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. 2012 Aug 13;17(8):9716-27.
doi: 10.3390/molecules17089716.

Diterpenoids from the buds of Pinus banksiana Lamb

Patricia Georges  1 , Jean Legault, Serge Lavoie, Carole Grenon, André Pichette
Affiliations

Diterpenoids from the buds of Pinus banksiana Lamb

Patricia Georges et al. Molecules. .

Abstract

Three new diterpenoids, namely 7α-hydroxyabieta-8,11,13,15-tetraen-18-oic acid, 7β,15,18-trihydroxyabieta-8,11,13-triene, 13,15-dihydroxypodocarpa-8,11,13-triene, and 12 other known compounds were isolated from buds of Pinus banksiana Lamb. All these compounds, except for 7-oxodehydroabietinol, were isolated for the first time from this plant. Their structures were elucidated by detailed spectroscopic studies and comparison with published data. All isolated compounds were tested for cytotoxic and antibacterial activities. Overall, two compounds, 7-oxodehydroabietinol and 18-nor-4,15-dihydroxyabieta-8,11,13-trien-7-one, showed moderate cytotoxicity against a human lung carcinoma cell line.

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Figures

Figure 1
Figure 1
Diterpenes from buds of Pinus banksiana.
Figure 2
Figure 2
Key 1H–1H COSY (▬) and HMBC (Hformula imageC) correlations of compounds 1–3.
Figure 3
Figure 3
Key NOESY (formula image) correlations of compound 2.
See this image and copyright information in PMC

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