Preparation of aromatic farnesol analogues via a Cu(I)-mediated Grignard coupling of THP ethers
作者:Mark F. Mechelke、David F. Wiemer
DOI:10.1016/s0040-4039(97)10610-4
日期:1998.2
A Cu(I)-mediated reaction of aromatic Grignard reagents with allylic tetrahydropyranyl ethers results in formation of the coupled products in good yields. This methodology allows facile synthetic manipulation of compounds with two reactive allylic positions. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthetic Small Molecules Derived from Natural Vitamin K Homologues that Induce Selective Neuronal Differentiation of Neuronal Progenitor Cells
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 Farnesol Analogues through Cu(I)-Mediated Displacements of Allylic THP Ethers by Grignard Reagents
作者:Mark F. Mechelke、David F. Wiemer
DOI:10.1021/jo990161p
日期:1999.6.1
The synthesis of a family of farnesol analogues, incorporating aromatic rings, has been achieved in high yields through the development of a regioselective coupling of allylic tetrahydropyranyl ethers with organometallic reagents. The allylic THP group is displaced readily by Grignardreagents in the presence of Cu(I) halides but is stable in the absence of added copper. Thus, an allylic THP group