Boswellia papyrifera

Of the glycosides, as other naturally occurring ones, they are the most numerous cases. The moieties of xylopyranosyl [11,12], rhamnopyranosyl [13,14] and apiofuranosyl [15] have also been found. Some glycosides possess two sugar moieties such as rutinosides (26-28) [16,17], mulberrosides D and E (32 and 33) [18], gnetifolin K (44) [19], compounds 24 [20], 25 [21], 30 [22], 45 [23], 46, 48-50 [24-26], 62 and 64 [13,15] other glycosides possess three sugar moieties such as compound 47 from the cell cultures of Vitis vinifera [24] and compound 63 from Boswellia papyrifera [13]. 

Two new stilbene glycosides 63 and 64 from Boswellia papyrifera displayed significant inhibition of phosphodiesterase I, which is associated with cancer metastasis [13]. Another stilbene glycoside 24 from Polygonum multiflorum showed strong DNA cleavage activity [20]. 

Iran.v-4, 5-dihydr0xy-3-methnxystilbene-5-O- o-L-rhamnopyrannsyl-(l—>2)-[ -r-rhamnopyranosyl-(l—>6)][-/tD-glucopyranOside Boswellia papyrifera 13... 

Trees of the genus Boswellia (Burseraceae) exude gum frankincense, a mixture of a resin and an acidic polysaccharide. The acidic polysaccharides of the exudates of Boswellia papyrifera and B, carteri are indicated to be substituted, branched galactans (see 159, 162, 174). The polysaccharide obtained from gum myrrh, which exudes from the damaged bark of Commiphora myrrha (Burseraceae) (159, 174), is difficult to isolate because of its association with protein (162). 

The chemical composition of B. papyrifera olibanum is markedly different from that of other Boswellia, with small amounts of monoterpenes and sesquiterpenes, large amounts of w-octanol (18) and -octy I acetate (40), with the latter being the major compound, and the presence of particular diterpenes [incensole (127), incen-sole acetate (129), incensole oxide (130) and incensole oxide acetate (131)] and the absence of both isoincensole and isoincensole acetate (128). Linear carboxylic acids from hexanoic acid (10) to lauric acid (93) were also identified in B. papyrifera olibanum exclusively. 

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