Acid synthesis

A fragment-based approach has been applied to derive 2-(7-hydroxy-2-oxo-2H-chromen-4- yl)acetic acid 1 into 4 new coumarin derivatives 2a-d through amide bonds. The compounds were screened for their anticancer activity using MTT assay on MCF-7 and HepG2 cell lines.

10p viaburame 14-03-2025 4 0   Download

This study aims to investigate the synthesis capability of the plant growthpromoting substance indole acetic acid (IAA) by the salt-tolerant phosphate-solubilizing Pantoea sp. TTB4.1 strain and its effect on the germination ability of corn seeds immersed in bacterial suspension.

7p viinuzuka 28-02-2025 3 1   Download

This experiment aimed to synthesize isoamyl acetate and understand preparing ester’s mechanism. The test compounds underwent reflux, distillation, extraction and vacuum filtration. Through an acid, acetic acid could serve as a substrate. This could easily be attacked by isoamyl alcohol, thus producing isoamyl acetate.

4p thanhtrinhqc 23-08-2014 60 7   Download

Fatty acids are an important energy source, for they yield over twice as much energy as an equal mass of carbohydrate or protein. In humans, the primary dietary source of fatty acids is triacylglycerols. This lecture will describe the metabolism of fatty acids. The two main components of fatty acid metabolism are β oxidation and fatty acid synthesis. Upon completion of this lecture, you will understand that the fatty-acid breakdown reactions of β oxidation result in the formation of reduced cofactors and acetyl-CoA molecules, which can be further catabolized to release free energy.

64p zingzing09 21-10-2012 111 11   Download

Two enzymes control the rearrangement of carbon skeletons which result in the production of Glyceraldehyde-3-phosphate and Fructose-6-phosphate. Transketolase transfers C2 units: TPP requiring enzyme like pyruvate dehydrogenase Transaldolase transfers C3 units: uses a shiffs base with an active lysine group

44p zingzing09 21-10-2012 55 11   Download

Tham khảo bài thuyết trình 'chapter 5. lipid metabolism', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

64p zingzing09 21-10-2012 66 8   Download

Aim of the thesis: Synthesis of several derivatives and tubulysin analogues with the replacement of the amino acid methylpipecolic (Mep) at the N-terminal, replacing N,O-acetyl group by methyl group, and researching the role of tubuphenylalanine (Tup) group at the C-terminal.

26p extraenglish 24-05-2021 18 4   Download

Synthesis of several derivatives and tubulysin analogues with the replacement of the amino acid methylpipecolic (Mep) at the N-terminal, replacing N,O-acetyl group by methyl group, and researching the role of tubuphenylalanine (Tup) group at the C-terminal .

26p capheviahe27 23-02-2021 20 5   Download

The goals of the dissertation: Synthesizing deep eutectic solvents based on choline chloride with the compounds of 2-alkylbenzimidazole/ethylene glycol and determining their structures; using synthetic deep eutectic solvents to enrich and separate Omega-3,6,9 from waste fat in accordance with the facrories’ procedure of processing Vietnamese basa fish for export.

31p capheviahe27 23-02-2021 34 3   Download

Synthesis and structural analysis of hydrotalcite bearing benzothiazolylthiosuccinic acid modified by silane; study on corrosion inhibiting ability for steel of hydrotalcite bearing benzothiazolylthiosuccinic acid modified by silane.

31p capheviahe27 23-02-2021 34 7   Download

The aims of the dissertation are: Isolation and purification of the main chemical constituents of the plant Centella asiatica (L.) Urban collected from various regions in Vietnam; synthesis of new derivatives of asiatic acid and madecassic acid obtained from C. asiatica.

27p capheviahe27 23-02-2021 38 3   Download

This method is associated with some attractive characteristics such as good selectivity, very short reaction time, high yield of products, cleaner reaction profile,no harmful by-product, cheap and environmental benign catalyst, simple experimental andwork-up procedure. This procedure does not require solvent separation and purification stepssuch as column chromatography.

10p tocectocec 25-05-2020 16 4   Download

In this investigation, neodymium orthoferrite (NdFeO3) nanoparticles has been synthesized through ultrasonic method in the presence of octanoic acid as surfactant. This method comparing to the other methods is very fast and it does not need high temperatures during the reaction.

8p tocectocec 25-05-2020 6 2   Download

Pirochromite (MgCr2O4) nanoparticles were successfully prepared in this study. During synthesis of the pirochromite nanoparticles, a sol-gel was prepared by using magnesium acetate and potassium dichromate as magnesium and chromium sources and by using stearic acid as the network.

8p tocectocec 25-05-2020 11 3   Download

The study revealed that the tested compounds are moderate UVB absorbers, but could be used to augment the effect of other photoprotective agents. Their SPF values were in the range from 3.63 to 4.26 for salicylates 3a-d and from 3.03 to 3.51 for vanillates.

10p tocectocec 25-05-2020 13 3   Download

Synthesis of pyrano-chromenes and pyrano-pyrans was developed by three-component reactions of kojic acid and aromatic aldehydes with dimethone and malononitrile, catalyzed with nano-Bi2O3-ZnO and nano-ZnO, respectively.

12p tocectocec 25-05-2020 15 3   Download

A fast and facile one-pot procedure for the preparation of symmetric 5-Aryloyl-1,9-dimethyl-5,9-dihydro-2H-pyrano[2,3-d:6,5-d']dipyrimidine-2,4,6,8(1H,3H,7H)-tetraone derivatives by two-component reaction of N-methylbarbituric acid and arylglyoxalmonohydrates catalyzed by DABCO in ethanol at 50 ºC is described.

14p tocectocec 25-05-2020 15 2   Download

Pentyl 2-(1H-indole-2-carboxamido)benzoate (5) is obtained in good yield as stable crystals by reaction of pentyl 2-amino benzoate (6) with indole-2-carbonyl chloride acid (7) in the presence of pyridine. The crystal structure of 5 confirms the presence of intramolecular hydrogen bonding (N-H…O) which produces a six-membered ring, and the molecules are linked together by intermolecular hydrogen forces (N-H…O).

6p tocectocec 25-05-2020 9 1   Download

An environmentally benign aqueous protocol for the synthesis of novel 2-((5-(4-methoxybenzylidene)-4-oxo-4,5-dihydrothiazol-2-yl)amino)substituted acid by using potassium carbonate as a base has been achieved.

14p tocectocec 25-05-2020 11 0   Download

A total synthesis of cyclodepsipeptide [Leu]6-aureobasidin K using combination of solid- and solution-phase

6p tocectocec 25-05-2020 21 1   Download