Constituents of fruit pulp of Maytenus salicifolia and complete 1D/2D NMR data of 3β-hydroxy-D:B-friedo-olean-5-ene

A mixture of long-chain hydrocarbons constituted by nonacosane (29C, 7.5%), hentriacontane (31C, 48.3%), and tritriacontane (33C, 30.1%), the ester 1′-acetyloxymethylpentacosa-20′-enyl 10-hydroxydecanoate (2), β-amyrin (3), friedelin (4), and lupeol (5), and 3β-hydroxy-D:B-friedo-olean-5-ene (6) wer...

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Bibliographic Details
Published in:Chemistry of natural compounds 2010-11, Vol.46 (5), p.686-691
Main Authors: Valladao, Frederico N, de Miranda, Roqueline R. S, de Oliveira, Gabriela S, Silva, Gracia D. F, Duarte, Lucienir P, Filho, Sidney A. V
Format: Article
Language:English
Subjects:
Analysis
Medicine
Nuclear magnetic resonance spectroscopy
Organic Chemistry
Pharmacy
Plant Sciences
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Summary:A mixture of long-chain hydrocarbons constituted by nonacosane (29C, 7.5%), hentriacontane (31C, 48.3%), and tritriacontane (33C, 30.1%), the ester 1′-acetyloxymethylpentacosa-20′-enyl 10-hydroxydecanoate (2), β-amyrin (3), friedelin (4), and lupeol (5), and 3β-hydroxy-D:B-friedo-olean-5-ene (6) were identified as constituents of fruits of Maytenus salicifolia Reissek (Celastraceae). The structural formula and the stereochemistry of compound 6 were established by the data obtained through ¹H and ¹³C NMR spectroscopy, including DEPT-135 and 2D (HMQC, HMBC, and NOESY) experiments. By analysis of the spectral data, it was possible to correct seven chemical shift assignments of compound 6, which were erroneous attributed and published in the scientific literature.
ISSN:0009-3130
1573-8388
DOI:10.1007/s10600-010-9716-0