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- Title
Terpenoid constituents and antifungal activity of Aglaia forbesii seed against phytopathogens.
- Authors
Joycharat, Nantiya; Plodpai, Patimaporn; Panthong, Kanda; Yingyongnarongkul, Boon-ek; Voravuthikunchai, Supayang Piyawan
- Abstract
Two new trisnortriterpenoids possessing a γ-lactone ring linked to the D-ring of a 3,4-secodammarane skeleton in a 20R configuration, named isoeichlerialactone (1) and methyl isoeichlerialactone (2), were isolated from the seed of Aglaia forbesii, along with the three dammarane triterpenes, isocabralealactone (3), isoeichlerianic acid (4), and aglinin A (5), the sesquiterpene spathulenol (6), and the widespread sterols β-sitosterol and stigmasterol. Their structures were established based on detailed spectroscopic analysis. Antifungal activity of A. forbesii seed against three phytopathogens, Phytophthora botryosa, P. palmivora, and Rigidoporus microporus, was carried out using the mycelium inhibition test and broth microdilution technique. Superior activity was exhibited by hexane and dichloromethane fractions containing the compounds 1, 4, and 5 as the main components. Subsequent antiphytopathogenic fungi tests proved that compounds 1, 4, and 5 possessed good antifungal activity.
- Subjects
TERPENES; ANTIFUNGAL agents; MELIACEAE; PHYTOPATHOGENIC microorganisms; LACTONES; PHYTOPHTHORA; RIGIDOPORUS; DICHLOROMETHANE
- Publication
Canadian Journal of Chemistry, 2010, Vol 88, Issue 9, p937
- ISSN
0008-4042
- Publication type
Article
- DOI
10.1139/V10-085