1. A new 3,4-seco-lupane derivative from Lasianthus gardneri.
- Author
-
Dallavalle S, Jayasinghe L, Kumarihamy BM, Merlini L, Musso L, and Scaglioni L
- Subjects
- Glucosides chemistry, Glucosides isolation & purification, Molecular Structure, Nuclear Magnetic Resonance, Biomolecular, Pentacyclic Triterpenes, Plant Stems chemistry, Sitosterols chemistry, Sitosterols isolation & purification, Sri Lanka, Stigmasterol chemistry, Stigmasterol isolation & purification, Triterpenes chemical synthesis, Triterpenes chemistry, Ursolic Acid, Rubiaceae chemistry, Stigmasterol analogs & derivatives, Triterpenes isolation & purification
- Abstract
A new seco-ring A lupane triterpene derivative (1), along with lupenone, lupeol, beta-sitosterol, ursolic acid, and stigmasterol 3-O-beta-d-glucoside, were isolated from a methanol extract of mature stems of Lasianthus gardneri, a shrub from the family Rubiaceae growing in Sri Lanka. The structure and stereochemistry of the new compound were determined using a combination of (13)C and (1)H homo- and heteronuclear 2D NMR experiments and from mass spectral data. The structure of 1 was confirmed by partial synthesis from lupeol.
- Published
- 2004
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