From Boswellia serrata Burseraceae

Boswellic acids are constituents of incense (olibanum) from Boswellia serrata and B. carterii (Burseraceae) a-boswellic acid incorporates the 12-oleanene core structure (section 6.3.3), while 12-ursene is the parent hydrocarbon of p-boswellic acid and ketoboswellic acid. Various derivatives of boswellic acids are reported to have antiinflammatory properties and therefore are suggested to be potential cortisone substitutes. 

Boswelic acids are pentacyclic triterpenoids isolated from gum resin secreted by trees of Boswellia serrata Roxb. (Burseraceae). P-Boswelic acid... 

Olibanum (frankincense) is one of a group known as the oleogum resins (mono-, sesqui-, di-, and triterpenes and mucous substances) that exude from incisions in the bark of the Boswellia trees (fam Burseraceae), the most common species of which are B. carterii (Sudan, Somalia, and Ethiopia) and B. serrata (India), whereas B. frereana (Oman, Somalia) and B. sacra (Arabia) belong to the rare resins on the market. 

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