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On the synthesis of cephalosporin antibiotics (III). α, β-substituted butenolides and α,β-substituted γ-butyrolactones via Erlenmeyer condensations

✍ Scribed by H. S. Tan; D. N. Reinhoudt; H. C. Beyerman

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
383 KB
Volume
88
Category
Article
ISSN
0165-0513

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A synthesis of α-substituted trans-α, β-dibenzyl-γ-butyrolactones: diastereofacial differentiation in the electrophilic attack on the metal enolates of α, β-dibenzyl-γ-butyrolactones
✍ Moritani Yasunori; Ukita Tatsuzo; Nishitani Takashi; Seki Masahiko; Iwasaki Tame 📂 Article 📅 1990 🏛 Elsevier Science 🌐 French ⚖ 261 KB

Substituted trans-a, /3-dibenzyl-y-butyrolactones were synthesized in a diastereoselective manner by the reaction of the potassium enolates of a, &dibenzyl-ybutyrolactones with electrophiles. The method was applied to the synthesis of (k)trachelogenin.