We describe the practical synthetic route for (2S)-7-methoxy-1,2,3,4-tetrahydro-2-naphthylamine 1(2S)-2-amino-7-methoxytetraline; (S)-AMT]. (2R)-2-(3-Methoxybenzyl)succinic acid [(R)-1] was obtained by the optical resolution of 2-(3-methoxybenzyl)succinic acid (1) as the salt of (1R,2S)-2-(benzylamino)cyclohexylmethanol (7), and (R)-1 was converted to the optically active (2S)-7-methoxy-1,2,3,4...

Researches were conducted in 2019-2020 the department of closed artificial agroecosystems for plant growing on basis Federal State Budgetary Scientific Institution “Federal Agroengineering Center VIM”, Moscow. The object study was seeds tomatoes Solanum lycopersicum L. aim research to effect a biostimulant (succinic acid) biological characteristics and productivity grown substrate hydroponics c...

A new, highly enantio- and diastereoselective catalytic asymmetric formal cycloaddition of aryl succinic anhydrides and aldehydes which generates paraconic acid (γ-butyrolactone) derivatives is reported.

The accumulation of lactic acid in tumor tissue (15) suggests an inadequacy in the oxidative mechanism. A deficiency of one of the components of the oxidative mechanism, cytochrome c, was demonstrated in the first paper of this series (6). The present article reports the decreased activities of succinic dehydrogenase and of cytochrome oxidase in tumor tissues. These enzymes together with cytoch...

A strain of Pseudomonas Jluorescens (ATCC 13430) was isolated which could utilize either pyrrolidine or putrescine as the sole source of carbon, nitrogen, and energy for growth. An investigation of the metabolism of pyrrolidine by this organism (1) suggested Al-pyrroline (I) as the first product of pyrrolidine catabolism followed by y-aminobutyric acid (III). Enzymes which were induced by growt...

Although succinic acid is known to be widely distributed in plant tissues there is only a limited amount of quantitative data on its occurrence. Studies which have been made of the changes in concentration of succinic acid during development of the tobacco plant indicate that it is to be regarded as one of the more active metabolites (4). In a previous study of the organic acids of the cotton p...

The fundamental investigations of Virtanen (1923, 1925), Virtanen and Karstrom (1931), and van Niel (1928) on the mechanism of glucose dissimilation by the propionic acid bacteria have led to the proposal that glucose after preliminary phosphorylation is converted into 2 molecules of the C) type. Virtanen upon theoretical considerations concludes that lactic acid is an intermediate product of t...

Lipase-catalyzed transesterification of racemic 4-substituted 4-hydroxybutyramides with succinic anhydride proceeded enantioselectively to afford (S)-succinic acid monoester and unreacted (R)-4-hydroxybutyramide derivative, which were separated easily by treatment with an alkaline solution. Both enantiomers were converted easily to optically active gamma-substituted gamma-butyrolactones.

Condensation and evaporation modify the properties and effects of atmospheric aerosol particles. We studied the evaporation of aqueous succinic acid and succinic acid/ammonium sulfate droplets to obtain insights on the effect of ammonium sulfate on the gas/particle partitioning of atmospheric organic acids. Droplet evaporation in a laminar flow tube was measured in a Tandem Differential Mobilit...