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New friedelane triterpenes from Lepidobotrys staudtii

✍ Scribed by Pierre Tane; Apollinaire Tsopmo; David Ngnokam; J. Foyere Ayafor; Olov Sterner


Book ID
103399460
Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
303 KB
Volume
52
Category
Article
ISSN
0040-4020

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Three new triterpenoids, lobatanhydride (1), 3a,25-dihydroxyfriedelan-2-one (2) and 1b,25dihydroxyfriedelan-3-one (3), were isolated from Crossopetalum lobatum Lundell. In addition, four known friedelane triterpenes, friedelin (4), 2a-hydroxy-3-oxofriedelan-30-oic acid (5), 28-hydroxyfriedelane-1,3-

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## Abstract From the stem and bark of the mangrove plant __Hibiscus tiliaceus__, a new friedelane‐type triterpene named 27‐oic‐3‐oxo‐28‐friedelanoic acid (1) together with eight known triterpenoids involving five friedelane‐type derivatives was isolated. The structure of 1 was determined by extensi