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Title: Allahabadolactones A and B from the endophytic fungus, Aspergillus allahabadii BCC45335
Authors: Karoon Sadorn
Siriporn Saepua
Nattawut Boonyuen
Pattiyaa Laksanacharoen
Pranee Rachtawee
Samran Prabpai
Palangpon Kongsaeree
Pattama Pittayakhajonwut
King Mongkut's Institute of Technology Ladkrabang
University of Phayao
Thailand National Center for Genetic Engineering and Biotechnology
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry
Issue Date: 28-Jan-2016
Citation: Tetrahedron. Vol.72, No.4 (2016), 489-495
Abstract: © 2015 Elsevier Ltd. All rights reserved. Two new compounds, allahabadolactones A (1) and B (2), along with 10 known compounds including 16-amino-isopimar-7-en-19-oic acid (3), 16-α-d-glucopyranosyloxyisopimar-7-en-19-oic acid (4), 16-α-d-mannopyranosyloxyisopimar-7-en-19-oic acid (5), ergosterol, (22E)-5α,8α-epidioxyergosta-6,22-dien-3β-ol, cerevisterol, (R)-(-)-methoxycarbonylmellein, (-)-piliformic acid, 7-dechlorogriseofulvin, and cytochalasin D, were isolated from the endophytic fungus, Aspergillus allahabadii BCC45335. Their chemical structures were determined based on NMR spectroscopic and mass spectrometric analyses. The absolute stereochemistry of compound 1 was established by an X-ray crystallographic analysis and the reactions with Mosher's reagents. A plausible biosynthesis of allahabadolactones A (1) and B (2) was also proposed. Antibacterial activity against Bacillus cereus and cytotoxicity against MCF-7, KB, NCI-H187, and Vero cells of the isolated compounds were also evaluated.
ISSN: 14645416
Appears in Collections:Scopus 2016-2017

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