期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 28, 期 3, 页码 315-318出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2017.12.049
关键词
Aspergillus terreus; Butenolide derivatives; alpha-Glucosidase inhibitors; Antioxidant activity
资金
- National Natural Science Fund for Distinguished Young Scholars of China [81225023]
- National Natural Science Fund of China [U1605221, 41476121, 31600014, 81402844, 81741151]
- Fund of the Science and Technology Commission of Shanghai Municipality [15431900900]
Two new butenolide derivatives (+/-)-asperteretal D ((+/-)-1) and asperteretal E (2) containing rare 2-benzyl-3-phenyl substituted lactone core, together with nine known analogues (3-11) were obtained from a fungus Aspergillus terreus derived from the marine sponge Phakellia fusca. All the structures were elucidated on the basis of extensive NMR spectroscopic data. The chiral chromatography analyses allowed the separation of the (+/-)-asperteretal D, of which the absolute configurations were determined by comparing the experimental to calculated electronic circular dichroic (ECD) spectra. Compounds (+/-)-1, 2-5, and 7 exhibited potent inhibitory activities against alpha-glucosidase with IC50 values ranging from 8.65 to 20.3 mu M (positive control acarbose with an IC50 value of 320 mu M). In addition, derivatives 5-8 also showed moderate antioxidant activities. (C) 2017 Elsevier Ltd. All rights reserved.
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