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Acylated manoyl oxide diterpenes of Stemodia trifoliata
Author(s) -
da Silva Wildson Max B.,
Silveira Edilberto R.,
Pessoa Otilia Deusdênia L.
Publication year - 2010
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2597
Subject(s) - chemistry , two dimensional nuclear magnetic resonance spectroscopy , heteronuclear single quantum coherence spectroscopy , labdane , diterpene , stereochemistry , betulinic acid , terpene , biology , genetics
Two new labdane diterpenes, 6α‐malonyloxy‐ethyl ester manoyl oxide and bis‐6α‐dioxymanoylmalonate, together with the known 6α‐hydroxymanoyl oxide, 6α‐malonyloxymaloyl oxide and betulinic acid were isolated from leaves of Stemodia trifoliata . Their structures were elucidated by spectroscopic studies (IR and HR‐ESI‐MS), including an extensive NMR (COSY, HSQC, HMBC and NOESY) analysis. Copyright © 2010 John Wiley & Sons, Ltd.

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