Methyl ~-piperonylhemisuccinate was resolved into both its (R)-(t) and (S)-(-Iantipodes by (-) and (+)-ephedrine, respectively. Calcium borohydride reduction of the (R)-(t) and (S)-(-)-hemiesters afforded the crystalline, o.ptically pure, (R)-(t) and (S)-t-k B-piperonyl-y-butyrolactones, respectivel
(R)-(+)-β-Veratryl-γ-butyrolactone. A new key-intermediate for the asymmetric synthesis of various lignans
✍ Scribed by Eric Brown; Alain Daugan
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 233 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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