期刊
PHYTOCHEMISTRY LETTERS
卷 24, 期 -, 页码 1-5出版社
ELSEVIER
DOI: 10.1016/j.phytol.2017.12.012
关键词
Cytisus villosus; Isoflavonoids; Monoterpenoids; ECD
资金
- Algerian Ministry of Higher Education and Scientific Research
- University of Mississippi, School of Pharmacy, Mississippi, USA
- National Institute of General Medical Sciences (NIGMS) a component of the National Institutes of Health (NIH) [P20GM104932]
- NIH National Center for Research Resources (NCRR) [C06RR14503]
- NATIONAL CENTER FOR RESEARCH RESOURCES [C06RR014503] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [P20GM104932] Funding Source: NIH RePORTER
Phytochemical investigation of the aerial parts of Cytisus villosus Pourr. resulted in the isolation and characterization of a new isoflavan, (3S, 4S)-2',4'-dihydroxy-3'-methoxy-6,7-methylenedioxyisoflavan-4-ol (1), and a new monoterpene, (4R,6S)-4-hydroxy-2,2,6-trimethyl-9-oxabicyclo [4.2.1] non-1(8)-en-7-one (2), together with four known flavonoids: geinstein (3), chrysin (4), chrysin -7-O-beta-D-glucopyranoside (5) and 2-O-alpha-L-rhamnosylorientin (6). The structures of the new compounds were elucidated on the basis of extensive spectroscopic analysis, including 1D, 2D NMR (H-1, C-13, COSY, TOCSY, HMBC and HSQC) and HRESIMS. The absolute configurations of 1 and 2 were established by the comparison of experimental and calculated electronic circular dichroism (ECD) spectra.
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