Isolation and characterization of tirandamycins from a marine-derived Streptomyces sp.
Isolation and characterization of tirandamycins from a marine-derived Streptomyces sp.
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DOI:
10.1021/np9005597
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发表时间:
2009-11
影响因子:
5.1
通讯作者:
Sherman, David H.
中科院分区:
文献类型:
--
作者:
Carlson, Jacob C.;Li, Shengying;Burr, Douglas A.;Sherman, David H.
The novel dienoyl tetramic acids tirandamycin C (1) and tirandamycin D (2) with activity against vancomycin-resistant Enterococcus faecalis (VRE) were isolated from the marine environmental isolate Streptomyces sp. 307-9, which also produces the previously identified compounds tirandamycin A (3) and B (4). Spectroscopic analysis of 1 and 2 indicated structural similarity to 3 and 4, with differences only in the pattern of pendant oxygenation on the bicyclic ketal system. The isolation of these putative biosynthetic intermediates was enabled by their sequestration on an adsorbent resin during early stationary-phase fermentation.
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