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.
A new 3,4-seco-lupane derivative from Lasianthus gardneri / S. Dallavalle, L. Jayasinghe, B.M. Kumarihamy, L. Merlini, L. Musso, L. Scaglioni. - In: JOURNAL OF NATURAL PRODUCTS. - ISSN 0163-3864. - 67:5(2004 May), pp. 911-913.
A new 3,4-seco-lupane derivative from Lasianthus gardneri
S. DallavallePrimo
;L. Merlini;L. MussoPenultimo
;L. ScaglioniUltimo
2004
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.
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