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Molecules 2008, 13(10), 2474-2481; doi:10.3390/molecules13102474
Article

Norcyperone, a Novel Skeleton Norsesquiterpene from Cyperus rotundus L.

1, 1, 2,* , 3, 3 and 1,*
Received: 21 August 2008 / Revised: 25 September 2008 / Accepted: 26 September 2008 / Published: 10 October 2008
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Abstract

A novel norsesquiterpene, named norcyperone (1), and three known compounds: (-)-clovane-2,9-diol (2), rosenonolactone (3), and 5a,8a-epidioxy-(20S,22E,24R)-ergosta-6,22-dien-3β-ol (4) were isolated from the rhizomes of Cyperus rotundus L. The structure of 1 was elucidated as 8,11,11-trimethylbicyclo[5.3.1]undecane-5a, 8a-epoxy-3-one on the basis of extensive spectroscopic analyses, including 1D- and 2D-NMR, MS experiments, and single-crystal X-ray diffraction. This is the first report of a 8,11,11-trimethyl- bicyclo[5.3.1]undecane-3-one type norsesquiterpene with a tetrahydrofuran ring at C-5 and C-8.
Keywords: Cyperus rotundus L.; norsesquiterpene; norcyperone; bicyclo[5.3.1]undecane-3-one Cyperus rotundus L.; norsesquiterpene; norcyperone; bicyclo[5.3.1]undecane-3-one
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Xu, Y.; Zhang, H.-W.; Yu, C.-Y.; Lu, Y.; Chang, Y.; Zou, Z.-M. Norcyperone, a Novel Skeleton Norsesquiterpene from Cyperus rotundus L.. Molecules 2008, 13, 2474-2481.

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