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Two new triterpenoid glycosides, 3α,19α,23α‐trihydroxy‐2‐oxo‐12‐ursen‐28‐O‐β‐d‐glucopyranoside (1) and 3α,19α,23α‐trihydroxy‐2‐oxoolean‐12‐en‐28‐O‐β‐d‐glucopyranoside (2) as well as three known compounds, 2α,3α,19α‐trihydroxyolean‐12‐en‐28‐O‐β‐d‐glucopyranoside (3), 2α,3α,19α,23‐tetrahydroxy‐12‐ursen‐28‐O‐β‐d‐glucopyranoside (4), and 2α,3β,19α,23‐tetrahydroxyurs‐12‐en‐28‐oic acid (5) were isolated...
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....
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