New Antiviral Cassane Furanoditerpenes from Caesalpinia minax
- 26 September 2001
- journal article
- review article
- Published by American Chemical Society (ACS) in Journal of Natural Products
- Vol. 64 (10), 1266-1272
- https://doi.org/10.1021/np010174+
Abstract
A bioassay-guided study led to the isolation of five new cassane furanoditerpenes, designated as caesalmin C (1), D (2), E (3), F (4), and G (5), along with stigmasterol (6) from the seeds of Caesalpinia minax. The 1H and 13C NMR spectra were completely assigned by using a combination of 2D NMR analyses. The structures of all five furanoditerpenes were confirmed by X-ray analyses. The structure of 6 was verified by X-ray analysis for the first time. The bioassay results showed that the anti-Para3 virus activity of tetracyclic furanoditerpenoids 1−4 is more potent than that of the furanoditerpenoid lactone 5, which is in turn better than 6. As the major components of the plant possess significant potent activity, it may be feasible to develop new antiviral agents from this source.Keywords
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