ABSTRACT
Objective: To study the secondary metabolites of endophytic fungus Aspergillus fumigatus from Euphorbia royleana. Methods: The fermentation liquor of the fungal strain A. fumigatus was isolated and purified using various chromatographic methods. The structures of the compounds were identified by spectroscopic analysis. Results: Three compounds were isolated and their structures were identified as (R)-2-propylhexyl-2H-1,2,3-triazole-4-carboxylate (1), decumbenone A (2), and (+)-cyclopenol (3). Conclusion: Compound 1 is a new compound isolated from this fungus, which is identified as aspergillus triazolate A.
ABSTRACT
Objective: To study the chemical constituents in the aerial parts of Euphorbia royleana. Methods: The constituents were isolated and purified by chromatographic of silica gel, Sephadex LH-20, RP18, and MCI columns, and their structures were elucidated by spectroscopic analyses. Results: Twelve compounds were isolated from the 70% acetone extracts in the aerial parts of E. royleana and their structures were identified as (6S, 9R)-roseoside (1), 13-carboxyblumenol C 9-O-β-glucoside (2), 3, 3'-dimethylellagic acid-4-O-β-D-glucopyranoside (3), cycloart-23-ene-3β, 25-diol (4), 23(E)-25-methoxycycloart-23-en-3β-ol (5), α-amyrin (6), triptohypol F (7), 9(11), 12-dieneoleana-3β-ol (8), friedelane-3β, 29-diol (9), D:A-friedoolean-29-ol-3-one (10), dischidiol (11), and lupeol (12). Conclusion: Compounds 1, 2, 7-11 are obtained from the plants in Euphorbia L. for the first time and compounds 3-5 and 12 are isolated from this plant for the first time.