Examples of 'objective compound' in a sentence
Meaning of "objective compound"
objective compound - This phrase is used in the context of chemistry to describe a compound that consists of two or more elements combined in a fixed ratio. It implies that the compound is formed through a chemical reaction and has a specific chemical composition
How to use "objective compound" in a sentence
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objective compound
An objective compound can be isolated by column chromatography.
The residue was purified by chromatography to give the objective compound.
The objective compound can be synthesized according to the method.
The precipitated crystal was collected by filtration and dried to give the objective compound.
The fractions including the objective compound were collected and concentrated.
The objective compound can be isolated by a conventional method such as extraction and crystallization.
Alternatively, reductive amination can also produce the objective compound.
This reaction gives an objective compound only by using polyhydric phenols.
Then, the solvent is distilled off to give the objective compound.
The purity of the objective compound was confirmed by HPLC under the following conditions.
As to an amine, a suitable amine can be appropriately selected depending on the objective compound.
The solution containing the objective compound was purified by preparative HPLC utilizing ODS column.
After cooling, the precipitated crystals were collected by filtration to give the objective compound.
Thus, the objective compound can be obtained.
However, the aforementioned methods are unsatisfactory in terms of the yield of the objective compound.
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Thus, the objective compound can be efficiently separated in high purity.
Further, catalytic reduction was carried out using palladium / carbon to obtain an objective compound.
Therefore, the objective compound can be efficiently separated in high purity.
The resulting crude product was solidified with hexane to give 47 g of the objective compound.
By cooling the filtrate, the objective compound can satisfactorily be isolated by crystallization.
The isolate is recrystallized from ethyl acetate / diethyl ether to give the objective compound.
Then, the objective compound is eluted from the anion exchange resin with a suitable eluent.
By subjecting the thus obtained residue to purification treatment, the objective compound can be obtained.
The properties of the objective compound are shown in Table 5.
Removal of the amino-protecting group under suitable conditions gives the objective compound.
The production methods of the objective compound ( I ) are explained in detail in the following.
Then, post-treatment and purification were carried out in a usual way to obtain an objective compound.
The process for producing the objective compound ( I ) is now described in detail.
This compound is then deprotected under suitable conditions to provide the objective compound ( Second Step ).
Thus an objective compound ( XV ) can be obtained.
The aqueous solution obtained was freeze-dried to give the objective compound as a white cotton-like solid.
The objective compound ( I ) of the invention can be represented by the formula,.
The process for production of the objective compound ( I ) is now described in detail.
The crystals were recrystallized from ethanol to give 1.5 g of the objective compound.
When R ⁸ is other than hydrogen, the objective compound ( IIa ) is obtained by conventional hydrolysis.
This configuration is maintained until the objective compound [ 1ʹ ].
Recrystallization of the objective compound ( 2 ) was done alone from methanol-isopropanol, colorless needles, m . p.
The precipitated crystals were taken by filtration to give 1.5 g of the objective compound.
In the same manner as in Example 5, the objective compound was prepared from 3-methoxydiphenyl ether.
The crude residue was purified by silicagel column chromatography to give 0.25 g of the objective compound.
In accordance with this invention, the objective compound ( I ) can be produced by the following processes.
The obtained crude product was recrystallized from isopropanol to give 0.9 g of the objective compound.
After washing with water, 0.7 g of the objective compound was obtained as white solid.
The precipitate thus formed was filtered out to thereby give 6.50 g of the objective compound.
An objective compound was eluted with a mixed solvent ( n-hexane / ethyl acetate or chloroform / methanol ).
By drying with heating under reduced pressure, 40 g of the objective compound was obtained.
By this procedure, the objective compound DCE-GS ( or a salt thereof ) is produced.
The crude product obtained was recrystallized from isopropyl ether to give 0.4 g of the objective compound.
The objective Compound [ I-b ] can be also prepared, for example, as follows.
The resulting crude product was solidified with diethyl ether to give 3.1 g of the objective compound.
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