Total Syntheses of Proposed (±)-Trichodermatides B and C.
Total Syntheses of Proposed (±)-Trichodermatides B and C.
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DOI:
10.1016/j.tetlet.2013.07.137
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发表时间:
2013-10-09
影响因子:
1.8
通讯作者:
Hsung RP
中科院分区:
文献类型:
--
作者:
Li Q;Xu YS;Ellis GA;Bugni TS;Tang Y;Hsung RP
Total syntheses of putative (±)-trichodermatides B and C are described. These efficient syntheses feature the oxa-[3 + 3] annulation strategy, leading to B and C along with their respective C2-epimers. However, these synthetic samples are spectroscopically very different from the natural products. DFT calculations of C13 chemical shifts are conducted and the predicted values are in good agreement with those of synthetic samples, thereby questioning in the accuracy of structural assignments of trichodermatides B and C.
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