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 .
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 .
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.