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Three new cassane‐type diterpenes, neocaesalpin AF (1), neocaesalpin AG (2), and neocaesalpin AH (3), were isolated from the seeds of Caesalpinia minaxHance. Their structures were elucidated on the basis of extensive spectroscopic analyses. The partially hydrogenated lactone unit in a tetracyclic cassane diterpene in 2 is rarely encountered in the cassane diterpenes isolated from the genus Caesalpinia....
Three new cassane‐type diterpenes, 14‐dehydroxy‐12,16‐dihydrocaesaldekarin L (1), 1‐deacetyl‐12‐ethoxyneocaesalpin N (2), and 1‐deacetylneocaesalpin N (3), together with two known cassane‐type diterpenes, neocaesalpin A and neocaesalpin L, were isolated from the EtOH extract of the twigs and leaves of Caesalpinia minax. Their structures were elucidated by spectroscopic methods, as well as by comparison...
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