Examples of 'five-membered' in a sentence
Meaning of "five-membered"
Five-membered: In chemistry, describes a cyclic structure with five atoms in the ring, commonly found in organic compounds.
How to use "five-membered" in a sentence
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five-membered
Five-membered heterocycles useful as serine protease inhibitors.
A pentasil unit consists of eight five-membered rings.
Most preferred five-membered heteroaromatic ring is thiazolyl.
Chelation results in the formation of a five-membered ring.
The five-membered ring contains two double bonds.
It can be inferred from the five-membered ring transition state.
Five-membered carbon rings are ubiquitous structural motifs in natural products.
Spirocyclic compounds incorporating five-membered rings with two heteroatoms.
Five-membered heterocycles are widely present in nature and in drugs.
This example breaks and then forms a five-membered ring.
Two five-membered structural isomers of the glycine derivative are inactive.
Such is perhaps not true for the five-membered heterocycles.
Ar is preferably a five-membered aromatic group that is either substituted or unsubstituted.
Pyrrole is another compound made up of molecules with a five-membered heterocyclic ring.
The strain of five-membered rings increased with a decrease degree of unsaturation.
See also
Atranes are a class of tricyclic molecules with three five-membered rings.
Consisting of a planar five-membered ring, it is aromatic as indicated by its extensive substitution.
The argon atom is located above the middle five-membered ring.
Is five-membered heteroaryl optionally substituted with one or more methyl substituents ;.
Phenytoin is related to the barbiturates in chemical structure, but has a five-membered ring.
The five-membered intermediate formed is then hydrolyzed to form a phosphoramidic acid.
The central part of the molecule consists of two fused five-membered rings.
It contains a five-membered ring consisting of four carbon atoms and a sulfur atom.
Pesticidally active polycyclic derivatives with sulfur substituted five-membered ring heterocycles.
It consists of a five-membered ring containing four carbon atoms and a sulfur atom.
The configurational isomers of the title compounds consist of four fused five-membered rings.
Thus, a five-membered ring has a significant stabilizing effect on a pentacoordinated phosphorus structure.
The characteristics of the lupane skeleton are the five-membered ring and the isopropylidene group.
The five-membered heteroaryl derivatives of the present invention have not been described.
Unlike the monoglycerol acetals, these materials can exist only in a five-membered ring form.
Exemplary of these five-membered heteroaromatic ring moieties are furane, pyrrole and thiophene.
Reactivity studies confirm that seven-membered ring is electrophilic and the five-membered ring is nucleophilic.
Other ethers with five-membered ring structures have not been examined so far.
The purines have a double ring structure with a six-membered ring fused to a five-membered ring.
It consists of three five-membered rings fused across three of the five carbon atoms.
The anion binds to metal cations through the two oxygen atoms, forming five-membered chelate rings.
As with other triazoles, it has five-membered ring structures containing three nitrogen atoms.
Five-membered heterocycles have many important applications, making new synthetic techniques of great significance.
Simple monocyclic aromatic rings are usually five-membered rings like pyrrole or six-membered rings like pyridine.
The five-membered ring was not conformationally mobile and was locked in one envelope conformation.
Introducing a double bond in the five-membered ring to yield a compound of formula XV.
In a further embodiment, the heterocyclic ring of which Q is the residue is a five-membered heterocyclic ring.
Preferred heterocycles include five-membered unsaturated heterocycles such as triazolyl, pyrazolyl and imidazolyl.
In one embodiment, M represents the residue of an optionally substituted saturated five-membered monocyclic ring.
Oxazoline is a five-membered heterocyclic chemical compound containing one atom each of oxygen and nitrogen.
Particular embodiments of polycyclic alkaloids having a five-membered aromatic ring B have the following structures.
Pyrazoles are five-membered nitrogen containing heterocycles, whose derivatives can be widely used in medicinal chemistry.
The molecule has a typical diphenylboron hydroxamate structure featuring a five-membered COBON chelate ring.
The molecule features a five-membered BO2CN ring which lies in the crystallographic mirror plane.
Particular embodiments concern the synthesis of polycyclic alkaloids having a fused five-membered aromatic ring B.
