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  1. University of Yangon
  2. Department of Chemistry

A New Meroditerpene and a New Tryptoquivaline Analog from the Algicolous Fungus Neosartorya takakii KUFC 7898

http://hdl.handle.net/20.500.12678/0000002600
http://hdl.handle.net/20.500.12678/0000002600
8667018f-a826-48fe-b173-3c3383eabbf5
ee677f24-1dc6-47a3-aa59-39b8e3810fa7
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Title
Title A New Meroditerpene and a New Tryptoquivaline Analog from the Algicolous Fungus Neosartorya takakii KUFC 7898
Language en
Publication date 2015
Authors
War War May Zin
Buttachon, Suradet
Buaruang, Jamrearn
Gales, Luís
Pereira, Jose A.
Pinto, Madalena M. M.
Silva, Artur M. S.
Kijjoa, Anake
Description
A new meroditerpene sartorenol (1), a new natural product takakiamide (2) and a new tryptoquivaline analog (3) were isolated, together with nine known compounds, including aszonapyrone A, chevalone B, aszonalenin, acetylaszonalenin, 3′-(4-oxoquinazolin-3-yl) spiro[1H-indole-3,5′-oxolane]-2,2′-dione, tryptoquivalines L, F and H, and the isocoumarin derivative, 6-hydroxymellein, from the ethyl acetate extract of the culture of the algicolous fungus Neosartorya takakii KUFC 7898. The structures of the new compounds were established based on 1D and 2D NMR spectral analysis, and, in the case of sartorenol (1) and tryptoquivaline U (3), X-ray analysis was used to confirm their structures and to determine the absolute configuration of their stereogenic carbons. Compounds 1, 2 and 3 were evaluated for their antimicrobial activity against Gram-positive and Gram-negative bacteria, and multidrug-resistant isolates from the environment; however, none exhibited antibacterial activity (MIC ˃ 256 mg/mL). The three new compounds did not show any quorum sensing inhibition in the screening protocol based on the pigment production by Chromobacterium violaceum (ATCC 31532).
Keywords
Neosartorya takakii
Identifier http://uyr.uy.edu.mm/handle/123456789/98
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