Triterpenese of Isocoma Wrightii

Zalkow, L. H.; Ekpo, B.A.; Burke, N.I.

doi:10.1016/0031-9422(77)84039-9

Cited by 8 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This species produced a significant amount of resinous exudates from the twigs and leaves (1,2). Previous phytochemical investigations of Haplopappus species have revealed the presence of triterpenes (4,5), diterpenes (3,(6)(7)(8)(9)(10)(11)(12)(13)(14), flavonoids (5,(15)(16)(17)(18)(19)(20), coumarins (1,12,16,20,21), monoterpenes (22,23), and sesquiterpenes (22)(23)(24)(25)(26).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Volatile Constituents of Haplopappus greenei and Studies on the Antifungal Activity against Phytopathogens

Demırcı

Başer

Tabanca

et al. 2006

J. Agric. Food Chem.

View full text Add to dashboard Cite

Essential oil of Haplopappus greenei A. Gray was obtained by hydrodistillation of aerial parts, which were subsequently analyzed by gas chromatography and gas chromatography-mass spectrometry. Major components were identified as carvacrol (8.7%), beta-pinene (7.6%), trans-pinocarveol (6.2%), and caryophyllene oxide (5.8%), respectively. In total, 104 components representing 84.9% of the investigated essential oil were characterized. Furthermore, the essential oil was evaluated for antimalarial, antimicrobial, and antifungal activities. However, only antifungal activity was observed against the strawberry anthracnose-causing fungal plant pathogens Colletotrichum acutatum, Colletotrichum fragariae, and Colletotrichum gloeosporioides using the direct overlay bioautography assay. Major essential oil components were also evaluated for antifungal activity; the carvacrol standard demonstrated nonselective activity against the three Colletotrichum species and the other compounds were inactive.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of Volatile Constituents of Haplopappus greenei and Studies on the Antifungal Activity against Phytopathogens

Demırcı

Başer

Tabanca

et al. 2006

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…Thus, in addition to the above-mentioned benzofurans, the novel steroids 5a-androstane-3/3, 16a, 17a-triol (13) and stigmasta-8( 14), 22-dien-3/3-ol ( 14) were isolated, and more recently we have identified stigmasta-5, 22-dien-3/3-ol and stigmasta-8( 14)-en-e/3-ol (12). The triterpenes friedelin and friedelan-3a-ol were obtained from the hexane extract (15), and now we have found squalene and phytol (12). Furthermore, the hexane extract has yielded a complex hydrocarbon fraction, and after chromatography we have isolated and identified nonacosane, hentri-1Isocoma wrightii (Gray) Rydb.…”

mentioning

confidence: 92%

The Lower Terpenoids of Isocoma wrightii

Zalkow¹,

Harris²,

Burke³

1979

J. Nat. Prod.

View full text Add to dashboard Cite

“…Thus, in addition to the above mentioned benzofurans, the novel steroids 5a-androst ane-3/3,16 , 17a-triol (40) and stigmasta-8 ( 14), 22-dien-3/3-ol (41) were isolated, and we have now identified stigmasta-5.22dien-3/3-ol and stigmasta-8( 14)-en-3/3-ol. From the hexane extract, we have identified the triterpenes friedelin, friedelan-3a-ol (42), friedelan-3/3-ol. and squalene and the diterpene phytol.…”

mentioning

confidence: 99%