Hyperacmosin N, New Acylphloroglucinol Derivative With Complicated Caged Core From Hypericum Acmosepalum
TETRAHEDRON(2021)
摘要
Three new polycyclic polyprenylated acylphloroglucinol derivatives, hyperacmosins N -P (1-3), were isolated from the air-dried aerial parts of Hypericum asmosepalum. Especially, compound 1 possessed a rare hex acyclic core, which was formed via oxidation and radical cyclization. Their structures were established by NMR, HRMS (ESI), and experimental electronic circular dichroism (ECD) spectra. The plausible biogenetic pathways of 1-3 were proposed, which gave an insight for future biomimetic synthesis of the novel compounds. (c) 2021 Elsevier Ltd. All rights reserved.
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关键词
Hypericum acmosepalum, PPAPs, Hexacyclic skeleton, Radical cyclization
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