(4aR,5S,6S,6aR,9S,11aS,11bS,14R)-5,six,14-trihydroxy-4,4-dimethyl-
(4aR,5S,6S,6aR,9S,11aS,11bS,14R)-5,six,14-trihydroxy-4,4-dimethyl-8methylene-4,4a,five,six,9,ten,11,11a-octahydro-1H-6,11b-(epoxymethano)-6a,9methanocycloheptanaphthalene-1,7(8H)-dione (7) To a remedy of six (eight.0 mg, 0.02 mmol) inside a mixture of MeOH (two mL) and CH2Cl2 (0.5 mL) was added 5 HCl aqueous option (0.five mL)…