120251-76-5
ethyl (+/-)-2-ethoxycarbonyl-5-ethynyl-5-hydroxycyclohex-1-enylacetate
→
~88%
104292-84-4
(+/-)-2-carboxy-5-ethynyl-5-hydroxycyclohex-1-enylacetic acid
77312-60-8
9-acetyl-6,9-dihydroxy-8,10-dihydro-7H-tetracene-5,12-dione