Synthesis and in vitro evaluation of ( R ), ( S ) and ( R / S )-2-hexyne-1,4-diol, a natural product produced by fungus Clitocybe catinus , and related analogs as potential anticancer agents
作者:Iza Mirela R.G. Princival、Jeiely G. Ferreira、Teresinha G. Silva、Jaciana S. Aguiar、Jefferson L. Princival
DOI:10.1016/j.bmcl.2016.04.060
日期:2016.6
for natural products and related analogs as potential anticancer agents has seen a significant growth worldwide. Since small sized propargylic diols can be found in nature and chemically synthesized, their evaluation against cancer cells has been of great interest, being a topic of relevance to be investigated. For this purpose, a scalable approach aiming at the synthesis of several propargylic diols
CeCl3-mediated addition of acetylenic bis-lithium salts to aldehydes and ketones: An efficient route to bis-substituted alkyne diols
作者:Jefferson Luiz Princival、Jeiely Gomes Ferreira
DOI:10.1016/j.tetlet.2017.07.094
日期:2017.9
An efficient, chemoselective protocol to access propargylic diols via a CeCl3-mediated addition reaction is reported. Propargylic alcohols were transformed into the corresponding acetylenic bis-lithium salt intermediates, which react with aldehydes and ketones in the presence of dry CeCl3 to furnish the corresponding bis-substituted alkyne diols. This protocol does not involve protection-deprotection