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Ursane and tirucallane-type triterpenes of Boswellia rivae oleo-gum resin
(Taylor &Francis, 2016)
Two new ursane-type triterpenes characterized as 3-oxo-24-acetoxy11α-hydroxy-urs-12-ene (1) and methyl 3α-acetoxy-11α-methoxyurs-12-en-24-oate (2), together with known compounds 3–11,
were isolated from Boswellia rivae ...