Narceine: Difference between revisions

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Narceine is a natural alkaloid compound found in certain species of poppy plants, particularly in the Papaver somniferum variety. It is classified as a narcotic analgesic, meaning it has pain-relieving properties similar to morphine. Narceine is known for its sedative and antitussive (cough-suppressing) effects, making it a valuable component in traditional medicine and pharmaceuticals.
{{DISPLAYTITLE:Narceine}}


== Chemical Properties ==
== Narceine ==
Narceine has a molecular formula of C22H27NO9 and a molecular weight of 437.45 g/mol. It is structurally related to other opium alkaloids such as morphine and codeine. The compound is a white crystalline solid with a bitter taste and is soluble in water and alcohol.
[[File:Narceine.svg|thumb|right|Chemical structure of Narceine]]
 
'''Narceine''' is an [[alkaloid]] found in the [[opium poppy]] (''[[Papaver somniferum]]''). It is one of the many [[opium alkaloids]] that are derived from the plant, which is well-known for its use in producing [[morphine]], [[codeine]], and other related compounds. Narceine is less well-known than some of its counterparts but plays a role in the complex chemistry of opium.
 
== Chemical Structure ==
Narceine is classified as a [[benzylisoquinoline alkaloid]], a group characterized by their complex ring structures. The chemical structure of narceine includes a [[phenanthrene]] core, which is common among opium alkaloids. The structure is depicted in the image to the right, showing its intricate arrangement of carbon, hydrogen, nitrogen, and oxygen atoms.


== Pharmacology ==
== Pharmacology ==
Narceine acts primarily as a central nervous system depressant, binding to opioid receptors in the brain and spinal cord. It exhibits analgesic effects by modulating pain perception and transmission. Additionally, narceine has sedative properties, inducing a calming and sleep-inducing effect on the body. Its antitussive activity is attributed to its ability to suppress the cough reflex.
Narceine, like other opium alkaloids, interacts with the [[central nervous system]]. However, its pharmacological effects are not as potent or well-studied as those of morphine or codeine. It is believed to have mild [[analgesic]] properties, but it is not commonly used in clinical practice.
 
== Biosynthesis ==
The biosynthesis of narceine in the opium poppy involves several enzymatic steps starting from the amino acid [[tyrosine]]. The pathway includes the formation of [[reticuline]], a key intermediate in the synthesis of many opium alkaloids. Enzymes such as [[N-methylcoclaurine 3'-monooxygenase]] and [[salutaridine synthase]] play roles in the conversion of reticuline to narceine and other related compounds.
 
== Related Compounds ==
Narceine is structurally related to other opium alkaloids such as [[morphine]], [[codeine]], and [[thebaine]]. These compounds share similar biosynthetic pathways and chemical features, but differ in their pharmacological effects and clinical uses.
 
== Historical Context ==
The study of narceine and other opium alkaloids dates back to the 19th century, when chemists first began isolating and characterizing the active components of opium. The understanding of these compounds has contributed significantly to the fields of [[pharmacology]] and [[medicine]].


== Medical Uses ==
== See Also ==
Narceine has been used in traditional medicine for its pain-relieving and sedative properties. In pharmaceuticals, it is sometimes included in cough syrups and other formulations to alleviate coughing. However, due to its narcotic nature and potential for abuse, narceine is not commonly prescribed in modern medical practice.
* [[Opium poppy]]
* [[Opium alkaloids]]
* [[Morphine]]
* [[Codeine]]
* [[Biosynthesis of alkaloids]]


== Side Effects and Precautions ==
== Related Pages ==
Like other opioid compounds, narceine can cause side effects such as drowsiness, dizziness, constipation, and respiratory depression. Prolonged use or high doses of narceine can lead to tolerance, dependence, and addiction. It is important to use narceine under the supervision of a healthcare professional and follow prescribed dosages to minimize the risk of adverse effects.
* [[Papaver somniferum]]
* [[Alkaloid]]
* [[Analgesic]]


[[Category:Alkaloids]]
[[Category:Opium alkaloids]]
[[Category:Pharmacology]]
[[Category:Benzylisoquinoline alkaloids]]
[[Category:Traditional Medicine]]
{{medicine-stub}}

Latest revision as of 03:28, 13 February 2025


Narceine[edit]

Chemical structure of Narceine

Narceine is an alkaloid found in the opium poppy (Papaver somniferum). It is one of the many opium alkaloids that are derived from the plant, which is well-known for its use in producing morphine, codeine, and other related compounds. Narceine is less well-known than some of its counterparts but plays a role in the complex chemistry of opium.

Chemical Structure[edit]

Narceine is classified as a benzylisoquinoline alkaloid, a group characterized by their complex ring structures. The chemical structure of narceine includes a phenanthrene core, which is common among opium alkaloids. The structure is depicted in the image to the right, showing its intricate arrangement of carbon, hydrogen, nitrogen, and oxygen atoms.

Pharmacology[edit]

Narceine, like other opium alkaloids, interacts with the central nervous system. However, its pharmacological effects are not as potent or well-studied as those of morphine or codeine. It is believed to have mild analgesic properties, but it is not commonly used in clinical practice.

Biosynthesis[edit]

The biosynthesis of narceine in the opium poppy involves several enzymatic steps starting from the amino acid tyrosine. The pathway includes the formation of reticuline, a key intermediate in the synthesis of many opium alkaloids. Enzymes such as N-methylcoclaurine 3'-monooxygenase and salutaridine synthase play roles in the conversion of reticuline to narceine and other related compounds.

Related Compounds[edit]

Narceine is structurally related to other opium alkaloids such as morphine, codeine, and thebaine. These compounds share similar biosynthetic pathways and chemical features, but differ in their pharmacological effects and clinical uses.

Historical Context[edit]

The study of narceine and other opium alkaloids dates back to the 19th century, when chemists first began isolating and characterizing the active components of opium. The understanding of these compounds has contributed significantly to the fields of pharmacology and medicine.

See Also[edit]

Related Pages[edit]