Heterocycles p. 2557 - 2560 (1999)
Update date:2022-08-10
Topics:
Ohta, Shunsaku
Kajiura, Takahiro
Murai, Hiromichi
Yamashita, Masayuki
Kawasaki, Ikuo
Novel tetracyclic lactone (5a), 9-ethoxycarbonyl-10(10aH)-oxo- 5,6,7,8,8a,9-hexahydro-9,10a-anthracenecarbolactone, was obtained in 34.8% yield by oxidative cyclization of diethyl trans-2-benzoylcyclohexylmalonate (4a) with manganese(III) acetate dihydrate in the presence of sodium acetate in acetic acid.
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(2014)
