Total synthesis of acetylenic carotenoids: 1. Synthesis of optically active 2-E-((4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enyl)-3-methyl-2-penten-4-yn-1-al, a C15-synthon

Add time:08/13/2019    Source:sciencedirect.com

The tide compound was synthesised in the optically active form in seven steps from (4R,6R)-actinol in 34% overall yield. The relative configuration within the C15-key intermediate acetylenic triol, 2-E-5-((1S,4R;,6R)-1,4-dihydroxy-2,2,6-trimethylcyclohexyl)-3-methyl-2- penten-4-yn-1-ol, was determined by X-ray crystallographic analysis.

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