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P. Chomcheon et al. / Phytochemistry 70 (2009) 121–127
of MTPA), 1.94 (1H, m, H-20a), 1.60 (1H, m, H-20b), 1.25 (4H, m, over-
lapping signals of H-30 and H-40), 1.23 (2H, m, H-40), 1.23 (2H, m, H-
50), 1.23 (2H, m, H-60), 0.86 (3H, t, J = 6.9, H-70); ESI–TOF–MS: m/z
955.3620 [M + H]+(calcd. for C48H57F6O13, 955.3703). (R)-MTPA es-
ter (Data for half of a molecule); 1H NMR (CDCl3, 400 MHz) d 7.51
(2H, m, aromatic signals of MTPA), 7.44 (3H, m, aromatic signals of
MTPA), 5.95 (1H, s, H-5), 5.72 (1H, t, J = 6.1, H-10), 4.52 (2H, s, H-
100), 3.69 (3H, s, 4-OMe), 3.58 (3H, br d, OMe of MTPA), 1.95 (1H, m,
H-20a), 1.60 (1H, m, H-20b), 1.29 (4H, m, overlapping signals of H-30
and H-40), 1.25 (2H, m, H-40), 1.25 (2H, m, H-50), 1.25 (2H, m, H-60),
0.88 (3H, t, J = 6.7, H-70); ESI–TOF–MS: m/z 955.3610 [M + H]+ (calcd.
for C48H57F6O13, 955.3703).
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Acknowledgements
P.K. thanks The Thailand Research Fund (Grant No.
DBG5180014) and the Center of Excellence on Environmental
Health, Toxicology and Management of Chemicals (ETM) for finan-
cial support. S.W. and N.S. acknowledge a research grant from
Mahidol University. We thank CRI colleagues from the Laboratories
of Immunology, Pharmacology, and Biochemistry, and the Inte-
grated Research Unit for cytotoxicity tests.
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Rukachaisirikul, V., Sommart, U., Phongpaichit, S., Sakayaroj, J., Kirtikara, K., 2008.
Metabolites from the endophytic fungus Phomopsis sp. PSU-D15.
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