tetracyclic


Also found in: Wikipedia.

tetracyclic

(ˌtɛtrəˈsaɪklɪk)
adj
(Chemistry) chem (of a compound) containing four rings in its molecular structure
Mentioned in ?
References in periodicals archive ?
Ocotillol-type saponins share a tetrahydrofuran ring as the tetracyclic triterpenoids, which is rare existing in Panax quinquefolius L., Panax japonicus, Hana mina, and Vietnamese ginseng [1].
Based on literature review, 10 ligands [A1-A5, NIT-D, compound-6 (with a quinazoline core), P02, Doxytetracycline (with tetracyclic ring structure) and Rolitetracycline (with tetracyclic ring structure)] were downloaded from Maybridge chemical database (48).
9) show that terpenoids, including pentacyclictriterpanes, tricyclic terpanes, gammacerane, and a small quantity of tetracyclic terpanes, are detected in all oil shale samples.
* Minocycline is a broad-spectrum tetracyclic antibiotic displaying neuroprotective properties (18-20,21)
Discovery, isolation, and structure elucidation of a family of structurally unique fermentation-derived tetracyclic macrolides, In: Baker, D.
Triterpenoid resins Triterpenoid resins consist of mixtures of triterpenoid molecules with mainly pentacyclic (ursanes, oleananes, lupanes and hopanes) and tetracyclic (dammaranes and lanostanes) skeletons.
We recorded the regular prescription of any of the following drugs at study entry: selective serotonin reuptake inhibitors (SSRIs) including fluoxetine, fluvoxamine, paroxetine, sertraline, citalopram, escitalopram; tricyclic antidepressants (TCAs) including amitriptyline, nortriptyline, imipramine, clomipramine, desipramine, doxepin, or dosulepin; serotonin and noradrenaline reuptake inhibitors (SNRIs) including venlafaxine and duloxetine; tetracyclic antidepressants including mirtazapine; and atypical antidepressants, such as trazodone.
It is characterized by long alternate bluegreen leaves which contain toxic and skin-irritant milky latex very rich in tetracyclic triterpene compounds [10].
Wu et al., "Fragmentation pathways of oxygenated tetracyclic triterpenoids and their application in the qualitative analysis of Ganoderma lucidum by multistage tandem mass spectrometry," Rapid Communications in Mass Spectrometry, vol.
GAs are plant tetracyclic diterpenoids that control various processes throughout plant development, including stem elongation (SUN, 2011).
The following keywords were used in all database searches: "antidepressants", "traumatic brain injury", "depressive disorders", "depression", "brain trauma", "brain injury", "head trauma", "head injury", "selective serotonin reuptake inhibitors", "serotonin-norepinephrine reuptake inhibitors", "serotonin modulators and stimulators", "serotonin antagonists and reuptake inhibitors", "norepinephrine reuptake inhibitors", "tricyclic antidepressants", "tetracyclic antidepressants", and "monoamine oxidase inhibitors".
Assessment of dopamine Dj receptor affinity and efficacy of three tetracyclic conformationally-restricted analogs of SKF38393.