C20-nor-Abietane and Three Abietane Diterpenoids from Plectranthus mutabilis Leaves as P-Glycoprotein Modulators [PDF]
ACS Medicinal Chemistry Letters, 2022 In this study, a bioguided fractionation of Plectranthus mutabilis extract was performed by chromatographic methods. It yielded one new nor-abietane diterpene, mutabilol (1), and three known abietanes, coleon-U-quinone (2), 8α,9α-epoxycoleon-U-quinone (3), and coleon U (4).
Epole N. Ntungwe +8 more
openaire +6 more sources
New Abietane and Seco-abietane Diterpenes from the Roots of Taiwania cryptomerioides
Chemical and Pharmaceutical Bulletin, 2005 Four new diterpenes, 3-oxosaprorthoquinone (1), 3-oxomicrostegiol (2), 3-oxoisotaxodione (3), and taiwaninal (4), together with two known compounds, 3-oxosapriparaquinone (5) and 6-dehydrohinokiol (6), were isolated from the roots of Taiwania cryptomerioides. The structures of 1-4 were principle elucidated based on spectral evidence.
Chiou-Feng, Chyu +2 more
openaire +3 more sources
Nicholas Reactions in the Construction of Cyclohepta[de]naphthalenes and Cyclohepta[de]naphthalenones. The Total Synthesis of Microstegiol [PDF]
, 2010 The application of the Nicholas reaction chemistry of 2,7-dioxygenated naphthalenes in the synthesis of cyclohepta[de]napthalenes and in the synthesis of (±)-microstegiol (1) is presented.
Green, James R., TAJ, RAFIQ
core +2 more sources
Micro infrared spectroscopy discrimination capability of compounds in complex matrices of thin layers in real sample coatings from artworks [PDF]
, 2015 The presence of coating on manufactures either to protect them from the environment, or to give them specific properties—as well as simply to change their aspect—has been shown to be a constant practise throughout history.
Beltran Sanchidrian, Victòria +3 more
core +2 more sources
Cyclohepta[de]naphthalenes and the Rearranged Abietane Framework of Microstegiol via Nicholas Reaction Chemistry [PDF]
, 2009 Nicholas reactions on 2,7-dioxygenated naphthalenes give C-1 monosubstitution and C-1/C-8 disubstitution in most cases. From gamma-carbonyl cation monocondensation product 3b or alkyne-unsubstituted dicondensation product 4a, cyclohepta[de]naphthalenes ...
Abhayawardhana, Anusha +2 more
core +3 more sources
Chemical composition and screening of the antimicrobial and antioxidative activity of extracts of Stachys species [PDF]
, 2010 GC and GC/MS analyses of the diethyl ether and ethyl acetate extracts obtained from the aerial parts of Stachys germanica subsp. heldreichii (Boiss) Hayek, Stachys iva Griseb., Stachys plumosa Griseb.
GORDANA S. STOJANOVIĆ +4 more
core +1 more source
Oil, Rich in Abietane Diterpenes
Natural Product Communications, 2013 Volatile oil extracted from the leaves of Pogostemon hirsutus Benth., a rare species from Anamalai hills of the Western Ghats of Tamil Nadu, India was analyzed by GC-FID and GC-MS. Fifty-four compounds amounting to 90.8% of the oil were identified.
Ramar Murugan +3 more
doaj +1 more source
Terpenoid compositions and botanical origins of Late Cretaceous and Miocene amber from China.
PLoS ONE, 2014 The terpenoid compositions of the Late Cretaceous Xixia amber from Central China and the middle Miocene Zhangpu amber from Southeast China were analyzed by gas chromatography-mass spectrometry (GC-MS) to elucidate their botanical origins. The Xixia amber
Gongle Shi +4 more
doaj +1 more source
(+)-Dehydroabietic Acid, an Abietane-Type Diterpene, Inhibits Staphylococcus aureus Biofilms in Vitro [PDF]
, 2013 Peer ...
Fallarero, Adyary +6 more
core +1 more source
Euphorbia characias: Phytochemistry and Biological Activities [PDF]
, 2021 The aim of this review is to summarize all the compounds identified and characterized from Euphorbia characias, along with the biological activities reported for this plant.
Delogu, Giovanna Lucia +5 more
core +1 more source