2Q70:
reference: Benzopyrans as selective estrogen receptor beta agonists (SERBAs). Part 3: Synthesis of cyclopentanone and cyclohexanone intermediates for C-ring modification., Richardson TI, Dodge JA, Durst GL, Pfeifer LA, Shah J, Wang Y, Durbin JD, Krishnan V, Norman BH, Bioorg Med Chem Lett. 2007 Sep 1;17(17):4824-8. Epub 2007 Jun 20. PMID: 17614275

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