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15
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77956515355
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note
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A suspension of disrupted mycelium (2 ml) in sterilised water was added to each of twenty 1000 ml conical flasks, containing 200 ml of sterilised 2% potato dextrose broth (Difco). The flasks were shaken at 200 rpm for two weeks at 27 °C. The harvested filtrate was then extracted with Diaion HP20 resin (400 ml; Mitsubishi) which had previously been washed with HPLC grade methanol (Merck) and thoroughly conditioned with distilled water. The resin was removed, washed with distilled water (2 × 1000 ml) and eluted with HPLC grade methanol (2 × 1000 ml). The methanolic eluant was evaporated to dryness. Vacuum/liquid chromatography was used to purify the three products, 1, 2 and 3. Column eluant (4.2 g) was dissolved in chloroform (15 ml), to which was added silica gel (flash chromatography grade; BDH; 6 g) and evaporated. The slurry was applied to the top of a 60 mm diameter silica gel column. The column was eluted with 100 ml volumes of n-hexane/ethyl acetate mixtures, beginning with 100% n-hexane followed by sequential stepwise 10% increase in ethyl acetate, with a final elution of 10% methanol/ethyl acetate. On evaporating the column fractions, three were noticed to contain white needles within a yellow oil. Millilitre quantities of methanol, ethyl acetate, diethyl ether and chloroform were used to remove the oil and afford pure white needles of 1. Compound 2 was eluted from the silica column with 80% ethyl acetate/n-hexane, 3 in 90% ethyl acetate/n-hexane and 1 with 10% methanol/ethyl acetate.
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16
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77956500991
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note
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Marasmiellus troyanus was isolated from spore fall from a mature basidiocarp found on a dead liana, within the Rio Palenque Forest Reserve, Pichincha Province, Ecuador in 1986.
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18
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77956509754
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note
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-3. O,H(2)⋯O(7) (1/2 - x, 1 - y, z - 1/2) are 2.886(1), 2.2 (est.) and O, H(3)⋯O(2) (1/2 + x, 11/2 - y, 1 - z) 2.760(1), 2.0 (est.). CCDC 638780.
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19
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2542543582
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M. Stavri, K.T. Mathew, T. Gibson, R.T. Williamson, and S. Gibbons J. Nat. Prod. 67 2004 892
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J. Nat. Prod.
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Stavri, M.1
Mathew, K.T.2
Gibson, T.3
Williamson, R.T.4
Gibbons, S.5
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20
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77956522293
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note
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-1 = 3375, 2972, 2942, 1754, 1215, 1105, 1061 1048, 1012, 994, 692.
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-
-
-
21
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77956533105
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note
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-1 = 3474, 2935, 1736, 1706, 1226, 1120, 1063, 1007, 991.
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-
-
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22
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77956497398
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note
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-1 = 3244, 2948, 1541, 1457, 1073, 997.
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23
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0033022044
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M. Wichlacz, W.A. Ayer, L.S. Trifonov, P. Chakravarty, and D. Khasa Phytochemistry 51 1999 873
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Phytochemistry
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Wichlacz, M.1
Ayer, W.A.2
Trifonov, L.S.3
Chakravarty, P.4
Khasa, D.5
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