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Carboxylic Acid - Springer Nature

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Last Updated: 10 September 2022

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Ternary catalytic α-deuteration of carboxylic acids

Although u03b1-deutero carboxylic acids are common structural components that are used as a variety of synthons and are therefore in high demand, a variety of synthons are still in production, u03b1-selective and mild methods for carboxylic acid deuteration have remained unexplored, although epoxy acid deuteration of carboxylic acids have remained unexplored. The procedure was applied to the creation of a deuterated EP3 receptor antagonist deuterate, with the deutero analogue displaying improved metabolic stability in human microsomes relative to the proto compound. Now, the u03b1-deuteration of carboxylic acids has been achieved under mild conditions using a ternary catalyst system of K_2CO_3, pivalic anhydride, and 4-dimethylaminopyridine.

Source link: https://doi.org/10.1038/s44160-022-00139-9


Synthesis and Structure of a Host-Guest Inclusion System Between C-iso-butyl-calix[4]methyl-resorcinarene and 1-propyl-pyrrolidine-2-carboxylic acid

Complex 3 crystallizes in the monoclinic space group P 2_1, with a = 12. 319 u00b0, b = 90 000 b0, u00b0 = 90u00b0, u00c5, b = 42. 900 0f, u00b0 = 90 00b0, u00b0 = 90 b0, b = 90. 998 % 00b0, o = 90 u00b1 00c5 b3 u00c5 u00b1 00b1 u00b0 b1 u00b0 00b0 00b0, u00b0 u00c5 00c5, 00b0 u00b0 b0, 00b0 00b0, 00c5u00b0, b0, 00b0, b1 u00c In complex 3, the resorcinarene cavitands are embedded within Amino acid molecules via intermolecular Ou2012Hu22efO hydrogen bonding.

Source link: https://doi.org/10.1007/s10870-022-00924-6


Dissolution and degradation of cellulosic fiber in carboxylic acid choline chloride-based deep eutectic solvents

Brushed chemical pulp from hardwood was treated with different carboxylic acid, acetic acid, ethanedioic acid, propanedioic acid, and choline chloride in this research. The dissolution and degradation of cellulose and hemicellulose in chemical pulps in these DESs were investigated, as well as the interactions between the polarity parameters of DESs and cell degradation and dissolution of cellulosic fibers. Dicarboxylic acids/ChCl were more effective at cellular solubility and degradation at a higher temperature than monocarboxylic acids/ChCl.

Source link: https://doi.org/10.1007/s00226-022-01406-w


Overexpression of acdS gene encoding 1-aminocyclopropane-1-carboxylic acid deaminase enzyme in petunia negatively affects seed germination

Generally, overexpression of acdS in petunia negatively affects seed germination by lowering ethylene biosynthesis and signaling genes and the introduction of abscisic acid biosynthesis genes in the seeds. acdS overexpression in this research dramatically reduced seed weight and germination rate in transgenic petunia cv. T7's germination rate was significantly lower than those of T5 and T12, which was attributed to more acdS in the former than the latter. The addition of exogenous ACC and gibberellic acid to the germination medium raised the germination rate of T5 seeds and GA_3 as well as the germination rate of T12 seeds. The increased germination rates in T5 and T12 were attributed to transcriptional control of ethylene biosynthesis genes, particularly those of the ACO1 gene, signaling genes, and ABA biosynthesis genes. AcdS played a negative role in seed germination in petunia in this research.

Source link: https://doi.org/10.1007/s00299-022-02916-4

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions