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Molecular structures of four triterpenoids. X-ray crystallographic analysis of methyl 2α,3β,23α-triacetoxy-19α-hydroxyurs-12-en-28β-oate

✍ Scribed by Philip J. Cox; David G. Durham; Xiaojun Liu; R. Michael E. Richards


Book ID
105134249
Publisher
Springer
Year
1993
Tongue
English
Weight
347 KB
Volume
23
Category
Article
ISSN
1572-8854

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✍ L.A Tapondjou; F.N. Ngounou; D. Lontsi; B.L. Sondengam; J.D. Connolly 📂 Article 📅 1998 🏛 Elsevier Science 🌐 French ⚖ 495 KB

Pinacol rearrangement of the title group of compounds has been investigated and the structures of the adducts elucidated. Three different A-ring carbonylated compounds were obtained, two of which (2 and 4) remained with a six-member ring as in the starting material 1, and the third one (3) with a cy