Monatshefte fur Chemie p. 847 - 851 (1990)
Update date:2022-08-02
Topics:
Spreitzer, Helmut
The diketone 1 undergoes base induced ring opening to the δ-ketoacid 2a.Subsequent stereoselective reduction of the carbonyl-group affords the corresponding hydroxyacid 4a and condensation leads to the bicyclic lactone 5 which can be reduced to the title
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