"' Ciclopramine "'is a tetracyclic antidepressant ( TeCA ) that was never marketed.
12.
The disilene isomerizes to a tetracyclic compound by heating at 110�C in xylene thereby releasing its strain energy.
13.
In prokaryotes, biosynthetic pathways exist for the tetracyclic steroid framework ( e . g . in hopanoid framework.
14.
The gonane ( steroid nucleus ) is the parent 17-carbon tetracyclic hydrocarbon molecule with no alkyl sidechains.
15.
Tetracyclic antidepressants ( TeCAs ), which contain four rings of atoms, are a closely related group of antidepressant compounds.
16.
However, ring E formation is hindered by an entropic barrier, which may explain its absence in the tetracyclic steroids.
17.
It was chemically derived via altering the chemical structure of the tetracyclic ( " atypical " ) antidepressant, mianserin.
18.
Andrew Myers'2005 synthesis of (-)-tetracycline achieved the linear tetracyclic core of the antibiotic with a Diels Alder reaction.
19.
"' Aphidicolin "'is a tetracyclic diterpene antibiotic isolated from the fungus, " Cephalosporum aphidicola " with antiviral and antimitotic properties.
20.
In acidic solution, the sulfenic acid is isolated before reaction with one or more cysteines accessible from the luminar surface of the enzyme, a tetracyclic sulfenamide.
