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Abstract
Cassane-type diterpenes are main bioactive constituents of Caesalpinia minax HANCE. As a part of our ongoing chemical investigation of C. minax, two new degradative cassane-type diterpenes, named caesalpins I (1) and J (2), were isolated from the EtOAc extract of the seeds of C. minax. The structures were elucidated by means of spectroscopic analysis.
Acknowledgments
The work was financially supported by the technological large platform for comprehensive research and development of new drugs in the Eleventh Five-Year “Significant New Drugs Created” Science and Technology Major Projects (No. 2009ZX09301-003), the National Natural Science Foundation of China (No. 30973626), Innovation Capacity-building in Guangxi Science and Technology Agency (No. 10100027-3), the National Science and Technology Support Program (No. 2012BA127B06), the Guangxi Science and Technology Achievements Transformation Project (No. 1298009-22), and the Scientific and Technological Project in Nanning City (No. 201102088C).
Notes
1. These authors contributed equally to this work.