Journal
TETRAHEDRON
Volume 73, Issue 8, Pages 1105-1113Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2016.12.076
Keywords
Myrtaceae; Acylphloroglucinols; Callistemon viminalis; Cytotoxicity
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Funding
- National Natural Science Foundation of China [81430092]
- Program for New Century Excellent Talents in University [NCET-2013-1035]
- Ph.D. Programs Foundation of Ministry of Education of China [20120096130002]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R63]
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Viminalins A-O (1-15), a series of new [3+2] hybrids of acylphloroglucinols and a-phellandrene featured a 2,3-dihydrobenzofuran core were isolated from the fruits of Callistemon viminalis. Their structures were established on the basis of extensive analysis of NMR spectra, circular dichroism, and X-ray crystallography. An oxidative [3+2] cycloaddition between acylphloroglucinol and monoterpene was speculated as the key step in the biosynthetic pathway. Bioactivities screen indicated that compound 6 exhibited moderate cytotoxic activity. (C) 2017 Elsevier Ltd. All rights reserved.
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