| 摘要 |
A process for producing vitamin A esters, vitamin A aldehyde and vitamin A acid esters from esters of 3,7-dimethyl-9-(1-hydroxy-2,2,6-trimethylcyclohexyl)-nona-2,4,6-trien- 8-yn-1-ol and 3,7-dimethyl-9-(1-hydroxy-2,2,6-trimethylcyclohexyl)-nona-2,4,6-trien- 8-ynoic acid including intermediates in this process.
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