scholarly journals Light-responsive molecular containers

2017 ◽  
Vol 53 (34) ◽  
pp. 4635-4652 ◽  
Author(s):  
Alejandro Díaz-Moscoso ◽  
Pablo Ballester
Keyword(s):  
Small Molecules ◽  
Catch And Release

This review highlights relevant studies of light-controlled molecular containers able to catch and release small molecules.

scholarly journals An Amphiphilic Polymer-Supported Strategy Enables Chemical Transformations Under Anhydrous Conditions for DNA-Encoded Library Synthesis

2019 ◽  
Author(s):  
Yves Ruff ◽  
Roberto Martinez ◽  
Xavier Pellé ◽  
Pierre Nimsgern ◽  
Pascale Fille ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Amphiphilic Polymer ◽  
Aryl Halides ◽  
Chemical Transformations ◽  
Library Synthesis ◽  
Catch And Release ◽  
Dna Conjugates ◽  
Polymer Supported

Herein, we describe the development of a practical catch-and release methodology utilizing a cationic, amphiphilic PEG-based polymer to perform chemical transformations on immobilized DNA conjugates under anhydrous conditions. We demonstrate the usefulness of our APTAC (<u>a</u>mphiphilic <u>p</u>olymer-facilitated <u>t</u>ransformations under <u>a</u>nhydrous <u>c</u>onditions) approach by performing several challenging transformations on DNA-conjugated small molecules in pure organic solvents: the addition of a carbanion equivalent to a DNA-conjugated ketone in tetrahydrofuran, the synthesis of saturated heterocycles using the tin (Sn) amine protocol (SnAP) in dichloromethane and the dual-catalytic (Ir/Ni) metallaphotoredox decarboxylative cross-coupling of carboxylic acids to DNA-conjugated aryl halides in DMSO. In addition, we demonstrate the feasibility of the latter in multititer-plate format.

scholarly journals An Amphiphilic Polymer-Supported Strategy Enables Chemical Transformations Under Anhydrous Conditions for DNA-Encoded Library Synthesis

2019 ◽  
Author(s):  
Yves Ruff ◽  
Roberto Martinez ◽  
Xavier Pellé ◽  
Pierre Nimsgern ◽  
Maxim Ratnikov ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Amphiphilic Polymer ◽  
Aryl Halides ◽  
Chemical Transformations ◽  
Library Synthesis ◽  
Catch And Release ◽  
Dna Conjugates ◽  
Polymer Supported

Herein, we describe the development of a practical catch-and release methodology utilizing a cationic, amphiphilic PEG-based polymer to perform chemical transformations on immobilized DNA conjugates under anhydrous conditions. We demonstrate the usefulness of our APTAC (<u>a</u>mphiphilic <u>p</u>olymer-facilitated <u>t</u>ransformations under <u>a</u>nhydrous <u>c</u>onditions) approach by performing several challenging transformations on DNA-conjugated small molecules in pure organic solvents: the addition of a carbanion equivalent to a DNA-conjugated ketone in tetrahydrofuran, the synthesis of saturated heterocycles using the tin (Sn) amine protocol (SnAP) in dichloromethane and the dual-catalytic (Ir/Ni) metallaphotoredox decarboxylative cross-coupling of carboxylic acids to DNA-conjugated aryl halides in DMSO. In addition, we demonstrate the feasibility of the latter in multititer-plate format.

scholarly journals An Amphiphilic Polymer-Supported Strategy Enables Chemical Transformations Under Anhydrous Conditions for DNA-Encoded Library Synthesis

2019 ◽  
Author(s):  
Yves Ruff ◽  
Roberto Martinez ◽  
Xavier Pellé ◽  
Pierre Nimsgern ◽  
Maxim Ratnikov ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Amphiphilic Polymer ◽  
Aryl Halides ◽  
Chemical Transformations ◽  
Library Synthesis ◽  
Catch And Release ◽  
Dna Conjugates ◽  
Polymer Supported

Herein, we describe the development of a practical catch-and release methodology utilizing a cationic, amphiphilic PEG-based polymer to perform chemical transformations on immobilized DNA conjugates under anhydrous conditions. We demonstrate the usefulness of our APTAC (<u>a</u>mphiphilic <u>p</u>olymer-facilitated <u>t</u>ransformations under <u>a</u>nhydrous <u>c</u>onditions) approach by performing several challenging transformations on DNA-conjugated small molecules in pure organic solvents: the addition of a carbanion equivalent to a DNA-conjugated ketone in tetrahydrofuran, the synthesis of saturated heterocycles using the tin (Sn) amine protocol (SnAP) in dichloromethane and the dual-catalytic (Ir/Ni) metallaphotoredox decarboxylative cross-coupling of carboxylic acids to DNA-conjugated aryl halides in DMSO. In addition, we demonstrate the feasibility of the latter in multititer-plate format.

scholarly journals An Amphiphilic Polymer-Supported Strategy Enables Chemical Transformations Under Anhydrous Conditions for DNA-Encoded Library Synthesis

2019 ◽  
Author(s):  
Yves Ruff ◽  
Roberto Martinez ◽  
Xavier Pellé ◽  
Pierre Nimsgern ◽  
Pascale Fille ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Amphiphilic Polymer ◽  
Aryl Halides ◽  
Chemical Transformations ◽  
Library Synthesis ◽  
Catch And Release ◽  
Dna Conjugates ◽  
Polymer Supported

Herein, we describe the development of a practical catch-and release methodology utilizing a cationic, amphiphilic PEG-based polymer to perform chemical transformations on immobilized DNA conjugates under anhydrous conditions. We demonstrate the usefulness of our APTAC (<u>a</u>mphiphilic <u>p</u>olymer-facilitated <u>t</u>ransformations under <u>a</u>nhydrous <u>c</u>onditions) approach by performing several challenging transformations on DNA-conjugated small molecules in pure organic solvents: the addition of a carbanion equivalent to a DNA-conjugated ketone in tetrahydrofuran, the synthesis of saturated heterocycles using the tin (Sn) amine protocol (SnAP) in dichloromethane and the dual-catalytic (Ir/Ni) metallaphotoredox decarboxylative cross-coupling of carboxylic acids to DNA-conjugated aryl halides in DMSO. In addition, we demonstrate the feasibility of the latter in multititer-plate format.

scholarly journals An Amphiphilic Polymer-Supported Strategy Enables Chemical Transformations Under Anhydrous Conditions for DNA-Encoded Library Synthesis

2019 ◽  
Author(s):  
Yves Ruff ◽  
Roberto Martinez ◽  
Xavier Pellé ◽  
Pierre Nimsgern ◽  
Pascale Fille ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Amphiphilic Polymer ◽  
Aryl Halides ◽  
Chemical Transformations ◽  
Library Synthesis ◽  
Catch And Release ◽  
Dna Conjugates ◽  
Polymer Supported

Herein, we describe the development of a practical catch-and release methodology utilizing a cationic, amphiphilic PEG-based polymer to perform chemical transformations on immobilized DNA conjugates under anhydrous conditions. We demonstrate the usefulness of our APTAC (<u>a</u>mphiphilic <u>p</u>olymer-facilitated <u>t</u>ransformations under <u>a</u>nhydrous <u>c</u>onditions) approach by performing several challenging transformations on DNA-conjugated small molecules in pure organic solvents: the addition of a carbanion equivalent to a DNA-conjugated ketone in tetrahydrofuran, the synthesis of saturated heterocycles using the tin (Sn) amine protocol (SnAP) in dichloromethane and the dual-catalytic (Ir/Ni) metallaphotoredox decarboxylative cross-coupling of carboxylic acids to DNA-conjugated aryl halides in DMSO. In addition, we demonstrate the feasibility of the latter in multititer-plate format.

scholarly journals An Amphiphilic Polymer-Supported Strategy Enables Chemical Transformations Under Anhydrous Conditions for DNA-Encoded Library Synthesis

2019 ◽  
Author(s):  
Yves Ruff ◽  
Roberto Martinez ◽  
Xavier Pellé ◽  
Pierre Nimsgern ◽  
Maxim Ratnikov ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Amphiphilic Polymer ◽  
Aryl Halides ◽  
Chemical Transformations ◽  
Library Synthesis ◽  
Catch And Release ◽  
Dna Conjugates ◽  
Polymer Supported

Herein, we describe the development of a practical catch-and release methodology utilizing a cationic, amphiphilic PEG-based polymer to perform chemical transformations on immobilized DNA conjugates under anhydrous conditions. We demonstrate the usefulness of our ATAC (<u>a</u>mphiphilic polymers for <u>t</u>ransformations under <u>a</u>nhydrous <u>c</u>onditions) approach by performing several challenging transformations on DNA-conjugated small molecules in pure organic solvents: the addition of a carbanion equivalent to a DNA-conjugated ketone in tetrahydrofuran, the synthesis of saturated heterocycles using the tin (Sn) amine protocol (SnAP) in dichloromethane and the dual-catalytic (Ir/Ni) metallaphotoredox decarboxylative cross-coupling of carboxylic acids to DNA-conjugated aryl halides in DMSO. In addition, we demonstrate the feasibility of the latter in multititer-plate format.

Gap junctions in the prothoracic glands of the tobacco hornworm, Manduca sexta

1992 ◽  
Vol 50 (1) ◽  
pp. 706-707
Author(s):  
Ji-da Dai ◽  
M. Joseph Costello ◽  
Lawrence I. Gilbert
Keyword(s):  
Gap Junctions ◽  
Small Molecules ◽  
Manduca Sexta ◽  
Freeze Fracture ◽  
Cell Communication ◽  
Cellular Level ◽  
Thin Sections ◽  
Prothoracic Glands ◽  
Polyhydroxylated Steroids ◽  
Stimulation Of

Insect molting and metamorphosis are elicited by a class of polyhydroxylated steroids, ecdysteroids, that originate in the prothoracic glands (PGs). Prothoracicotropic hormone stimulation of steroidogenesis by the PGs at the cellular level involves both calcium and cAMP. Cell-to-cell communication mediated by gap junctions may play a key role in regulating signal transduction by controlling the transmission of small molecules and ions between adjacent cells. This is the first report of gap junctions in the PGs, the evidence obtained by means of SEM, thin sections and freeze-fracture replicas.

Fusion and Fission Processes in Exocytosis: Possible Roles for Synexin and Osmotic Lysis in the Two Events

1980 ◽  
Vol 38 ◽  
pp. 594-597
Author(s):  
H.B. Pollard ◽  
C.E. Creutz ◽  
C.J. Pazoles ◽  
J.H. Scott
Keyword(s):  
Small Molecules ◽  
Chromaffin Cells ◽  
Adrenal Glands ◽  
General Concept ◽  
Extracellular Calcium ◽  
Large Protein ◽  
Granule Membrane ◽  
Osmotic Lysis ◽  
Per Se ◽  
Chemical Evidence

Exocytosis is a general concept describing secretion of enzymes, hormones and transmitters that are otherwise sequestered in intracellular granules. Chemical evidence for this concept was first gathered from studies on chromaffin cells in perfused adrenal glands, in which it was found that granule contents, including both large protein and small molecules such as adrenaline and ATP, were released together while the granule membrane was retained in the cell. A number of exhaustive reviews of this early work have been published and are summarized in Reference 1. The critical experiments demonstrating the importance of extracellular calcium for exocytosis per se were also first performed in this system (2,3), further indicating the substantial service given by chromaffin cells to those interested in secretory phenomena over the years.

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