Cinnamonum zeylanicum

O-acetate (162), which possesses a bridgehead double bond, was established by X-ray analysis. The structures of the congeners were then related to this by a series of spectral correlations. Cinnzeylanine (163) and its desacetoxy alcohol, cinnzeylanol, are insecticidal polyhydroxylated pentacyclic diterpenoids, which were isolated from Cinnamonum zeylanicum. Their structure, which is similar to that of ryanodine, was established by X-ray analysis. 

Aromatic versions of cyclohexane monoterpenes (benzenoid menthanes or cymenes) are also found in nature and are constituents of some plants frequently used as spices. The hydrocarbon p-cymene (E19) has been found to occur in the oils of cinnamon (Cinnamonum zeylanicum), cypress, eucalyptus, thyme, and turpentine, whereas m-cymene (E20) is a constituent of the oil of blackcurrant Rites nigrum, Saxifragaceae). The corresponding phenols, thymol (p-cymen-3-ol) (E21) and carvacrol... 

Schmidt, E., L. Jirovetz, G. Buchhauer, et al. 2006. Composition and antioxidant activities of the essential oil of cinnamon Cinnamonum zeylanicum Blume) leaves of Sri Lanka. J. Essent. Oil Bear. Plants, 9(2) 170-182. 

The seeds of anise (Pimpinella anisum), fennel Foeniculum vulgare), caraway (Carun carvi) and coriander (Coriandrum sativum) characteristically contain chlorogenic acids at concentrations up to 3g/l (Clifford 1999). Cinnamon Cinnamonum zeylanicum) and cassia (Cinnamonum cassia) contain cinnamaldehyde and 2-hydroxydimamaldehyde (Figure 7.45) at 170 g/kg (Shan etal. 2005). 

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