Awesome and Easy Science Experiments about 21461-84-7

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Computed Properties of C5H6O4, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 21461-84-7, in my other articles.

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Computed Properties of C5H6O4, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 21461-84-7, Name is (S)-( )-5-Oxo-2-tetrahydrofurancarboxylic Acid, molecular formula is C5H6O4

Stereochemical elucidation of streptorubin B

Streptorubin B is a structurally remarkable mem-ber of the prodiginine group of antibiotics produced by several actinobacteria, including the model organism Streptomyces coelicolor A3(2). Transannular strain within the pyrrolophane structure of this molecule causes restricted rotation that gives rise to the possibility of (diastereomeric) atropisomers. Neither the relative nor the absolute stereochemistry of streptorubin B is known. NOESY NMR experiments were used to define the relative stereochemistry of the major atropisomer of streptorubin BHCl in solution as anti. We exploited this finding together with our knowledge of streptorubin B biosynthesis in S. coelicolor to determine the absolute stereochemistry of the anti atropisomer. 2-Undecylpyrrole stereoselectively labeled with deuterium at C-4? was synthesized and fed to a mutant of S. coelicolor, which was unable to produce streptorubin B because it was blocked in 2-undecylpyrrole biosynthesis, and in which the genes responsible for the last two steps of streptorubin B biosynthesis were overexpressed. 1H and 2H NMR analysis of the stereoselectively deuterium-labeled streptorubin BHCl produced by this mutasynthesis strategy allowed us to assign the absolute stereochemistry of the major (anti) atropisomer as 7?S. HPLC analyses of streptorubin B isolated from S. coelicolor on a homochiral stationary phase and comparisons with streptorubin B derived from an enantioselective synthesis showed that the natural product consists of an approximately 88:7:5 mixture of the (7?S, anti), (7?S, syn), and (7?R, anti) stereoisomers.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Computed Properties of C5H6O4, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 21461-84-7, in my other articles.

Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem