We synthesized new vitamin K2 analogues with ω-terminal modifications of the side chain and evaluated their selective differentiation of neuronalprogenitorcells into neurons in vitro. The result of the assay showed that the menaquinone-3 analogue modified with the m-methylphenyl group had the most potent activity, which was twice as great as the control. This finding indicated that it is possible
Synthesis of Novel Vitamin K<sub>2</sub> Analogues with Modification at the ω-Terminal Position and Their Biological Evaluation as Potent Steroid and Xenobiotic Receptor (SXR) Agonists
Vitamin K-2 is a ligand for a nuclear receptor, steroid and xenobiotic receptor (SXR), that induces the gene expressions of CYP3A4. We synthesized vitamin K-2 analogues with hydroxyl or phenyl groups at the omega-terminal of the side chain. The up-regulation of SXR-mediated transcription of the target gene by the analogues was dependent on the length of the side chain and the hydrophobicity of the omega-terminal residues. Phenyl analogue menaquinone-3 was as active as the known SXR ligand rifampicin.
Exploration of GGTase-I substrate requirements. Part 1: Synthesis and biochemical evaluation of novel aryl-modified geranylgeranyl diphosphate analogs
作者:Kayla J. Temple、Elia N. Wright、Carol A. Fierke、Richard A. Gibbs
DOI:10.1016/j.bmcl.2016.06.034
日期:2016.8
Protein geranylgeranylation is a type of post-translational modification that aids in the localization of proteins to the plasma member where they elicit cellular signals. To better understand the isoprenoid requirements of GGTase-I, a series of aryl-modified geranylgeranyl diphosphate analogs were synthesized and screened against mammalian GGTase-I. Of our seven-member library of compounds, six analogs