Cistaceae

The plants that exude diterpenoid resins belong to the order of conifers. Pine resins (from the Firms genus), Strasburg turpentine (from the Abies genus), Venice turpentine (from Larix decidua) were extracted from Pinaceae. Sandarac, juniper and cypress resins were extracted from trees of the Cupressaceae family Tetraclinis articulata, Juniperus spp. and Cupressus semprevirens, respectively. Moreover, labdanum resin from the Cistaceae family (Cistus spp.) also belongs to the diterpenoid resins. 

Labdanum resin (from the Cistaceae family) contains diterpenoid compounds with a labdane-type structure, namely laurifolic, cistenolic and labdanolic acids [100 103]. 

CHCl soluble part) Cistaceae Cistus salviifolius L. -9.0 2.6 0.7... 

Flavonoid sulphates such as quercetin 3,7-di-O-methyl 3-sulphate and kaempferol 7-0-methyl 3-sulphate, which inhihited the growth of Mycobacterium tuberculosis and Klebsiella pneumoniae, were isolated from the -hutanol fraction of 80% methanol extract of Argyreia speciosa (Burm. f) Boj. (Convolvulaceae), while flavonoids with mti-Helicobacter pylori activity, such as quercetin 3-methyl ether (isorhamnetin) (Fig. 3), were isolated from Cistus laurifolius L. (Cistaceae). ... 

Xylosyl(l 6)glucoside Cistus ladanifer pollen Cistaceae 311... 

Labdauuui absolute and Labdauum oil are obtained from labdanum gum, which is exuded when twigs of Cistus ladaniferus L. (Cistaceae) are boiled in water. 

The Cistaceae are found in the warmer parts of the northern hemisphere, particularly in the Mediterranean region. Their only economic importance is as ornamentals. 

Rhamnetin (= 3,5,3, 4 -Tetrahydroxy-7-methoxyflavone) (flavonol) Cistus spp. (Cistaceae) many Asteraceae Lamiaceae Aminopeptidase N (54% inhibition at 300 pM) [63]... 

Cistaceae). It is soluble in most fixed oils and in mineral oil, but it is insoluble in glycerin and in propylene glycol. 

Acetophenone Cistus ladaniferus (Cistaceae), Abolishes V-K+CH block by... 

Cistus spp. (Cistaceae), Apiaceae, Asteraceae, Euphorbiaceae, Lamiaceae glycosides in Thalictrum (Ranunculaceae), Rhamnus (Rhamnaceae), Tamarix (Tamaricaceae) spp. 

The diterpenoids, which contain 20 carbon atoms, are represented by acyclic, monocyclic, bicyclic, tricyclic, and tetracyclic structures. Over 5,000 naturally occurring diterpenoids, many of which frequently occur in plant families Araliaceae, Aster-aceae, Cistaceae, Cupressaceae, Euphorbiaceae, Leguminosae, Labiatae, and Pinaceae, are known (32). The acyclic diterpenoid... 

Labdanes. A large group of diterpenes with the skeleton (1). Both enantiomers occur in nature. L. were first isolated from conifers . They also occur in tobacco, Asteraceae Lamiaceae Cistaceae Apocy naceae etc. Some of the compounds contain further rings. The L. are mostly derived from the grindelane diterpenes examples grindelic acid (2), sclareol (3) , larixol (4), agathadiol (5) and isoandalusol (6) . 

Occurs as the methyl ether in conifers (exc. Pinaceae), Taxopsida and Cistaceae. Mp 285-290°. Opt. inactive (meso-). 

---