27-Nor-Δ4-dafachronic acid was prepared in nine steps and 14% overall yield by two sequential 2-carbon homologations from 20β-carboxyaldehyde-4-pregnen-3-one. Its activity was evaluated in vivo, where it rescued the Mig phenotype of daf-9(rh50) Caenorhabditis elegans mutants and restored their normal resistance to oxidative stress. 27-Nor-Δ4-dafachronic acid was also able to directly bind and activate DAF-12 in a transactivation cell-based luciferase reporter assay, although it was less active than the corresponding 25R-and 25S dafachronic acids. The binding mode of the 27-Nor steroid was studied by molecular dynamics using a homology model of the CeDAF-12 receptor.Fil: Samaja, Gisela Anabel. Consejo Nacional de Investigaciones Científicas ...
We describe the stereoselective transformation of diosgenin () to (25R)-Delta(4)-dafachronic acid ()...
The development and lifespan of C. elegans are controlled by the nuclear hormone receptor DAF-12, an...
The steroid hormone dafachronic acid (DA) regulates dauer formation and lifespan in Caenorhabditis e...
Dafachronic acids (DAs) are 3-keto cholestenoic acids bearing a carboxylic acid moiety at the end of...
A structure for the ligand binding domain (LBD) of the DAF-12 receptor from Caenorhabditis elegans w...
The DAF-12 receptor in nematodes and the Liver X Receptor (LXR) in mammals are structurally related ...
A new methodology to obtain C-25 and C-26 steroidal acids starting from pregnenolone is described. C...
Background: Liver X receptors (LXRs) are transcription factors activated by cholesterol metabolites ...
Liver X receptors (LXRs) are nuclear receptors that play central roles in the transcriptional contro...
Synthesis and testing of dafachronic acid A ( 1) and its derivatives 2 and 3 have revealed that 1, a...
SummaryIn response to environmental and dietary cues, the C. elegans orphan nuclear receptor, DAF-12...
Using a highly stereoselective Evans aldol reaction for the introduction of the stereogenic center a...
In response to environmental and dietary cues, the C. elegans orphan nuclear receptor, DAF-12, regul...
Broad aspects of Caenorhabditis elegans life history, including larval developmental timing, arrest ...
We report a stereoselective synthesis of the (25S)-cholestenoic-26-acids which are highly efficient ...
We describe the stereoselective transformation of diosgenin () to (25R)-Delta(4)-dafachronic acid ()...
The development and lifespan of C. elegans are controlled by the nuclear hormone receptor DAF-12, an...
The steroid hormone dafachronic acid (DA) regulates dauer formation and lifespan in Caenorhabditis e...
Dafachronic acids (DAs) are 3-keto cholestenoic acids bearing a carboxylic acid moiety at the end of...
A structure for the ligand binding domain (LBD) of the DAF-12 receptor from Caenorhabditis elegans w...
The DAF-12 receptor in nematodes and the Liver X Receptor (LXR) in mammals are structurally related ...
A new methodology to obtain C-25 and C-26 steroidal acids starting from pregnenolone is described. C...
Background: Liver X receptors (LXRs) are transcription factors activated by cholesterol metabolites ...
Liver X receptors (LXRs) are nuclear receptors that play central roles in the transcriptional contro...
Synthesis and testing of dafachronic acid A ( 1) and its derivatives 2 and 3 have revealed that 1, a...
SummaryIn response to environmental and dietary cues, the C. elegans orphan nuclear receptor, DAF-12...
Using a highly stereoselective Evans aldol reaction for the introduction of the stereogenic center a...
In response to environmental and dietary cues, the C. elegans orphan nuclear receptor, DAF-12, regul...
Broad aspects of Caenorhabditis elegans life history, including larval developmental timing, arrest ...
We report a stereoselective synthesis of the (25S)-cholestenoic-26-acids which are highly efficient ...
We describe the stereoselective transformation of diosgenin () to (25R)-Delta(4)-dafachronic acid ()...
The development and lifespan of C. elegans are controlled by the nuclear hormone receptor DAF-12, an...
The steroid hormone dafachronic acid (DA) regulates dauer formation and lifespan in Caenorhabditis e...