Caesalpin J
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Arch Pharm Res. 2003 Feb;26(2):147-50.
A DNA strand-nicking principle of a higher plant, Caesalpinia sappan.[Pubmed:
12643592 ]
METHODS AND RESULTS:
To find anticancer agents from higher plants, DNA strand-scission assay method was employed for bioassay-guided fractionation as well as for screening the crude extracts. During the screening, an ethyl acetate extracts of the heartwood of Caesalpinia sappan L. (Leguminosae) exhibited potent DNA strand-scission activity.
CONCLUSIONS:
Therefore, the ethyl acetate extracts of the dried heartwood of C. sappan was subjected to the bioassay-guided fractionation, which led to the isolation of a known compound, brazilin (1) as the active constituent. In addition, caesalpine J (2) was also isolated as an inactive constituent.
J Asian Nat Prod Res. 2014;16(2):187-91.
Two new degradative cassane-type diterpenes isolated from Caesalpinia minax.[Pubmed:
24325258 ]
Cassane-type diterpenes are main bioactive constituents of Caesalpinia minax HANCE.
METHODS AND RESULTS:
As a part of our ongoing chemical investigation of C. minax, two new degradative cassane-type diterpenes, named caesalpin I (1) and Caesalpin J (2), were isolated from the EtOAc extract of the seeds of C. minax. The structures were elucidated by means of spectroscopic analysis.
