide-driven reaction ...
Fabian
core   +1 more source

Theoretical Study of the Quadrupolarity of Carbodiimide [PDF]

open access: yes, 2002
The quadrupolarity of carbodiimide, HN═C═NH, has been studied in comparison to carbon dioxide. Both heterocumulenes exhibit {- + -} quadrupolarity in all directions.
Glaser, Rainer   +2 more
core   +1 more source

Reaction of Pyrrolobenzothiazines with Schiff Bases and Carbodiimides: Approach to Angular 6/5/5/5-Tetracyclic Spiroheterocycles

open access: yesMolecules
1H-Pyrrole-2,3-diones, fused at [e]-side with a heterocycle, are suitable platforms for the synthesis of various angular polycyclic alkaloid-like spiroheterocycles.
Ekaterina A. Lystsova   +6 more
doaj   +1 more source

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