Pregnane glycosides from Caralluma Umbellata
1994; Elsevier BV; Volume: 35; Issue: 6 Linguagem: Inglês
10.1016/s0031-9422(00)86892-2
ISSN1873-3700
AutoresLee-Juian Lin, Long-Ze Lin, Roberto R. Gil, Geoffrey A. Cordelly, Mullangi Ramesh, Billa Srilatha, B. Madhava Reddy, Achanta Venkata Narasimha Appa Rao,
Tópico(s)Phytochemistry and Biological Activities
ResumoFrom Caralluma umbellata, two new pregnane glycosides, named carumbelloside I and II, were isolated and their structures and stereochemistry were elucidated by a combination of NMR techniques as 3-O-β-d-glucopyranosyl-(1→6)-β-d-glucopyranosyl-3β,14β-dihydroxypregn-5-en-20-one and 3-O-β-d-glucopyranosyl-3β,14β-dihydroxypregn-5-en-20-one. The ambiguous assignments were resolved through molecular modelling comparisons.
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