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10 resultados
Ten undescribed cembrane-type diterpenoids from the gum resin of Boswellia sacra and their biological activities
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Ten undescribed cembrane-type diterpenes boscartins AL-AU, as well as five known analogues were isolated from Boswellia sacra Flueck. The relative configurations of these boscartins were established by extensive spectroscopic analysis of NMR spectra, IR and MS. The absolute configurations of
Boscartins L-O: Cembrane-type diterpenoids from the gum resin of Boswellia sacra Flueck.
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Four undescribed cembrane-type diterpenoids, boscartins L-O, as well as five known compounds (1S, 3R, 11S, 12R, 7E)-1,12-epoxy-4-methylenecembr-7- ene- 3,11-diol, isoincensole oxide, incensole oxide, incensole acetate and incensole oxide acetate were isolated from the gum resin of Boswellia sacra
Bioactive cembrane diterpenoids from the gum resin of Boswellia carterii
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Eight new cembrane-type diterpenoids, boscartins AP-AW (1-8) were obtained from the gum resin of Boswellia carterii. Among which, six ones (2-7) were isomers, with one hydroxy group and two double bonds migrating along the carbocycle. The structures were elucidated by spectroscopic examination. All
Bioactive cembrane-type diterpenoids from the gum-resin of Boswellia carterii.
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Chemical examination of the gum-resin of Boswellia carterii resulted in the isolation and characterization of eighteen new cembrane-type diterpenoids, named as Boscartins P-AG (1-18) and eight known ones. Their structures were established on the basis of extensive spectroscopic (2D NMR, IR, CD, MS
Neuroactive and Anti-inflammatory Frankincense Cembranes: A Structure-Activity Study.
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An expeditious isolation method for the cembrane diterpene alcohols incensol (1a) and serratol (2) has been developed from respectively African and Indian frankincense. The two native alcohols and a series of semisynthetic derivatives of incensol were evaluated for transient receptor potential
Complete structural assignment of serratol, a cembrane-type diterpene from Boswellia serrata, and evaluation of its antiprotozoal activity.
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From the dichloromethane extract obtained from the gum resin of Boswellia serrata Roxb. (Burseraceae), a well-known medicinal plant resin ("Indian Olibanum"), the cembrane-type diterpene serratol was isolated in high yield. Its structure, previously reported without clear specification of
Anti-inflammatory activities of the triterpene acids from the resin of Boswellia carteri.
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Boswellic acids are the main well-known active components of the resin of Boswellia carteri (Burseraceae) and these are still dealing with the ethnomedicinal use for the treatment of rheumatoid arthritis and other inflammatory diseases. Although several studies have already been reported on the
Cancer chemopreventive effects and cytotoxic activities of the triterpene acids from the resin of Boswellia carteri.
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Fifteen triterpene acids, viz., seven of the beta-boswellic acids (ursane-type) (1-7), two of the alpha-boswellic acids (oleanane-type) (8, 9), two of the lupeolic acids (lupane-type) (10, 11), and four of the tirucallane-type (12-14, 16), and two cembrane-type diterpenes (17, 18), isolated from the
Holy smoke in medieval funerary rites: chemical fingerprints of frankincense in southern Belgian incense burners.
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Frankincense, the oleogum resin from Boswellia sp., has been an early luxury good in both Western and Eastern societies and is particularly used in Christian funerary and liturgical rites. The scant grave goods in late medieval burials comprise laterally perforated pottery vessels which are usually
Triterpenic Acids as Non-Competitive α-Glucosidase Inhibitors from Boswellia elongata with Structure-Activity Relationship: In Vitro and In Silico Studies.
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Fourteen triterpene acids, viz., three tirucallane-type (1-3), eight ursane-type (4-11), two oleanane-type (12, 13) and one lupane type (21), along with boswellic aldehyde (14), α-amyrine (15), epi-amyrine (16), straight chain
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