ChemInform Abstract: Lignans. Part 19. Total Synthesis of (-)-O-Dimethylsugiresinol (VI), Involving Asymmetric (4 + 2) Heterocycloaddition of a Styrene with a Benzylidenepyruvic Ester of an α-O-Silyl Derivative of (D)- Erythronolactone.
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