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Olibanic Acid
Olibanic acid is an organic compound that is naturally found in frankincense. Even though it is present in smaller concentrations than other components, it has a highly potent odor and is believed to be one of the key components responsible for the distinctive smell of frankincense. Both the (1S,2S)-(+)-''trans'' and (1S,2R)-(+)-''cis'' enantiomer In chemistry, an enantiomer (Help:IPA/English, /ɪˈnænti.əmər, ɛ-, -oʊ-/ Help:Pronunciation respelling key, ''ih-NAN-tee-ə-mər''), also known as an optical isomer, antipode, or optical antipode, is one of a pair of molecular entities whi ...s are present and have similar but not identical "old church"-like odors. References Cyclopropanes Carboxylic acids {{alkanederivative-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frankincense
Frankincense, also known as olibanum (), is an Aroma compound, aromatic resin used in incense and perfumes, obtained from trees of the genus ''Boswellia'' in the family (biology), family Burseraceae. The word is from Old French ('high-quality incense'). There are several species of ''Boswellia'' that produce true frankincense: ''Boswellia sacra'' (synonym (taxonomy), syn. ''B. bhaw-dajiana'', syn. ''B. carteri''), ''Boswellia frereana, B. frereana'', ''Boswellia serrata, B. serrata'' (''B. thurifera''), and ''Boswellia papyrifera, B. papyrifera''. Resin from each is available in various grades, which depends on the time of harvesting. The resin is hand-sorted for quality. Etymology The English word ''frankincense'' derives from the Old French expression , meaning 'true incense', maybe with the sense of 'high quality incense'. The adjective in Old French meant 'noble, true', in this case perhaps 'pure'; although ''franc'' is ultimately derived from the tribal name of the Franks, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odor
An odor (American English) or odour ( Commonwealth English; see spelling differences) is a smell or a scent caused by one or more volatilized chemical compounds generally found in low concentrations that humans and many animals can perceive via their olfactory system. While ''smell'' can refer to pleasant and unpleasant odors, the terms ''scent'', ''aroma'', and ''fragrance'' are usually reserved for pleasant-smelling odors and are frequently used in the food and cosmetic industry to describe floral scents or to refer to perfumes. Odor physiology Sense of smell The perception of odors, or sense of smell, is mediated by the olfactory nerve. The olfactory receptor (OR) cells are neurons present in the olfactory epithelium, which is a small patch of tissue at the back of the nasal cavity. There are millions of olfactory receptor neurons that act as sensory signaling cells. Each neuron has cilia in direct contact with the air. Odorous molecules bind to receptor pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enantiomer
In chemistry, an enantiomer (Help:IPA/English, /ɪˈnænti.əmər, ɛ-, -oʊ-/ Help:Pronunciation respelling key, ''ih-NAN-tee-ə-mər''), also known as an optical isomer, antipode, or optical antipode, is one of a pair of molecular entities which are mirror images of each other and non-superposable. Enantiomer molecules are like right and left hands: one cannot be superposed onto the other without first being converted to its mirror image. It is solely a relationship of chirality (chemistry), chirality and the permanent three-dimensional relationships among molecules or other chemical structures: no amount of re-orientation of a molecule as a whole or conformational isomerism, conformational change converts one chemical into its enantiomer. Chemical structures with chirality rotate plane-polarized light. A mixture of equal amounts of each enantiomer, a ''racemic mixture'' or a ''racemate'', does not rotate light. Stereoisomers include both enantiomers and diastereomers. Diaste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclopropanes
Cyclopropanes are a family of organic compounds containing the cyclopropyl group. The parent is cyclopropane (). Synthesis and reactions Most cyclopropanes are not prepared from the parent cyclopropane, which is somewhat inert. Instead, yclopropyl groups are often prepared by cyclization of 1,3-difunctional alkanes. An example of the former, cyclopropyl cyanide is prepared by the reaction of 4- chlorobutyronitrile with a strong base. Phenylcyclopropane is produced analogously from the 1,3-dibromide. A second major route to cyclopropanes entails addition of methylene (or its substituted derivatives) to an alkene, a process called cyclopropanation. Substituted cyclopropanes undergo the reactions associated with the cyclopropyl ring or the substituents. Vinylcyclopropanes are a special case as they undergo vinylcyclopropane rearrangement. Simple substituted cyclopropanes * Chlorocyclopropane * Cyclopropane carboxylic acid * Cyclopropyl amine * Cyclopropyl cyanide * Cycloprop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
