Examples of 'lactone ring' in a sentence
Meaning of "lactone ring"
lactone ring: A lactone ring is a cyclic ester compound formed by the intramolecular reaction between a hydroxyl group and a carboxylic acid group. Lactone rings are commonly found in various organic compounds and play a role in the structure and function of many natural products and pharmaceuticals
How to use "lactone ring" in a sentence
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lactone ring
The cycloalkyl can be condensed with a lactone ring.
The lactone ring is unstable and opens in basic media.
Aliphatic polyesters obtained by opening of a lactone ring are also suitable.
Triptolide lactone ring derivatives as immunomodulators and anticancer agents.
An aliquot of the reaction was acidulated to verify recovery of the lactone ring.
The pharmacokinetics of this inactive open lactone ring form of eplerenone was also evaluated.
Acidic conditions generally cause the regeneration of the lactone ring.
The lactone ring in CPT is highly susceptible to hydrolysis.
Macrolide antibiotics are classified according to the size of the macrocyclic lactone ring.
Examples of monomers that contain such a lactone ring are e-caprolactone, pivalolactone, enantholactone and caprylolactone.
These findings further confirmed the importance of the intact lactone ring.
Three amine substituents at the macrocyclic lactone ring result in a tri-basic character of the molecule.
The drug is selected from paclitaxel and a drug containing a macrocyclic lactone ring.
The lactone ring closure is checked by thin layer chromatographic analysis ( TLC ).
A characteristic of bufadienolides is that they all contain two double bonds in the lactone ring.
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These results indicate that intact lactone ring E and a-hydroxyl group are essential for antitumor activity.
The lactone compounds can be reacted with a nucleophilic agent to open the lactone ring.
The lactone ring of sweroside tetraacetate ( 2b ) was opened by trimethylsilyl iodide.
The modification results from an esterification reaction taking place by opening the lactone ring.
Azithromycin has a 15-member lactone ring and a nitrogen substitution.
Each dye molecule in Zubbles is a structure known as a lactone ring.
The lactone ring may be seven-membered instead of six-membered.
These findings further confirmed the importance of the intact lactone ring to biological activity.
However, subjecting the lactone ring to air, water, or pressure causes the ring to open.
Surprisingly, substantially no reaction takes place at the lactone ring.
The lactone ring may be seven-membered instead of six-membered . Name.
The nanoparticles comprise a drug, selected from paclitaxel and a drug containing a macrocyclic lactone ring.
The preferred lactone ring is a B unsaturated 5-membered ring substituted at the B-position.
Likewise, a Tyr and a Glu or a Tyr and a Asp are capable of forming a lactone ring.
Preparation of 1,3-Oxathiolane Lactone Ring Figure 1 illustrates one route for carrying out the disclosed process.
Roxithromycin is derived from erythromycin, containing the same 14-membered lactone ring.
Polymerization which opens the lactone ring is described in, for example, literature reference ( 8 ).
Roxithromycin comes from erythromycin, and because of this it contains a similar 14 membered lactone ring.
The lactone ring is opened with alkali to form a carboxylic acid which, on esterification, gives ( 47 ).
However, an N-oxime side chain is attached to the lactone ring.
In the third step, the lactone ring is formed by a cytochrome P450 enzyme using NADP+.
Oxidizing the a, B-unsaturated lactone ring of digitoxigenin 3-acetate A to obtain the keto derivative B ;.
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Examples of using Lactone
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The lactone is a versatile intermediate in organic synthesis
Commercially available lactone monomers may be used
The lactone is purified by silica column chromatography
Examples of using Ring
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And place a ring upon her hand
Ring tones will not hold up in court
I had to go into the ring to finish it myself
