Classification Term: 170662
Tetrahydroisoquinoline alkaloids (ontology term: c4dc7f7db8cf2f47d80e339bed5fcff2)
found 183 associated metabolites at sub_class
metabolite taxonomy ontology rank level.
Ancestor: Tyrosine alkaloids
Child Taxonomies: There is no child term of current ontology term.
Salsolinol
(r)-salsolinol, also known as salsolinol, (+-)-isomer or 1-methyl-6,7-dihydroxytetrahydroisoquinoline, is a member of the class of compounds known as tetrahydroisoquinolines. Tetrahydroisoquinolines are tetrahydrogenated isoquinoline derivatives (r)-salsolinol is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). (r)-salsolinol can be found in cocoa and cocoa products and fruits, which makes (r)-salsolinol a potential biomarker for the consumption of these food products (r)-salsolinol can be found primarily in blood, cerebrospinal fluid (CSF), and feces. Moreover, (r)-salsolinol is found to be associated with hypertension, multiple system atrophy, and parkinsons disease. Salsolinol belongs to the family of Isoquinolines. These are aromatic polycyclic compounds containing an isoquinoline moiety, which consists of a benzene ring fused to a pyridine ring and forming benzo[c]pyridine. Salsolinol is a biomarker for the consumption of bananas.
Hydrastine
Hydrastine is a member of isoquinolines. It has a role as a metabolite. Hydrastine is a natural product found in Hydrastis canadensis, Fumaria indica, and other organisms with data available. See also: Goldenseal (part of). A natural product found in Hydrastis canadensis. Origin: Plant; SubCategory_DNP: Isoquinoline alkaloids, Benzylisoquinoline alkaloids relative retention time with respect to 9-anthracene Carboxylic Acid is 0.582 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.578 Hydrastine is a natural alkaloid which is present in Hydrastis canadensis and other plants of the ranunculaceae family.
Fumaricine
Hydrocotarnine
Hydrocotarnine is an alkaloid from opium (Papaver somniferum). Alkaloid from opium (Papaver somniferum). Hydrocotarnine is a Cbl inhibitor, and results in inflammasome-mediated IL-18 secretion in colitis. Hydrocotarnine increases expression of GLUT1 and cellular glucose uptake in glycolytic metabolism. Hydrocotarnine acts as an agent that provides analgesic effect in cancer research[1][2][3].
Secoisotetrandrine
Secoisotetrandrine is found in herbs and spices. Secoisotetrandrine is an alkaloid from leaves of Laurelia sempervirens (Peruvian nutmeg). Alkaloid from leaves of Laurelia sempervirens (Peruvian nutmeg). Secoisotetrandrine is found in herbs and spices.
Bargustanine
Bargustanine is found in tea. Bargustanine is an alkaloid from roots of Berberis vulgaris (barberry
Hydrastine
5,6,7,8-Tetramethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline
Salsolinol
Salsolinol is an endogenous catechol isoquinoline detected in humans. Salsolinol was detected in urine of parkinsonian patients administered with L-DOPA. This finding stimulated the studies on Salsolinol derivatives in the brain, and gave new aspects of the endogenous alkaloids, which had been considered to occur only in plants. In normal non-alcoholic subjects and alcoholics, Salsolinol and O-methylated Salsolinol were found in urine, cerebrospinal fluid and brains. Salsolinol has an asymmetric center at first position and exists as (R)- and (S)enantiomer. The (R)enantiomer of Salsolinol is predominant in urine from healthy volunteers. Only the (R)enantiomers of Salsolinol and N-methylated Salsolinol occur in the human brain, cerebrospinal fluid (CSF) and intraventricular fluid (IVF), and the (S)enantiomers were not detected. (R)salsolinol synthase catalyzes the enantio-selective synthesis of (R)Salsolinol and 1-carboxyl(R)Salsolinol from dopamine with acetaldehyde or pyruvic acid. The N-methylation of (R)salsolinol into N-methylsalsolinol (NMSal) is catalyzed by two N-methyltransferases with different optimum pH, at pH 7.0 and 8.4. NM(R)Salsolinol is enzymatically oxidized into 1,2-dimethyl-6,7-dihydroxyisoquinolinium ion (DMDHIQ+) by an oxidase sensitive to semicarbaside and also non-enzymatically by autoxidation. NM(R)Salsolinol and its precursor, dopamine, were found to occur selectively in the nigro-striatum, whereas (R)Salsolinol distributes uniformly among the brain regions. (PMID 14697894) [HMDB]. Acquisition and generation of the data is financially supported by the Max-Planck-Society IPB_RECORD: 1521; CONFIDENCE confident structure
Hydrocotarnine
Annotation level-1 Hydrocotarnine is a Cbl inhibitor, and results in inflammasome-mediated IL-18 secretion in colitis. Hydrocotarnine increases expression of GLUT1 and cellular glucose uptake in glycolytic metabolism. Hydrocotarnine acts as an agent that provides analgesic effect in cancer research[1][2][3].